M: Cornelia Huck <cohuck@redhat.com>
M: Christian Borntraeger <borntraeger@de.ibm.com>
S: Supported
-F: target/s390x/kvm.c
-F: target/s390x/kvm_s390x.h
+F: target/s390x/kvm/
F: target/s390x/ioinst.[ch]
F: target/s390x/machine.c
F: target/s390x/sigp.c
*/
#include "qemu/osdep.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include <sys/ioctl.h>
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/error-report.h"
#include "sysemu/kvm.h"
#include "exec/ram_addr.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
Object *kvm_s390_stattrib_create(void)
{
#include "qemu/module.h"
#include "sysemu/runstate.h"
#include "hw/s390x/tod.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
static void kvm_s390_get_tod_raw(S390TOD *tod, Error **errp)
{
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "migration/vmstate.h"
#include "hw/qdev-properties.h"
#include "hw/s390x/ap-bridge.h"
'target/ppc',
'target/riscv',
'target/s390x',
+ 'target/s390x/kvm',
'target/sparc',
]
endif
#include "qapi/error.h"
#include "cpu.h"
#include "s390x-internal.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "sysemu/kvm.h"
#include "sysemu/reset.h"
#include "qemu/timer.h"
#include "qapi/error.h"
#include "cpu.h"
#include "s390x-internal.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "sysemu/kvm.h"
#include "sysemu/reset.h"
#include "qemu/module.h"
#include "qemu/osdep.h"
#include "cpu.h"
#include "s390x-internal.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "sysemu/kvm.h"
#include "sysemu/tcg.h"
#include "qapi/error.h"
#include "hw/s390x/s390-virtio-ccw.h"
#include "hw/s390x/pv.h"
#include "sysemu/kvm.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3)
{
#include "qemu/osdep.h"
#include "cpu.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "s390x-internal.h"
#include "exec/exec-all.h"
#include "sysemu/kvm.h"
+++ /dev/null
-/*
- * QEMU S390x KVM implementation
- *
- * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
- * Copyright IBM Corp. 2012
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include <sys/ioctl.h>
-
-#include <linux/kvm.h>
-#include <asm/ptrace.h>
-
-#include "qemu-common.h"
-#include "cpu.h"
-#include "s390x-internal.h"
-#include "kvm_s390x.h"
-#include "sysemu/kvm_int.h"
-#include "qemu/cutils.h"
-#include "qapi/error.h"
-#include "qemu/error-report.h"
-#include "qemu/timer.h"
-#include "qemu/units.h"
-#include "qemu/main-loop.h"
-#include "qemu/mmap-alloc.h"
-#include "qemu/log.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/hw_accel.h"
-#include "sysemu/runstate.h"
-#include "sysemu/device_tree.h"
-#include "exec/gdbstub.h"
-#include "exec/ram_addr.h"
-#include "trace.h"
-#include "hw/s390x/s390-pci-inst.h"
-#include "hw/s390x/s390-pci-bus.h"
-#include "hw/s390x/ipl.h"
-#include "hw/s390x/ebcdic.h"
-#include "exec/memattrs.h"
-#include "hw/s390x/s390-virtio-ccw.h"
-#include "hw/s390x/s390-virtio-hcall.h"
-#include "hw/s390x/pv.h"
-
-#ifndef DEBUG_KVM
-#define DEBUG_KVM 0
-#endif
-
-#define DPRINTF(fmt, ...) do { \
- if (DEBUG_KVM) { \
- fprintf(stderr, fmt, ## __VA_ARGS__); \
- } \
-} while (0)
-
-#define kvm_vm_check_mem_attr(s, attr) \
- kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
-
-#define IPA0_DIAG 0x8300
-#define IPA0_SIGP 0xae00
-#define IPA0_B2 0xb200
-#define IPA0_B9 0xb900
-#define IPA0_EB 0xeb00
-#define IPA0_E3 0xe300
-
-#define PRIV_B2_SCLP_CALL 0x20
-#define PRIV_B2_CSCH 0x30
-#define PRIV_B2_HSCH 0x31
-#define PRIV_B2_MSCH 0x32
-#define PRIV_B2_SSCH 0x33
-#define PRIV_B2_STSCH 0x34
-#define PRIV_B2_TSCH 0x35
-#define PRIV_B2_TPI 0x36
-#define PRIV_B2_SAL 0x37
-#define PRIV_B2_RSCH 0x38
-#define PRIV_B2_STCRW 0x39
-#define PRIV_B2_STCPS 0x3a
-#define PRIV_B2_RCHP 0x3b
-#define PRIV_B2_SCHM 0x3c
-#define PRIV_B2_CHSC 0x5f
-#define PRIV_B2_SIGA 0x74
-#define PRIV_B2_XSCH 0x76
-
-#define PRIV_EB_SQBS 0x8a
-#define PRIV_EB_PCISTB 0xd0
-#define PRIV_EB_SIC 0xd1
-
-#define PRIV_B9_EQBS 0x9c
-#define PRIV_B9_CLP 0xa0
-#define PRIV_B9_PCISTG 0xd0
-#define PRIV_B9_PCILG 0xd2
-#define PRIV_B9_RPCIT 0xd3
-
-#define PRIV_E3_MPCIFC 0xd0
-#define PRIV_E3_STPCIFC 0xd4
-
-#define DIAG_TIMEREVENT 0x288
-#define DIAG_IPL 0x308
-#define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
-#define DIAG_KVM_HYPERCALL 0x500
-#define DIAG_KVM_BREAKPOINT 0x501
-
-#define ICPT_INSTRUCTION 0x04
-#define ICPT_PROGRAM 0x08
-#define ICPT_EXT_INT 0x14
-#define ICPT_WAITPSW 0x1c
-#define ICPT_SOFT_INTERCEPT 0x24
-#define ICPT_CPU_STOP 0x28
-#define ICPT_OPEREXC 0x2c
-#define ICPT_IO 0x40
-#define ICPT_PV_INSTR 0x68
-#define ICPT_PV_INSTR_NOTIFICATION 0x6c
-
-#define NR_LOCAL_IRQS 32
-/*
- * Needs to be big enough to contain max_cpus emergency signals
- * and in addition NR_LOCAL_IRQS interrupts
- */
-#define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
- (max_cpus + NR_LOCAL_IRQS))
-/*
- * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
- * as the dirty bitmap must be managed by bitops that take an int as
- * position indicator. This would end at an unaligned address
- * (0x7fffff00000). As future variants might provide larger pages
- * and to make all addresses properly aligned, let us split at 4TB.
- */
-#define KVM_SLOT_MAX_BYTES (4UL * TiB)
-
-static CPUWatchpoint hw_watchpoint;
-/*
- * We don't use a list because this structure is also used to transmit the
- * hardware breakpoints to the kernel.
- */
-static struct kvm_hw_breakpoint *hw_breakpoints;
-static int nb_hw_breakpoints;
-
-const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
- KVM_CAP_LAST_INFO
-};
-
-static int cap_sync_regs;
-static int cap_async_pf;
-static int cap_mem_op;
-static int cap_s390_irq;
-static int cap_ri;
-static int cap_hpage_1m;
-static int cap_vcpu_resets;
-static int cap_protected;
-
-static int active_cmma;
-
-static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
-{
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
- .addr = (uint64_t) memory_limit,
- };
-
- return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit)
-{
- int rc;
-
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
- .addr = (uint64_t) &new_limit,
- };
-
- if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
- return 0;
- }
-
- rc = kvm_s390_query_mem_limit(hw_limit);
- if (rc) {
- return rc;
- } else if (*hw_limit < new_limit) {
- return -E2BIG;
- }
-
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_cmma_active(void)
-{
- return active_cmma;
-}
-
-static bool kvm_s390_cmma_available(void)
-{
- static bool initialized, value;
-
- if (!initialized) {
- initialized = true;
- value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
- kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
- }
- return value;
-}
-
-void kvm_s390_cmma_reset(void)
-{
- int rc;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_CLR_CMMA,
- };
-
- if (!kvm_s390_cmma_active()) {
- return;
- }
-
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- trace_kvm_clear_cmma(rc);
-}
-
-static void kvm_s390_enable_cmma(void)
-{
- int rc;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
- };
-
- if (cap_hpage_1m) {
- warn_report("CMM will not be enabled because it is not "
- "compatible with huge memory backings.");
- return;
- }
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- active_cmma = !rc;
- trace_kvm_enable_cmma(rc);
-}
-
-static void kvm_s390_set_attr(uint64_t attr)
-{
- struct kvm_device_attr attribute = {
- .group = KVM_S390_VM_CRYPTO,
- .attr = attr,
- };
-
- int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
-
- if (ret) {
- error_report("Failed to set crypto device attribute %lu: %s",
- attr, strerror(-ret));
- }
-}
-
-static void kvm_s390_init_aes_kw(void)
-{
- uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
-
- if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
- NULL)) {
- attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
- }
-
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
- kvm_s390_set_attr(attr);
- }
-}
-
-static void kvm_s390_init_dea_kw(void)
-{
- uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
-
- if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
- NULL)) {
- attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
- }
-
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
- kvm_s390_set_attr(attr);
- }
-}
-
-void kvm_s390_crypto_reset(void)
-{
- if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
- kvm_s390_init_aes_kw();
- kvm_s390_init_dea_kw();
- }
-}
-
-void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp)
-{
- if (pagesize == 4 * KiB) {
- return;
- }
-
- if (!hpage_1m_allowed()) {
- error_setg(errp, "This QEMU machine does not support huge page "
- "mappings");
- return;
- }
-
- if (pagesize != 1 * MiB) {
- error_setg(errp, "Memory backing with 2G pages was specified, "
- "but KVM does not support this memory backing");
- return;
- }
-
- if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_HPAGE_1M, 0)) {
- error_setg(errp, "Memory backing with 1M pages was specified, "
- "but KVM does not support this memory backing");
- return;
- }
-
- cap_hpage_1m = 1;
-}
-
-int kvm_s390_get_hpage_1m(void)
-{
- return cap_hpage_1m;
-}
-
-static void ccw_machine_class_foreach(ObjectClass *oc, void *opaque)
-{
- MachineClass *mc = MACHINE_CLASS(oc);
-
- mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
-}
-
-int kvm_arch_init(MachineState *ms, KVMState *s)
-{
- object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE,
- false, NULL);
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
- error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
- "please use kernel 3.15 or newer");
- return -1;
- }
- if (!kvm_check_extension(s, KVM_CAP_S390_COW)) {
- error_report("KVM is missing capability KVM_CAP_S390_COW - "
- "unsupported environment");
- return -1;
- }
-
- cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
- cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
- cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
- cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
- cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS);
- cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
-
- kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
- kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
- kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
- if (ri_allowed()) {
- if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
- cap_ri = 1;
- }
- }
- if (cpu_model_allowed()) {
- kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0);
- }
-
- /*
- * The migration interface for ais was introduced with kernel 4.13
- * but the capability itself had been active since 4.12. As migration
- * support is considered necessary, we only try to enable this for
- * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
- */
- if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
- kvm_check_extension(s, KVM_CAP_S390_AIS_MIGRATION)) {
- kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0);
- }
-
- kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES);
- return 0;
-}
-
-int kvm_arch_irqchip_create(KVMState *s)
-{
- return 0;
-}
-
-unsigned long kvm_arch_vcpu_id(CPUState *cpu)
-{
- return cpu->cpu_index;
-}
-
-int kvm_arch_init_vcpu(CPUState *cs)
-{
- unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
- S390CPU *cpu = S390_CPU(cs);
- kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
- cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus));
- return 0;
-}
-
-int kvm_arch_destroy_vcpu(CPUState *cs)
-{
- S390CPU *cpu = S390_CPU(cs);
-
- g_free(cpu->irqstate);
- cpu->irqstate = NULL;
-
- return 0;
-}
-
-static void kvm_s390_reset_vcpu(S390CPU *cpu, unsigned long type)
-{
- CPUState *cs = CPU(cpu);
-
- /*
- * The reset call is needed here to reset in-kernel vcpu data that
- * we can't access directly from QEMU (i.e. with older kernels
- * which don't support sync_regs/ONE_REG). Before this ioctl
- * cpu_synchronize_state() is called in common kvm code
- * (kvm-all).
- */
- if (kvm_vcpu_ioctl(cs, type)) {
- error_report("CPU reset failed on CPU %i type %lx",
- cs->cpu_index, type);
- }
-}
-
-void kvm_s390_reset_vcpu_initial(S390CPU *cpu)
-{
- kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
-}
-
-void kvm_s390_reset_vcpu_clear(S390CPU *cpu)
-{
- if (cap_vcpu_resets) {
- kvm_s390_reset_vcpu(cpu, KVM_S390_CLEAR_RESET);
- } else {
- kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
- }
-}
-
-void kvm_s390_reset_vcpu_normal(S390CPU *cpu)
-{
- if (cap_vcpu_resets) {
- kvm_s390_reset_vcpu(cpu, KVM_S390_NORMAL_RESET);
- }
-}
-
-static int can_sync_regs(CPUState *cs, int regs)
-{
- return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
-}
-
-int kvm_arch_put_registers(CPUState *cs, int level)
-{
- S390CPU *cpu = S390_CPU(cs);
- CPUS390XState *env = &cpu->env;
- struct kvm_sregs sregs;
- struct kvm_regs regs;
- struct kvm_fpu fpu = {};
- int r;
- int i;
-
- /* always save the PSW and the GPRS*/
- cs->kvm_run->psw_addr = env->psw.addr;
- cs->kvm_run->psw_mask = env->psw.mask;
-
- if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
- for (i = 0; i < 16; i++) {
- cs->kvm_run->s.regs.gprs[i] = env->regs[i];
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
- }
- } else {
- for (i = 0; i < 16; i++) {
- regs.gprs[i] = env->regs[i];
- }
- r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
- if (r < 0) {
- return r;
- }
- }
-
- if (can_sync_regs(cs, KVM_SYNC_VRS)) {
- for (i = 0; i < 32; i++) {
- cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0];
- cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1];
- }
- cs->kvm_run->s.regs.fpc = env->fpc;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
- } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
- for (i = 0; i < 16; i++) {
- cs->kvm_run->s.regs.fprs[i] = *get_freg(env, i);
- }
- cs->kvm_run->s.regs.fpc = env->fpc;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
- } else {
- /* Floating point */
- for (i = 0; i < 16; i++) {
- fpu.fprs[i] = *get_freg(env, i);
- }
- fpu.fpc = env->fpc;
-
- r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
- if (r < 0) {
- return r;
- }
- }
-
- /* Do we need to save more than that? */
- if (level == KVM_PUT_RUNTIME_STATE) {
- return 0;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
- cs->kvm_run->s.regs.cputm = env->cputm;
- cs->kvm_run->s.regs.ckc = env->ckc;
- cs->kvm_run->s.regs.todpr = env->todpr;
- cs->kvm_run->s.regs.gbea = env->gbea;
- cs->kvm_run->s.regs.pp = env->pp;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
- } else {
- /*
- * These ONE_REGS are not protected by a capability. As they are only
- * necessary for migration we just trace a possible error, but don't
- * return with an error return code.
- */
- kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
- kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
- kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
- kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
- kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
- memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
- }
-
- /* pfault parameters */
- if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
- cs->kvm_run->s.regs.pft = env->pfault_token;
- cs->kvm_run->s.regs.pfs = env->pfault_select;
- cs->kvm_run->s.regs.pfc = env->pfault_compare;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
- } else if (cap_async_pf) {
- r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
- if (r < 0) {
- return r;
- }
- r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
- if (r < 0) {
- return r;
- }
- r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
- if (r < 0) {
- return r;
- }
- }
-
- /* access registers and control registers*/
- if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
- for (i = 0; i < 16; i++) {
- cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
- cs->kvm_run->s.regs.crs[i] = env->cregs[i];
- }
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
- } else {
- for (i = 0; i < 16; i++) {
- sregs.acrs[i] = env->aregs[i];
- sregs.crs[i] = env->cregs[i];
- }
- r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
- if (r < 0) {
- return r;
- }
- }
-
- if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
- memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
- cs->kvm_run->s.regs.bpbc = env->bpbc;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
- cs->kvm_run->s.regs.etoken = env->etoken;
- cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
- cs->kvm_run->s.regs.diag318 = env->diag318_info;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
- }
-
- /* Finally the prefix */
- if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
- cs->kvm_run->s.regs.prefix = env->psa;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
- } else {
- /* prefix is only supported via sync regs */
- }
- return 0;
-}
-
-int kvm_arch_get_registers(CPUState *cs)
-{
- S390CPU *cpu = S390_CPU(cs);
- CPUS390XState *env = &cpu->env;
- struct kvm_sregs sregs;
- struct kvm_regs regs;
- struct kvm_fpu fpu;
- int i, r;
-
- /* get the PSW */
- env->psw.addr = cs->kvm_run->psw_addr;
- env->psw.mask = cs->kvm_run->psw_mask;
-
- /* the GPRS */
- if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
- for (i = 0; i < 16; i++) {
- env->regs[i] = cs->kvm_run->s.regs.gprs[i];
- }
- } else {
- r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
- if (r < 0) {
- return r;
- }
- for (i = 0; i < 16; i++) {
- env->regs[i] = regs.gprs[i];
- }
- }
-
- /* The ACRS and CRS */
- if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
- for (i = 0; i < 16; i++) {
- env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
- env->cregs[i] = cs->kvm_run->s.regs.crs[i];
- }
- } else {
- r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
- if (r < 0) {
- return r;
- }
- for (i = 0; i < 16; i++) {
- env->aregs[i] = sregs.acrs[i];
- env->cregs[i] = sregs.crs[i];
- }
- }
-
- /* Floating point and vector registers */
- if (can_sync_regs(cs, KVM_SYNC_VRS)) {
- for (i = 0; i < 32; i++) {
- env->vregs[i][0] = cs->kvm_run->s.regs.vrs[i][0];
- env->vregs[i][1] = cs->kvm_run->s.regs.vrs[i][1];
- }
- env->fpc = cs->kvm_run->s.regs.fpc;
- } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
- for (i = 0; i < 16; i++) {
- *get_freg(env, i) = cs->kvm_run->s.regs.fprs[i];
- }
- env->fpc = cs->kvm_run->s.regs.fpc;
- } else {
- r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
- if (r < 0) {
- return r;
- }
- for (i = 0; i < 16; i++) {
- *get_freg(env, i) = fpu.fprs[i];
- }
- env->fpc = fpu.fpc;
- }
-
- /* The prefix */
- if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
- env->psa = cs->kvm_run->s.regs.prefix;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
- env->cputm = cs->kvm_run->s.regs.cputm;
- env->ckc = cs->kvm_run->s.regs.ckc;
- env->todpr = cs->kvm_run->s.regs.todpr;
- env->gbea = cs->kvm_run->s.regs.gbea;
- env->pp = cs->kvm_run->s.regs.pp;
- } else {
- /*
- * These ONE_REGS are not protected by a capability. As they are only
- * necessary for migration we just trace a possible error, but don't
- * return with an error return code.
- */
- kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
- kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
- kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
- kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
- kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
- memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
- memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
- env->bpbc = cs->kvm_run->s.regs.bpbc;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
- env->etoken = cs->kvm_run->s.regs.etoken;
- env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
- }
-
- /* pfault parameters */
- if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
- env->pfault_token = cs->kvm_run->s.regs.pft;
- env->pfault_select = cs->kvm_run->s.regs.pfs;
- env->pfault_compare = cs->kvm_run->s.regs.pfc;
- } else if (cap_async_pf) {
- r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
- if (r < 0) {
- return r;
- }
- r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
- if (r < 0) {
- return r;
- }
- r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
- if (r < 0) {
- return r;
- }
- }
-
- if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
- env->diag318_info = cs->kvm_run->s.regs.diag318;
- }
-
- return 0;
-}
-
-int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
-{
- int r;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_LOW,
- .addr = (uint64_t)tod_low,
- };
-
- r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (r) {
- return r;
- }
-
- attr.attr = KVM_S390_VM_TOD_HIGH;
- attr.addr = (uint64_t)tod_high;
- return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
-{
- int r;
- struct kvm_s390_vm_tod_clock gtod;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_EXT,
- .addr = (uint64_t)>od,
- };
-
- r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- *tod_high = gtod.epoch_idx;
- *tod_low = gtod.tod;
-
- return r;
-}
-
-int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
-{
- int r;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_LOW,
- .addr = (uint64_t)&tod_low,
- };
-
- r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- if (r) {
- return r;
- }
-
- attr.attr = KVM_S390_VM_TOD_HIGH;
- attr.addr = (uint64_t)&tod_high;
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
-{
- struct kvm_s390_vm_tod_clock gtod = {
- .epoch_idx = tod_high,
- .tod = tod_low,
- };
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_EXT,
- .addr = (uint64_t)>od,
- };
-
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-/**
- * kvm_s390_mem_op:
- * @addr: the logical start address in guest memory
- * @ar: the access register number
- * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
- * @len: length that should be transferred
- * @is_write: true = write, false = read
- * Returns: 0 on success, non-zero if an exception or error occurred
- *
- * Use KVM ioctl to read/write from/to guest memory. An access exception
- * is injected into the vCPU in case of translation errors.
- */
-int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
- int len, bool is_write)
-{
- struct kvm_s390_mem_op mem_op = {
- .gaddr = addr,
- .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
- .size = len,
- .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
- : KVM_S390_MEMOP_LOGICAL_READ,
- .buf = (uint64_t)hostbuf,
- .ar = ar,
- };
- int ret;
-
- if (!cap_mem_op) {
- return -ENOSYS;
- }
- if (!hostbuf) {
- mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
- }
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
- if (ret < 0) {
- warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
- }
- return ret;
-}
-
-int kvm_s390_mem_op_pv(S390CPU *cpu, uint64_t offset, void *hostbuf,
- int len, bool is_write)
-{
- struct kvm_s390_mem_op mem_op = {
- .sida_offset = offset,
- .size = len,
- .op = is_write ? KVM_S390_MEMOP_SIDA_WRITE
- : KVM_S390_MEMOP_SIDA_READ,
- .buf = (uint64_t)hostbuf,
- };
- int ret;
-
- if (!cap_mem_op || !cap_protected) {
- return -ENOSYS;
- }
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
- if (ret < 0) {
- error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
- abort();
- }
- return ret;
-}
-
-static uint8_t const *sw_bp_inst;
-static uint8_t sw_bp_ilen;
-
-static void determine_sw_breakpoint_instr(void)
-{
- /* DIAG 501 is used for sw breakpoints with old kernels */
- static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
- /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
- static const uint8_t instr_0x0000[] = {0x00, 0x00};
-
- if (sw_bp_inst) {
- return;
- }
- if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
- sw_bp_inst = diag_501;
- sw_bp_ilen = sizeof(diag_501);
- DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
- } else {
- sw_bp_inst = instr_0x0000;
- sw_bp_ilen = sizeof(instr_0x0000);
- DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
- }
-}
-
-int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- determine_sw_breakpoint_instr();
-
- if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sw_bp_ilen, 0) ||
- cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
- return -EINVAL;
- }
- return 0;
-}
-
-int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- uint8_t t[MAX_ILEN];
-
- if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
- return -EINVAL;
- } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
- return -EINVAL;
- } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sw_bp_ilen, 1)) {
- return -EINVAL;
- }
-
- return 0;
-}
-
-static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
- int len, int type)
-{
- int n;
-
- for (n = 0; n < nb_hw_breakpoints; n++) {
- if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
- (hw_breakpoints[n].len == len || len == -1)) {
- return &hw_breakpoints[n];
- }
- }
-
- return NULL;
-}
-
-static int insert_hw_breakpoint(target_ulong addr, int len, int type)
-{
- int size;
-
- if (find_hw_breakpoint(addr, len, type)) {
- return -EEXIST;
- }
-
- size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
-
- if (!hw_breakpoints) {
- nb_hw_breakpoints = 0;
- hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
- } else {
- hw_breakpoints =
- (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
- }
-
- if (!hw_breakpoints) {
- nb_hw_breakpoints = 0;
- return -ENOMEM;
- }
-
- hw_breakpoints[nb_hw_breakpoints].addr = addr;
- hw_breakpoints[nb_hw_breakpoints].len = len;
- hw_breakpoints[nb_hw_breakpoints].type = type;
-
- nb_hw_breakpoints++;
-
- return 0;
-}
-
-int kvm_arch_insert_hw_breakpoint(target_ulong addr,
- target_ulong len, int type)
-{
- switch (type) {
- case GDB_BREAKPOINT_HW:
- type = KVM_HW_BP;
- break;
- case GDB_WATCHPOINT_WRITE:
- if (len < 1) {
- return -EINVAL;
- }
- type = KVM_HW_WP_WRITE;
- break;
- default:
- return -ENOSYS;
- }
- return insert_hw_breakpoint(addr, len, type);
-}
-
-int kvm_arch_remove_hw_breakpoint(target_ulong addr,
- target_ulong len, int type)
-{
- int size;
- struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
-
- if (bp == NULL) {
- return -ENOENT;
- }
-
- nb_hw_breakpoints--;
- if (nb_hw_breakpoints > 0) {
- /*
- * In order to trim the array, move the last element to the position to
- * be removed - if necessary.
- */
- if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
- *bp = hw_breakpoints[nb_hw_breakpoints];
- }
- size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
- hw_breakpoints =
- (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
- } else {
- g_free(hw_breakpoints);
- hw_breakpoints = NULL;
- }
-
- return 0;
-}
-
-void kvm_arch_remove_all_hw_breakpoints(void)
-{
- nb_hw_breakpoints = 0;
- g_free(hw_breakpoints);
- hw_breakpoints = NULL;
-}
-
-void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
-{
- int i;
-
- if (nb_hw_breakpoints > 0) {
- dbg->arch.nr_hw_bp = nb_hw_breakpoints;
- dbg->arch.hw_bp = hw_breakpoints;
-
- for (i = 0; i < nb_hw_breakpoints; ++i) {
- hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
- hw_breakpoints[i].addr);
- }
- dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
- } else {
- dbg->arch.nr_hw_bp = 0;
- dbg->arch.hw_bp = NULL;
- }
-}
-
-void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
-{
-}
-
-MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
-{
- return MEMTXATTRS_UNSPECIFIED;
-}
-
-int kvm_arch_process_async_events(CPUState *cs)
-{
- return cs->halted;
-}
-
-static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
- struct kvm_s390_interrupt *interrupt)
-{
- int r = 0;
-
- interrupt->type = irq->type;
- switch (irq->type) {
- case KVM_S390_INT_VIRTIO:
- interrupt->parm = irq->u.ext.ext_params;
- /* fall through */
- case KVM_S390_INT_PFAULT_INIT:
- case KVM_S390_INT_PFAULT_DONE:
- interrupt->parm64 = irq->u.ext.ext_params2;
- break;
- case KVM_S390_PROGRAM_INT:
- interrupt->parm = irq->u.pgm.code;
- break;
- case KVM_S390_SIGP_SET_PREFIX:
- interrupt->parm = irq->u.prefix.address;
- break;
- case KVM_S390_INT_SERVICE:
- interrupt->parm = irq->u.ext.ext_params;
- break;
- case KVM_S390_MCHK:
- interrupt->parm = irq->u.mchk.cr14;
- interrupt->parm64 = irq->u.mchk.mcic;
- break;
- case KVM_S390_INT_EXTERNAL_CALL:
- interrupt->parm = irq->u.extcall.code;
- break;
- case KVM_S390_INT_EMERGENCY:
- interrupt->parm = irq->u.emerg.code;
- break;
- case KVM_S390_SIGP_STOP:
- case KVM_S390_RESTART:
- break; /* These types have no parameters */
- case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
- interrupt->parm = irq->u.io.subchannel_id << 16;
- interrupt->parm |= irq->u.io.subchannel_nr;
- interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
- interrupt->parm64 |= irq->u.io.io_int_word;
- break;
- default:
- r = -EINVAL;
- break;
- }
- return r;
-}
-
-static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
-{
- struct kvm_s390_interrupt kvmint = {};
- int r;
-
- r = s390_kvm_irq_to_interrupt(irq, &kvmint);
- if (r < 0) {
- fprintf(stderr, "%s called with bogus interrupt\n", __func__);
- exit(1);
- }
-
- r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
- if (r < 0) {
- fprintf(stderr, "KVM failed to inject interrupt\n");
- exit(1);
- }
-}
-
-void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
-{
- CPUState *cs = CPU(cpu);
- int r;
-
- if (cap_s390_irq) {
- r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
- if (!r) {
- return;
- }
- error_report("KVM failed to inject interrupt %llx", irq->type);
- exit(1);
- }
-
- inject_vcpu_irq_legacy(cs, irq);
-}
-
-void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq)
-{
- struct kvm_s390_interrupt kvmint = {};
- int r;
-
- r = s390_kvm_irq_to_interrupt(irq, &kvmint);
- if (r < 0) {
- fprintf(stderr, "%s called with bogus interrupt\n", __func__);
- exit(1);
- }
-
- r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
- if (r < 0) {
- fprintf(stderr, "KVM failed to inject interrupt\n");
- exit(1);
- }
-}
-
-void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_PROGRAM_INT,
- .u.pgm.code = code,
- };
- qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
- cpu->env.psw.addr);
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}
-
-void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_PROGRAM_INT,
- .u.pgm.code = code,
- .u.pgm.trans_exc_code = te_code,
- .u.pgm.exc_access_id = te_code & 3,
- };
-
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}
-
-static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
- uint16_t ipbh0)
-{
- CPUS390XState *env = &cpu->env;
- uint64_t sccb;
- uint32_t code;
- int r;
-
- sccb = env->regs[ipbh0 & 0xf];
- code = env->regs[(ipbh0 & 0xf0) >> 4];
-
- switch (run->s390_sieic.icptcode) {
- case ICPT_PV_INSTR_NOTIFICATION:
- g_assert(s390_is_pv());
- /* The notification intercepts are currently handled by KVM */
- error_report("unexpected SCLP PV notification");
- exit(1);
- break;
- case ICPT_PV_INSTR:
- g_assert(s390_is_pv());
- sclp_service_call_protected(env, sccb, code);
- /* Setting the CC is done by the Ultravisor. */
- break;
- case ICPT_INSTRUCTION:
- g_assert(!s390_is_pv());
- r = sclp_service_call(env, sccb, code);
- if (r < 0) {
- kvm_s390_program_interrupt(cpu, -r);
- return;
- }
- setcc(cpu, r);
- }
-}
-
-static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
-{
- CPUS390XState *env = &cpu->env;
- int rc = 0;
- uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
-
- switch (ipa1) {
- case PRIV_B2_XSCH:
- ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_CSCH:
- ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_HSCH:
- ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_MSCH:
- ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_SSCH:
- ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_STCRW:
- ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_STSCH:
- ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_TSCH:
- /* We should only get tsch via KVM_EXIT_S390_TSCH. */
- fprintf(stderr, "Spurious tsch intercept\n");
- break;
- case PRIV_B2_CHSC:
- ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_TPI:
- /* This should have been handled by kvm already. */
- fprintf(stderr, "Spurious tpi intercept\n");
- break;
- case PRIV_B2_SCHM:
- ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
- run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_RSCH:
- ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_RCHP:
- ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_STCPS:
- /* We do not provide this instruction, it is suppressed. */
- break;
- case PRIV_B2_SAL:
- ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_SIGA:
- /* Not provided, set CC = 3 for subchannel not operational */
- setcc(cpu, 3);
- break;
- case PRIV_B2_SCLP_CALL:
- kvm_sclp_service_call(cpu, run, ipbh0);
- break;
- default:
- rc = -1;
- DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
- break;
- }
-
- return rc;
-}
-
-static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
- uint8_t *ar)
-{
- CPUS390XState *env = &cpu->env;
- uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
- uint32_t base2 = run->s390_sieic.ipb >> 28;
- uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
- ((run->s390_sieic.ipb & 0xff00) << 4);
-
- if (disp2 & 0x80000) {
- disp2 += 0xfff00000;
- }
- if (ar) {
- *ar = base2;
- }
-
- return (base2 ? env->regs[base2] : 0) +
- (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
-}
-
-static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
- uint8_t *ar)
-{
- CPUS390XState *env = &cpu->env;
- uint32_t base2 = run->s390_sieic.ipb >> 28;
- uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
- ((run->s390_sieic.ipb & 0xff00) << 4);
-
- if (disp2 & 0x80000) {
- disp2 += 0xfff00000;
- }
- if (ar) {
- *ar = base2;
- }
-
- return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
-}
-
-static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return clp_service_call(cpu, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
- uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
- uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint64_t fiba;
- uint8_t ar;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- fiba = get_base_disp_rxy(cpu, run, &ar);
-
- return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint8_t r3 = run->s390_sieic.ipa & 0x000f;
- uint8_t isc;
- uint16_t mode;
- int r;
-
- mode = env->regs[r1] & 0xffff;
- isc = (env->regs[r3] >> 27) & 0x7;
- r = css_do_sic(env, isc, mode);
- if (r) {
- kvm_s390_program_interrupt(cpu, -r);
- }
-
- return 0;
-}
-
-static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
- uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint8_t r3 = run->s390_sieic.ipa & 0x000f;
- uint64_t gaddr;
- uint8_t ar;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- gaddr = get_base_disp_rsy(cpu, run, &ar);
-
- return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint64_t fiba;
- uint8_t ar;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- fiba = get_base_disp_rxy(cpu, run, &ar);
-
- return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
-{
- int r = 0;
-
- switch (ipa1) {
- case PRIV_B9_CLP:
- r = kvm_clp_service_call(cpu, run);
- break;
- case PRIV_B9_PCISTG:
- r = kvm_pcistg_service_call(cpu, run);
- break;
- case PRIV_B9_PCILG:
- r = kvm_pcilg_service_call(cpu, run);
- break;
- case PRIV_B9_RPCIT:
- r = kvm_rpcit_service_call(cpu, run);
- break;
- case PRIV_B9_EQBS:
- /* just inject exception */
- r = -1;
- break;
- default:
- r = -1;
- DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
- break;
- }
-
- return r;
-}
-
-static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
-{
- int r = 0;
-
- switch (ipbl) {
- case PRIV_EB_PCISTB:
- r = kvm_pcistb_service_call(cpu, run);
- break;
- case PRIV_EB_SIC:
- r = kvm_sic_service_call(cpu, run);
- break;
- case PRIV_EB_SQBS:
- /* just inject exception */
- r = -1;
- break;
- default:
- r = -1;
- DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
- break;
- }
-
- return r;
-}
-
-static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
-{
- int r = 0;
-
- switch (ipbl) {
- case PRIV_E3_MPCIFC:
- r = kvm_mpcifc_service_call(cpu, run);
- break;
- case PRIV_E3_STPCIFC:
- r = kvm_stpcifc_service_call(cpu, run);
- break;
- default:
- r = -1;
- DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
- break;
- }
-
- return r;
-}
-
-static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- int ret;
-
- ret = s390_virtio_hypercall(env);
- if (ret == -EINVAL) {
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- return 0;
- }
-
- return ret;
-}
-
-static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
-{
- uint64_t r1, r3;
- int rc;
-
- r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- r3 = run->s390_sieic.ipa & 0x000f;
- rc = handle_diag_288(&cpu->env, r1, r3);
- if (rc) {
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- }
-}
-
-static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
-{
- uint64_t r1, r3;
-
- r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- r3 = run->s390_sieic.ipa & 0x000f;
- handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
-}
-
-static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- unsigned long pc;
-
- pc = env->psw.addr - sw_bp_ilen;
- if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
- env->psw.addr = pc;
- return EXCP_DEBUG;
- }
-
- return -ENOENT;
-}
-
-void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
-{
- CPUS390XState *env = &S390_CPU(cs)->env;
-
- /* Feat bit is set only if KVM supports sync for diag318 */
- if (s390_has_feat(S390_FEAT_DIAG_318)) {
- env->diag318_info = diag318_info;
- cs->kvm_run->s.regs.diag318 = diag318_info;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
- }
-}
-
-static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
-{
- uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint64_t diag318_info = run->s.regs.gprs[reg];
- CPUState *t;
-
- /*
- * DIAG 318 can only be enabled with KVM support. As such, let's
- * ensure a guest cannot execute this instruction erroneously.
- */
- if (!s390_has_feat(S390_FEAT_DIAG_318)) {
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- return;
- }
-
- CPU_FOREACH(t) {
- run_on_cpu(t, s390_do_cpu_set_diag318,
- RUN_ON_CPU_HOST_ULONG(diag318_info));
- }
-}
-
-#define DIAG_KVM_CODE_MASK 0x000000000000ffff
-
-static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
-{
- int r = 0;
- uint16_t func_code;
-
- /*
- * For any diagnose call we support, bits 48-63 of the resulting
- * address specify the function code; the remainder is ignored.
- */
- func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
- switch (func_code) {
- case DIAG_TIMEREVENT:
- kvm_handle_diag_288(cpu, run);
- break;
- case DIAG_IPL:
- kvm_handle_diag_308(cpu, run);
- break;
- case DIAG_SET_CONTROL_PROGRAM_CODES:
- handle_diag_318(cpu, run);
- break;
- case DIAG_KVM_HYPERCALL:
- r = handle_hypercall(cpu, run);
- break;
- case DIAG_KVM_BREAKPOINT:
- r = handle_sw_breakpoint(cpu, run);
- break;
- default:
- DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- break;
- }
-
- return r;
-}
-
-static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
-{
- CPUS390XState *env = &cpu->env;
- const uint8_t r1 = ipa1 >> 4;
- const uint8_t r3 = ipa1 & 0x0f;
- int ret;
- uint8_t order;
-
- /* get order code */
- order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
-
- ret = handle_sigp(env, order, r1, r3);
- setcc(cpu, ret);
- return 0;
-}
-
-static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
-{
- unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
- uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
- int r = -1;
-
- DPRINTF("handle_instruction 0x%x 0x%x\n",
- run->s390_sieic.ipa, run->s390_sieic.ipb);
- switch (ipa0) {
- case IPA0_B2:
- r = handle_b2(cpu, run, ipa1);
- break;
- case IPA0_B9:
- r = handle_b9(cpu, run, ipa1);
- break;
- case IPA0_EB:
- r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
- break;
- case IPA0_E3:
- r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
- break;
- case IPA0_DIAG:
- r = handle_diag(cpu, run, run->s390_sieic.ipb);
- break;
- case IPA0_SIGP:
- r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
- break;
- }
-
- if (r < 0) {
- r = 0;
- kvm_s390_program_interrupt(cpu, PGM_OPERATION);
- }
-
- return r;
-}
-
-static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
- int pswoffset)
-{
- CPUState *cs = CPU(cpu);
-
- s390_cpu_halt(cpu);
- cpu->env.crash_reason = reason;
- qemu_system_guest_panicked(cpu_get_crash_info(cs));
-}
-
-/* try to detect pgm check loops */
-static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
-{
- CPUState *cs = CPU(cpu);
- PSW oldpsw, newpsw;
-
- newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
- offsetof(LowCore, program_new_psw));
- newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
- offsetof(LowCore, program_new_psw) + 8);
- oldpsw.mask = run->psw_mask;
- oldpsw.addr = run->psw_addr;
- /*
- * Avoid endless loops of operation exceptions, if the pgm new
- * PSW will cause a new operation exception.
- * The heuristic checks if the pgm new psw is within 6 bytes before
- * the faulting psw address (with same DAT, AS settings) and the
- * new psw is not a wait psw and the fault was not triggered by
- * problem state. In that case go into crashed state.
- */
-
- if (oldpsw.addr - newpsw.addr <= 6 &&
- !(newpsw.mask & PSW_MASK_WAIT) &&
- !(oldpsw.mask & PSW_MASK_PSTATE) &&
- (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
- (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
- unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
- offsetof(LowCore, program_new_psw));
- return EXCP_HALTED;
- }
- return 0;
-}
-
-static int handle_intercept(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
- int icpt_code = run->s390_sieic.icptcode;
- int r = 0;
-
- DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code, (long)run->psw_addr);
- switch (icpt_code) {
- case ICPT_INSTRUCTION:
- case ICPT_PV_INSTR:
- case ICPT_PV_INSTR_NOTIFICATION:
- r = handle_instruction(cpu, run);
- break;
- case ICPT_PROGRAM:
- unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
- offsetof(LowCore, program_new_psw));
- r = EXCP_HALTED;
- break;
- case ICPT_EXT_INT:
- unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
- offsetof(LowCore, external_new_psw));
- r = EXCP_HALTED;
- break;
- case ICPT_WAITPSW:
- /* disabled wait, since enabled wait is handled in kernel */
- s390_handle_wait(cpu);
- r = EXCP_HALTED;
- break;
- case ICPT_CPU_STOP:
- do_stop_interrupt(&cpu->env);
- r = EXCP_HALTED;
- break;
- case ICPT_OPEREXC:
- /* check for break points */
- r = handle_sw_breakpoint(cpu, run);
- if (r == -ENOENT) {
- /* Then check for potential pgm check loops */
- r = handle_oper_loop(cpu, run);
- if (r == 0) {
- kvm_s390_program_interrupt(cpu, PGM_OPERATION);
- }
- }
- break;
- case ICPT_SOFT_INTERCEPT:
- fprintf(stderr, "KVM unimplemented icpt SOFT\n");
- exit(1);
- break;
- case ICPT_IO:
- fprintf(stderr, "KVM unimplemented icpt IO\n");
- exit(1);
- break;
- default:
- fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
- exit(1);
- break;
- }
-
- return r;
-}
-
-static int handle_tsch(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
- int ret;
-
- ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
- RA_IGNORED);
- if (ret < 0) {
- /*
- * Failure.
- * If an I/O interrupt had been dequeued, we have to reinject it.
- */
- if (run->s390_tsch.dequeued) {
- s390_io_interrupt(run->s390_tsch.subchannel_id,
- run->s390_tsch.subchannel_nr,
- run->s390_tsch.io_int_parm,
- run->s390_tsch.io_int_word);
- }
- ret = 0;
- }
- return ret;
-}
-
-static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
-{
- const MachineState *ms = MACHINE(qdev_get_machine());
- uint16_t conf_cpus = 0, reserved_cpus = 0;
- SysIB_322 sysib;
- int del, i;
-
- if (s390_is_pv()) {
- s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib));
- } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
- return;
- }
- /* Shift the stack of Extended Names to prepare for our own data */
- memmove(&sysib.ext_names[1], &sysib.ext_names[0],
- sizeof(sysib.ext_names[0]) * (sysib.count - 1));
- /* First virt level, that doesn't provide Ext Names delimits stack. It is
- * assumed it's not capable of managing Extended Names for lower levels.
- */
- for (del = 1; del < sysib.count; del++) {
- if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
- break;
- }
- }
- if (del < sysib.count) {
- memset(sysib.ext_names[del], 0,
- sizeof(sysib.ext_names[0]) * (sysib.count - del));
- }
-
- /* count the cpus and split them into configured and reserved ones */
- for (i = 0; i < ms->possible_cpus->len; i++) {
- if (ms->possible_cpus->cpus[i].cpu) {
- conf_cpus++;
- } else {
- reserved_cpus++;
- }
- }
- sysib.vm[0].total_cpus = conf_cpus + reserved_cpus;
- sysib.vm[0].conf_cpus = conf_cpus;
- sysib.vm[0].reserved_cpus = reserved_cpus;
-
- /* Insert short machine name in EBCDIC, padded with blanks */
- if (qemu_name) {
- memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
- ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
- strlen(qemu_name)));
- }
- sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
- /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
- * considered by s390 as not capable of providing any Extended Name.
- * Therefore if no name was specified on qemu invocation, we go with the
- * same "KVMguest" default, which KVM has filled into short name field.
- */
- strpadcpy((char *)sysib.ext_names[0],
- sizeof(sysib.ext_names[0]),
- qemu_name ?: "KVMguest", '\0');
-
- /* Insert UUID */
- memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
-
- if (s390_is_pv()) {
- s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib));
- } else {
- s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
- }
-}
-
-static int handle_stsi(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
-
- switch (run->s390_stsi.fc) {
- case 3:
- if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
- return 0;
- }
- /* Only sysib 3.2.2 needs post-handling for now. */
- insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
- return 0;
- default:
- return 0;
- }
-}
-
-static int kvm_arch_handle_debug_exit(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
-
- int ret = 0;
- struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
-
- switch (arch_info->type) {
- case KVM_HW_WP_WRITE:
- if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
- cs->watchpoint_hit = &hw_watchpoint;
- hw_watchpoint.vaddr = arch_info->addr;
- hw_watchpoint.flags = BP_MEM_WRITE;
- ret = EXCP_DEBUG;
- }
- break;
- case KVM_HW_BP:
- if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
- ret = EXCP_DEBUG;
- }
- break;
- case KVM_SINGLESTEP:
- if (cs->singlestep_enabled) {
- ret = EXCP_DEBUG;
- }
- break;
- default:
- ret = -ENOSYS;
- }
-
- return ret;
-}
-
-int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
-{
- S390CPU *cpu = S390_CPU(cs);
- int ret = 0;
-
- qemu_mutex_lock_iothread();
-
- kvm_cpu_synchronize_state(cs);
-
- switch (run->exit_reason) {
- case KVM_EXIT_S390_SIEIC:
- ret = handle_intercept(cpu);
- break;
- case KVM_EXIT_S390_RESET:
- s390_ipl_reset_request(cs, S390_RESET_REIPL);
- break;
- case KVM_EXIT_S390_TSCH:
- ret = handle_tsch(cpu);
- break;
- case KVM_EXIT_S390_STSI:
- ret = handle_stsi(cpu);
- break;
- case KVM_EXIT_DEBUG:
- ret = kvm_arch_handle_debug_exit(cpu);
- break;
- default:
- fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
- break;
- }
- qemu_mutex_unlock_iothread();
-
- if (ret == 0) {
- ret = EXCP_INTERRUPT;
- }
- return ret;
-}
-
-bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
-{
- return true;
-}
-
-void kvm_s390_enable_css_support(S390CPU *cpu)
-{
- int r;
-
- /* Activate host kernel channel subsystem support. */
- r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
- assert(r == 0);
-}
-
-void kvm_arch_init_irq_routing(KVMState *s)
-{
- /*
- * Note that while irqchip capabilities generally imply that cpustates
- * are handled in-kernel, it is not true for s390 (yet); therefore, we
- * have to override the common code kvm_halt_in_kernel_allowed setting.
- */
- if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
- kvm_gsi_routing_allowed = true;
- kvm_halt_in_kernel_allowed = false;
- }
-}
-
-int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
- int vq, bool assign)
-{
- struct kvm_ioeventfd kick = {
- .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
- KVM_IOEVENTFD_FLAG_DATAMATCH,
- .fd = event_notifier_get_fd(notifier),
- .datamatch = vq,
- .addr = sch,
- .len = 8,
- };
- trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign,
- kick.datamatch);
- if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
- return -ENOSYS;
- }
- if (!assign) {
- kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
- }
- return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
-}
-
-int kvm_s390_get_ri(void)
-{
- return cap_ri;
-}
-
-int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
-{
- struct kvm_mp_state mp_state = {};
- int ret;
-
- /* the kvm part might not have been initialized yet */
- if (CPU(cpu)->kvm_state == NULL) {
- return 0;
- }
-
- switch (cpu_state) {
- case S390_CPU_STATE_STOPPED:
- mp_state.mp_state = KVM_MP_STATE_STOPPED;
- break;
- case S390_CPU_STATE_CHECK_STOP:
- mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
- break;
- case S390_CPU_STATE_OPERATING:
- mp_state.mp_state = KVM_MP_STATE_OPERATING;
- break;
- case S390_CPU_STATE_LOAD:
- mp_state.mp_state = KVM_MP_STATE_LOAD;
- break;
- default:
- error_report("Requested CPU state is not a valid S390 CPU state: %u",
- cpu_state);
- exit(1);
- }
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
- if (ret) {
- trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
- strerror(-ret));
- }
-
- return ret;
-}
-
-void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
-{
- unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
- struct kvm_s390_irq_state irq_state = {
- .buf = (uint64_t) cpu->irqstate,
- .len = VCPU_IRQ_BUF_SIZE(max_cpus),
- };
- CPUState *cs = CPU(cpu);
- int32_t bytes;
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
- return;
- }
-
- bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
- if (bytes < 0) {
- cpu->irqstate_saved_size = 0;
- error_report("Migration of interrupt state failed");
- return;
- }
-
- cpu->irqstate_saved_size = bytes;
-}
-
-int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_s390_irq_state irq_state = {
- .buf = (uint64_t) cpu->irqstate,
- .len = cpu->irqstate_saved_size,
- };
- int r;
-
- if (cpu->irqstate_saved_size == 0) {
- return 0;
- }
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
- return -ENOSYS;
- }
-
- r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
- if (r) {
- error_report("Setting interrupt state failed %d", r);
- }
- return r;
-}
-
-int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
- uint64_t address, uint32_t data, PCIDevice *dev)
-{
- S390PCIBusDevice *pbdev;
- uint32_t vec = data & ZPCI_MSI_VEC_MASK;
-
- if (!dev) {
- DPRINTF("add_msi_route no pci device\n");
- return -ENODEV;
- }
-
- pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
- if (!pbdev) {
- DPRINTF("add_msi_route no zpci device\n");
- return -ENODEV;
- }
-
- route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
- route->flags = 0;
- route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
- route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
- route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
- route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
- route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
- return 0;
-}
-
-int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
- int vector, PCIDevice *dev)
-{
- return 0;
-}
-
-int kvm_arch_release_virq_post(int virq)
-{
- return 0;
-}
-
-int kvm_arch_msi_data_to_gsi(uint32_t data)
-{
- abort();
-}
-
-static int query_cpu_subfunc(S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_subfunc prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
- .addr = (uint64_t) &prop,
- };
- int rc;
-
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- return rc;
- }
-
- /*
- * We're going to add all subfunctions now, if the corresponding feature
- * is available that unlocks the query functions.
- */
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
- if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
- }
- if (test_bit(S390_FEAT_MSA, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
- }
- if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
- }
- if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
- }
- if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
- }
- if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
- }
- if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
- }
- if (test_bit(S390_FEAT_ESORT_BASE, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
- }
- if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
- }
- return 0;
-}
-
-static int configure_cpu_subfunc(const S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_subfunc prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
- .addr = (uint64_t) &prop,
- };
-
- if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
- /* hardware support might be missing, IBC will handle most of this */
- return 0;
- }
-
- s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
- if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
- }
- if (test_bit(S390_FEAT_MSA, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
- }
- if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
- }
- if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
- s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
- }
- if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
- }
- if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
- }
- if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
- }
- if (test_bit(S390_FEAT_ESORT_BASE, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
- }
- if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
- }
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-static int kvm_to_feat[][2] = {
- { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
- { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
- { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
- { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
- { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
- { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
- { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
- { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
- { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
- { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
- { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
- { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
- { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
- { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
-};
-
-static int query_cpu_feat(S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_feat prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
- .addr = (uint64_t) &prop,
- };
- int rc;
- int i;
-
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- return rc;
- }
-
- for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
- if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
- set_bit(kvm_to_feat[i][1], features);
- }
- }
- return 0;
-}
-
-static int configure_cpu_feat(const S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_feat prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
- .addr = (uint64_t) &prop,
- };
- int i;
-
- for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
- if (test_bit(kvm_to_feat[i][1], features)) {
- set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
- }
- }
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-bool kvm_s390_cpu_models_supported(void)
-{
- if (!cpu_model_allowed()) {
- /* compatibility machines interfere with the cpu model */
- return false;
- }
- return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE_FEAT) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE_SUBFUNC);
-}
-
-void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
-{
- struct kvm_s390_vm_cpu_machine prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE,
- .addr = (uint64_t) &prop,
- };
- uint16_t unblocked_ibc = 0, cpu_type = 0;
- int rc;
-
- memset(model, 0, sizeof(*model));
-
- if (!kvm_s390_cpu_models_supported()) {
- error_setg(errp, "KVM doesn't support CPU models");
- return;
- }
-
- /* query the basic cpu model properties */
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
- return;
- }
-
- cpu_type = cpuid_type(prop.cpuid);
- if (has_ibc(prop.ibc)) {
- model->lowest_ibc = lowest_ibc(prop.ibc);
- unblocked_ibc = unblocked_ibc(prop.ibc);
- }
- model->cpu_id = cpuid_id(prop.cpuid);
- model->cpu_id_format = cpuid_format(prop.cpuid);
- model->cpu_ver = 0xff;
-
- /* get supported cpu features indicated via STFL(E) */
- s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
- (uint8_t *) prop.fac_mask);
- /* dat-enhancement facility 2 has no bit but was introduced with stfle */
- if (test_bit(S390_FEAT_STFLE, model->features)) {
- set_bit(S390_FEAT_DAT_ENH_2, model->features);
- }
- /* get supported cpu features indicated e.g. via SCLP */
- rc = query_cpu_feat(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error querying CPU features: %d", rc);
- return;
- }
- /* get supported cpu subfunctions indicated via query / test bit */
- rc = query_cpu_subfunc(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
- return;
- }
-
- /* PTFF subfunctions might be indicated although kernel support missing */
- if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
- clear_bit(S390_FEAT_PTFF_QSIE, model->features);
- clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
- clear_bit(S390_FEAT_PTFF_STOE, model->features);
- clear_bit(S390_FEAT_PTFF_STOUE, model->features);
- }
-
- /* with cpu model support, CMM is only indicated if really available */
- if (kvm_s390_cmma_available()) {
- set_bit(S390_FEAT_CMM, model->features);
- } else {
- /* no cmm -> no cmm nt */
- clear_bit(S390_FEAT_CMM_NT, model->features);
- }
-
- /* bpb needs kernel support for migration, VSIE and reset */
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
- clear_bit(S390_FEAT_BPB, model->features);
- }
-
- /*
- * If we have support for protected virtualization, indicate
- * the protected virtualization IPL unpack facility.
- */
- if (cap_protected) {
- set_bit(S390_FEAT_UNPACK, model->features);
- }
-
- /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
- set_bit(S390_FEAT_ZPCI, model->features);
- set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
-
- if (s390_known_cpu_type(cpu_type)) {
- /* we want the exact model, even if some features are missing */
- model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
- ibc_ec_ga(unblocked_ibc), NULL);
- } else {
- /* model unknown, e.g. too new - search using features */
- model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
- ibc_ec_ga(unblocked_ibc),
- model->features);
- }
- if (!model->def) {
- error_setg(errp, "KVM: host CPU model could not be identified");
- return;
- }
- /* for now, we can only provide the AP feature with HW support */
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
- KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
- set_bit(S390_FEAT_AP, model->features);
- }
-
- /*
- * Extended-Length SCCB is handled entirely within QEMU.
- * For PV guests this is completely fenced by the Ultravisor, as Service
- * Call error checking and STFLE interpretation are handled via SIE.
- */
- set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features);
-
- if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
- set_bit(S390_FEAT_DIAG_318, model->features);
- }
-
- /* strip of features that are not part of the maximum model */
- bitmap_and(model->features, model->features, model->def->full_feat,
- S390_FEAT_MAX);
-}
-
-static void kvm_s390_configure_apie(bool interpret)
-{
- uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
- KVM_S390_VM_CRYPTO_DISABLE_APIE;
-
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
- kvm_s390_set_attr(attr);
- }
-}
-
-void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
-{
- struct kvm_s390_vm_cpu_processor prop = {
- .fac_list = { 0 },
- };
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR,
- .addr = (uint64_t) &prop,
- };
- int rc;
-
- if (!model) {
- /* compatibility handling if cpu models are disabled */
- if (kvm_s390_cmma_available()) {
- kvm_s390_enable_cmma();
- }
- return;
- }
- if (!kvm_s390_cpu_models_supported()) {
- error_setg(errp, "KVM doesn't support CPU models");
- return;
- }
- prop.cpuid = s390_cpuid_from_cpu_model(model);
- prop.ibc = s390_ibc_from_cpu_model(model);
- /* configure cpu features indicated via STFL(e) */
- s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
- (uint8_t *) prop.fac_list);
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- if (rc) {
- error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
- return;
- }
- /* configure cpu features indicated e.g. via SCLP */
- rc = configure_cpu_feat(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
- return;
- }
- /* configure cpu subfunctions indicated via query / test bit */
- rc = configure_cpu_subfunc(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
- return;
- }
- /* enable CMM via CMMA */
- if (test_bit(S390_FEAT_CMM, model->features)) {
- kvm_s390_enable_cmma();
- }
-
- if (test_bit(S390_FEAT_AP, model->features)) {
- kvm_s390_configure_apie(true);
- }
-}
-
-void kvm_s390_restart_interrupt(S390CPU *cpu)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_RESTART,
- };
-
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}
-
-void kvm_s390_stop_interrupt(S390CPU *cpu)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_SIGP_STOP,
- };
-
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}
-
-bool kvm_arch_cpu_check_are_resettable(void)
-{
- return true;
-}
--- /dev/null
+/*
+ * QEMU S390x KVM implementation
+ *
+ * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
+ * Copyright IBM Corp. 2012
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include <sys/ioctl.h>
+
+#include <linux/kvm.h>
+#include <asm/ptrace.h>
+
+#include "qemu-common.h"
+#include "cpu.h"
+#include "s390x-internal.h"
+#include "kvm_s390x.h"
+#include "sysemu/kvm_int.h"
+#include "qemu/cutils.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/timer.h"
+#include "qemu/units.h"
+#include "qemu/main-loop.h"
+#include "qemu/mmap-alloc.h"
+#include "qemu/log.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/hw_accel.h"
+#include "sysemu/runstate.h"
+#include "sysemu/device_tree.h"
+#include "exec/gdbstub.h"
+#include "exec/ram_addr.h"
+#include "trace.h"
+#include "hw/s390x/s390-pci-inst.h"
+#include "hw/s390x/s390-pci-bus.h"
+#include "hw/s390x/ipl.h"
+#include "hw/s390x/ebcdic.h"
+#include "exec/memattrs.h"
+#include "hw/s390x/s390-virtio-ccw.h"
+#include "hw/s390x/s390-virtio-hcall.h"
+#include "hw/s390x/pv.h"
+
+#ifndef DEBUG_KVM
+#define DEBUG_KVM 0
+#endif
+
+#define DPRINTF(fmt, ...) do { \
+ if (DEBUG_KVM) { \
+ fprintf(stderr, fmt, ## __VA_ARGS__); \
+ } \
+} while (0)
+
+#define kvm_vm_check_mem_attr(s, attr) \
+ kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
+
+#define IPA0_DIAG 0x8300
+#define IPA0_SIGP 0xae00
+#define IPA0_B2 0xb200
+#define IPA0_B9 0xb900
+#define IPA0_EB 0xeb00
+#define IPA0_E3 0xe300
+
+#define PRIV_B2_SCLP_CALL 0x20
+#define PRIV_B2_CSCH 0x30
+#define PRIV_B2_HSCH 0x31
+#define PRIV_B2_MSCH 0x32
+#define PRIV_B2_SSCH 0x33
+#define PRIV_B2_STSCH 0x34
+#define PRIV_B2_TSCH 0x35
+#define PRIV_B2_TPI 0x36
+#define PRIV_B2_SAL 0x37
+#define PRIV_B2_RSCH 0x38
+#define PRIV_B2_STCRW 0x39
+#define PRIV_B2_STCPS 0x3a
+#define PRIV_B2_RCHP 0x3b
+#define PRIV_B2_SCHM 0x3c
+#define PRIV_B2_CHSC 0x5f
+#define PRIV_B2_SIGA 0x74
+#define PRIV_B2_XSCH 0x76
+
+#define PRIV_EB_SQBS 0x8a
+#define PRIV_EB_PCISTB 0xd0
+#define PRIV_EB_SIC 0xd1
+
+#define PRIV_B9_EQBS 0x9c
+#define PRIV_B9_CLP 0xa0
+#define PRIV_B9_PCISTG 0xd0
+#define PRIV_B9_PCILG 0xd2
+#define PRIV_B9_RPCIT 0xd3
+
+#define PRIV_E3_MPCIFC 0xd0
+#define PRIV_E3_STPCIFC 0xd4
+
+#define DIAG_TIMEREVENT 0x288
+#define DIAG_IPL 0x308
+#define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
+#define DIAG_KVM_HYPERCALL 0x500
+#define DIAG_KVM_BREAKPOINT 0x501
+
+#define ICPT_INSTRUCTION 0x04
+#define ICPT_PROGRAM 0x08
+#define ICPT_EXT_INT 0x14
+#define ICPT_WAITPSW 0x1c
+#define ICPT_SOFT_INTERCEPT 0x24
+#define ICPT_CPU_STOP 0x28
+#define ICPT_OPEREXC 0x2c
+#define ICPT_IO 0x40
+#define ICPT_PV_INSTR 0x68
+#define ICPT_PV_INSTR_NOTIFICATION 0x6c
+
+#define NR_LOCAL_IRQS 32
+/*
+ * Needs to be big enough to contain max_cpus emergency signals
+ * and in addition NR_LOCAL_IRQS interrupts
+ */
+#define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
+ (max_cpus + NR_LOCAL_IRQS))
+/*
+ * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
+ * as the dirty bitmap must be managed by bitops that take an int as
+ * position indicator. This would end at an unaligned address
+ * (0x7fffff00000). As future variants might provide larger pages
+ * and to make all addresses properly aligned, let us split at 4TB.
+ */
+#define KVM_SLOT_MAX_BYTES (4UL * TiB)
+
+static CPUWatchpoint hw_watchpoint;
+/*
+ * We don't use a list because this structure is also used to transmit the
+ * hardware breakpoints to the kernel.
+ */
+static struct kvm_hw_breakpoint *hw_breakpoints;
+static int nb_hw_breakpoints;
+
+const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
+ KVM_CAP_LAST_INFO
+};
+
+static int cap_sync_regs;
+static int cap_async_pf;
+static int cap_mem_op;
+static int cap_s390_irq;
+static int cap_ri;
+static int cap_hpage_1m;
+static int cap_vcpu_resets;
+static int cap_protected;
+
+static int active_cmma;
+
+static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
+{
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_MEM_CTRL,
+ .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
+ .addr = (uint64_t) memory_limit,
+ };
+
+ return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+}
+
+int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit)
+{
+ int rc;
+
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_MEM_CTRL,
+ .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
+ .addr = (uint64_t) &new_limit,
+ };
+
+ if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
+ return 0;
+ }
+
+ rc = kvm_s390_query_mem_limit(hw_limit);
+ if (rc) {
+ return rc;
+ } else if (*hw_limit < new_limit) {
+ return -E2BIG;
+ }
+
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+int kvm_s390_cmma_active(void)
+{
+ return active_cmma;
+}
+
+static bool kvm_s390_cmma_available(void)
+{
+ static bool initialized, value;
+
+ if (!initialized) {
+ initialized = true;
+ value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
+ kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
+ }
+ return value;
+}
+
+void kvm_s390_cmma_reset(void)
+{
+ int rc;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_MEM_CTRL,
+ .attr = KVM_S390_VM_MEM_CLR_CMMA,
+ };
+
+ if (!kvm_s390_cmma_active()) {
+ return;
+ }
+
+ rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ trace_kvm_clear_cmma(rc);
+}
+
+static void kvm_s390_enable_cmma(void)
+{
+ int rc;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_MEM_CTRL,
+ .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
+ };
+
+ if (cap_hpage_1m) {
+ warn_report("CMM will not be enabled because it is not "
+ "compatible with huge memory backings.");
+ return;
+ }
+ rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ active_cmma = !rc;
+ trace_kvm_enable_cmma(rc);
+}
+
+static void kvm_s390_set_attr(uint64_t attr)
+{
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CRYPTO,
+ .attr = attr,
+ };
+
+ int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
+
+ if (ret) {
+ error_report("Failed to set crypto device attribute %lu: %s",
+ attr, strerror(-ret));
+ }
+}
+
+static void kvm_s390_init_aes_kw(void)
+{
+ uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
+
+ if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
+ NULL)) {
+ attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
+ }
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
+ kvm_s390_set_attr(attr);
+ }
+}
+
+static void kvm_s390_init_dea_kw(void)
+{
+ uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
+
+ if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
+ NULL)) {
+ attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
+ }
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
+ kvm_s390_set_attr(attr);
+ }
+}
+
+void kvm_s390_crypto_reset(void)
+{
+ if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
+ kvm_s390_init_aes_kw();
+ kvm_s390_init_dea_kw();
+ }
+}
+
+void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp)
+{
+ if (pagesize == 4 * KiB) {
+ return;
+ }
+
+ if (!hpage_1m_allowed()) {
+ error_setg(errp, "This QEMU machine does not support huge page "
+ "mappings");
+ return;
+ }
+
+ if (pagesize != 1 * MiB) {
+ error_setg(errp, "Memory backing with 2G pages was specified, "
+ "but KVM does not support this memory backing");
+ return;
+ }
+
+ if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_HPAGE_1M, 0)) {
+ error_setg(errp, "Memory backing with 1M pages was specified, "
+ "but KVM does not support this memory backing");
+ return;
+ }
+
+ cap_hpage_1m = 1;
+}
+
+int kvm_s390_get_hpage_1m(void)
+{
+ return cap_hpage_1m;
+}
+
+static void ccw_machine_class_foreach(ObjectClass *oc, void *opaque)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
+}
+
+int kvm_arch_init(MachineState *ms, KVMState *s)
+{
+ object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE,
+ false, NULL);
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
+ error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
+ "please use kernel 3.15 or newer");
+ return -1;
+ }
+ if (!kvm_check_extension(s, KVM_CAP_S390_COW)) {
+ error_report("KVM is missing capability KVM_CAP_S390_COW - "
+ "unsupported environment");
+ return -1;
+ }
+
+ cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
+ cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
+ cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
+ cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
+ cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS);
+ cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
+
+ kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
+ if (ri_allowed()) {
+ if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
+ cap_ri = 1;
+ }
+ }
+ if (cpu_model_allowed()) {
+ kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0);
+ }
+
+ /*
+ * The migration interface for ais was introduced with kernel 4.13
+ * but the capability itself had been active since 4.12. As migration
+ * support is considered necessary, we only try to enable this for
+ * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
+ */
+ if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
+ kvm_check_extension(s, KVM_CAP_S390_AIS_MIGRATION)) {
+ kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0);
+ }
+
+ kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES);
+ return 0;
+}
+
+int kvm_arch_irqchip_create(KVMState *s)
+{
+ return 0;
+}
+
+unsigned long kvm_arch_vcpu_id(CPUState *cpu)
+{
+ return cpu->cpu_index;
+}
+
+int kvm_arch_init_vcpu(CPUState *cs)
+{
+ unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
+ S390CPU *cpu = S390_CPU(cs);
+ kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
+ cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus));
+ return 0;
+}
+
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+ S390CPU *cpu = S390_CPU(cs);
+
+ g_free(cpu->irqstate);
+ cpu->irqstate = NULL;
+
+ return 0;
+}
+
+static void kvm_s390_reset_vcpu(S390CPU *cpu, unsigned long type)
+{
+ CPUState *cs = CPU(cpu);
+
+ /*
+ * The reset call is needed here to reset in-kernel vcpu data that
+ * we can't access directly from QEMU (i.e. with older kernels
+ * which don't support sync_regs/ONE_REG). Before this ioctl
+ * cpu_synchronize_state() is called in common kvm code
+ * (kvm-all).
+ */
+ if (kvm_vcpu_ioctl(cs, type)) {
+ error_report("CPU reset failed on CPU %i type %lx",
+ cs->cpu_index, type);
+ }
+}
+
+void kvm_s390_reset_vcpu_initial(S390CPU *cpu)
+{
+ kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
+}
+
+void kvm_s390_reset_vcpu_clear(S390CPU *cpu)
+{
+ if (cap_vcpu_resets) {
+ kvm_s390_reset_vcpu(cpu, KVM_S390_CLEAR_RESET);
+ } else {
+ kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET);
+ }
+}
+
+void kvm_s390_reset_vcpu_normal(S390CPU *cpu)
+{
+ if (cap_vcpu_resets) {
+ kvm_s390_reset_vcpu(cpu, KVM_S390_NORMAL_RESET);
+ }
+}
+
+static int can_sync_regs(CPUState *cs, int regs)
+{
+ return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
+}
+
+int kvm_arch_put_registers(CPUState *cs, int level)
+{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
+ struct kvm_regs regs;
+ struct kvm_fpu fpu = {};
+ int r;
+ int i;
+
+ /* always save the PSW and the GPRS*/
+ cs->kvm_run->psw_addr = env->psw.addr;
+ cs->kvm_run->psw_mask = env->psw.mask;
+
+ if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.gprs[i] = env->regs[i];
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
+ }
+ } else {
+ for (i = 0; i < 16; i++) {
+ regs.gprs[i] = env->regs[i];
+ }
+ r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
+ if (r < 0) {
+ return r;
+ }
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_VRS)) {
+ for (i = 0; i < 32; i++) {
+ cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0];
+ cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1];
+ }
+ cs->kvm_run->s.regs.fpc = env->fpc;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
+ } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.fprs[i] = *get_freg(env, i);
+ }
+ cs->kvm_run->s.regs.fpc = env->fpc;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
+ } else {
+ /* Floating point */
+ for (i = 0; i < 16; i++) {
+ fpu.fprs[i] = *get_freg(env, i);
+ }
+ fpu.fpc = env->fpc;
+
+ r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
+ if (r < 0) {
+ return r;
+ }
+ }
+
+ /* Do we need to save more than that? */
+ if (level == KVM_PUT_RUNTIME_STATE) {
+ return 0;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
+ cs->kvm_run->s.regs.cputm = env->cputm;
+ cs->kvm_run->s.regs.ckc = env->ckc;
+ cs->kvm_run->s.regs.todpr = env->todpr;
+ cs->kvm_run->s.regs.gbea = env->gbea;
+ cs->kvm_run->s.regs.pp = env->pp;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
+ } else {
+ /*
+ * These ONE_REGS are not protected by a capability. As they are only
+ * necessary for migration we just trace a possible error, but don't
+ * return with an error return code.
+ */
+ kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
+ kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
+ kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
+ kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
+ kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
+ memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
+ }
+
+ /* pfault parameters */
+ if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
+ cs->kvm_run->s.regs.pft = env->pfault_token;
+ cs->kvm_run->s.regs.pfs = env->pfault_select;
+ cs->kvm_run->s.regs.pfc = env->pfault_compare;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
+ } else if (cap_async_pf) {
+ r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
+ if (r < 0) {
+ return r;
+ }
+ r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
+ if (r < 0) {
+ return r;
+ }
+ r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
+ if (r < 0) {
+ return r;
+ }
+ }
+
+ /* access registers and control registers*/
+ if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
+ for (i = 0; i < 16; i++) {
+ cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
+ cs->kvm_run->s.regs.crs[i] = env->cregs[i];
+ }
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
+ } else {
+ for (i = 0; i < 16; i++) {
+ sregs.acrs[i] = env->aregs[i];
+ sregs.crs[i] = env->cregs[i];
+ }
+ r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
+ if (r < 0) {
+ return r;
+ }
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
+ memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
+ cs->kvm_run->s.regs.bpbc = env->bpbc;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
+ cs->kvm_run->s.regs.etoken = env->etoken;
+ cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
+ cs->kvm_run->s.regs.diag318 = env->diag318_info;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
+ }
+
+ /* Finally the prefix */
+ if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
+ cs->kvm_run->s.regs.prefix = env->psa;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
+ } else {
+ /* prefix is only supported via sync regs */
+ }
+ return 0;
+}
+
+int kvm_arch_get_registers(CPUState *cs)
+{
+ S390CPU *cpu = S390_CPU(cs);
+ CPUS390XState *env = &cpu->env;
+ struct kvm_sregs sregs;
+ struct kvm_regs regs;
+ struct kvm_fpu fpu;
+ int i, r;
+
+ /* get the PSW */
+ env->psw.addr = cs->kvm_run->psw_addr;
+ env->psw.mask = cs->kvm_run->psw_mask;
+
+ /* the GPRS */
+ if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = cs->kvm_run->s.regs.gprs[i];
+ }
+ } else {
+ r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
+ if (r < 0) {
+ return r;
+ }
+ for (i = 0; i < 16; i++) {
+ env->regs[i] = regs.gprs[i];
+ }
+ }
+
+ /* The ACRS and CRS */
+ if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
+ env->cregs[i] = cs->kvm_run->s.regs.crs[i];
+ }
+ } else {
+ r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
+ if (r < 0) {
+ return r;
+ }
+ for (i = 0; i < 16; i++) {
+ env->aregs[i] = sregs.acrs[i];
+ env->cregs[i] = sregs.crs[i];
+ }
+ }
+
+ /* Floating point and vector registers */
+ if (can_sync_regs(cs, KVM_SYNC_VRS)) {
+ for (i = 0; i < 32; i++) {
+ env->vregs[i][0] = cs->kvm_run->s.regs.vrs[i][0];
+ env->vregs[i][1] = cs->kvm_run->s.regs.vrs[i][1];
+ }
+ env->fpc = cs->kvm_run->s.regs.fpc;
+ } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
+ for (i = 0; i < 16; i++) {
+ *get_freg(env, i) = cs->kvm_run->s.regs.fprs[i];
+ }
+ env->fpc = cs->kvm_run->s.regs.fpc;
+ } else {
+ r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
+ if (r < 0) {
+ return r;
+ }
+ for (i = 0; i < 16; i++) {
+ *get_freg(env, i) = fpu.fprs[i];
+ }
+ env->fpc = fpu.fpc;
+ }
+
+ /* The prefix */
+ if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
+ env->psa = cs->kvm_run->s.regs.prefix;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
+ env->cputm = cs->kvm_run->s.regs.cputm;
+ env->ckc = cs->kvm_run->s.regs.ckc;
+ env->todpr = cs->kvm_run->s.regs.todpr;
+ env->gbea = cs->kvm_run->s.regs.gbea;
+ env->pp = cs->kvm_run->s.regs.pp;
+ } else {
+ /*
+ * These ONE_REGS are not protected by a capability. As they are only
+ * necessary for migration we just trace a possible error, but don't
+ * return with an error return code.
+ */
+ kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
+ kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
+ kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
+ kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
+ kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
+ memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
+ memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
+ env->bpbc = cs->kvm_run->s.regs.bpbc;
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
+ env->etoken = cs->kvm_run->s.regs.etoken;
+ env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
+ }
+
+ /* pfault parameters */
+ if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
+ env->pfault_token = cs->kvm_run->s.regs.pft;
+ env->pfault_select = cs->kvm_run->s.regs.pfs;
+ env->pfault_compare = cs->kvm_run->s.regs.pfc;
+ } else if (cap_async_pf) {
+ r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
+ if (r < 0) {
+ return r;
+ }
+ r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
+ if (r < 0) {
+ return r;
+ }
+ r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
+ if (r < 0) {
+ return r;
+ }
+ }
+
+ if (can_sync_regs(cs, KVM_SYNC_DIAG318)) {
+ env->diag318_info = cs->kvm_run->s.regs.diag318;
+ }
+
+ return 0;
+}
+
+int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
+{
+ int r;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_LOW,
+ .addr = (uint64_t)tod_low,
+ };
+
+ r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ if (r) {
+ return r;
+ }
+
+ attr.attr = KVM_S390_VM_TOD_HIGH;
+ attr.addr = (uint64_t)tod_high;
+ return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+}
+
+int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
+{
+ int r;
+ struct kvm_s390_vm_tod_clock gtod;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_EXT,
+ .addr = (uint64_t)>od,
+ };
+
+ r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ *tod_high = gtod.epoch_idx;
+ *tod_low = gtod.tod;
+
+ return r;
+}
+
+int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
+{
+ int r;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_LOW,
+ .addr = (uint64_t)&tod_low,
+ };
+
+ r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ if (r) {
+ return r;
+ }
+
+ attr.attr = KVM_S390_VM_TOD_HIGH;
+ attr.addr = (uint64_t)&tod_high;
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
+{
+ struct kvm_s390_vm_tod_clock gtod = {
+ .epoch_idx = tod_high,
+ .tod = tod_low,
+ };
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_EXT,
+ .addr = (uint64_t)>od,
+ };
+
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+/**
+ * kvm_s390_mem_op:
+ * @addr: the logical start address in guest memory
+ * @ar: the access register number
+ * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
+ * @len: length that should be transferred
+ * @is_write: true = write, false = read
+ * Returns: 0 on success, non-zero if an exception or error occurred
+ *
+ * Use KVM ioctl to read/write from/to guest memory. An access exception
+ * is injected into the vCPU in case of translation errors.
+ */
+int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
+ int len, bool is_write)
+{
+ struct kvm_s390_mem_op mem_op = {
+ .gaddr = addr,
+ .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
+ .size = len,
+ .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
+ : KVM_S390_MEMOP_LOGICAL_READ,
+ .buf = (uint64_t)hostbuf,
+ .ar = ar,
+ };
+ int ret;
+
+ if (!cap_mem_op) {
+ return -ENOSYS;
+ }
+ if (!hostbuf) {
+ mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
+ }
+
+ ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
+ if (ret < 0) {
+ warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
+ }
+ return ret;
+}
+
+int kvm_s390_mem_op_pv(S390CPU *cpu, uint64_t offset, void *hostbuf,
+ int len, bool is_write)
+{
+ struct kvm_s390_mem_op mem_op = {
+ .sida_offset = offset,
+ .size = len,
+ .op = is_write ? KVM_S390_MEMOP_SIDA_WRITE
+ : KVM_S390_MEMOP_SIDA_READ,
+ .buf = (uint64_t)hostbuf,
+ };
+ int ret;
+
+ if (!cap_mem_op || !cap_protected) {
+ return -ENOSYS;
+ }
+
+ ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
+ if (ret < 0) {
+ error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
+ abort();
+ }
+ return ret;
+}
+
+static uint8_t const *sw_bp_inst;
+static uint8_t sw_bp_ilen;
+
+static void determine_sw_breakpoint_instr(void)
+{
+ /* DIAG 501 is used for sw breakpoints with old kernels */
+ static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
+ /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
+ static const uint8_t instr_0x0000[] = {0x00, 0x00};
+
+ if (sw_bp_inst) {
+ return;
+ }
+ if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
+ sw_bp_inst = diag_501;
+ sw_bp_ilen = sizeof(diag_501);
+ DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
+ } else {
+ sw_bp_inst = instr_0x0000;
+ sw_bp_ilen = sizeof(instr_0x0000);
+ DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
+ }
+}
+
+int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
+{
+ determine_sw_breakpoint_instr();
+
+ if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
+ sw_bp_ilen, 0) ||
+ cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
+{
+ uint8_t t[MAX_ILEN];
+
+ if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
+ return -EINVAL;
+ } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
+ return -EINVAL;
+ } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
+ sw_bp_ilen, 1)) {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
+ int len, int type)
+{
+ int n;
+
+ for (n = 0; n < nb_hw_breakpoints; n++) {
+ if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
+ (hw_breakpoints[n].len == len || len == -1)) {
+ return &hw_breakpoints[n];
+ }
+ }
+
+ return NULL;
+}
+
+static int insert_hw_breakpoint(target_ulong addr, int len, int type)
+{
+ int size;
+
+ if (find_hw_breakpoint(addr, len, type)) {
+ return -EEXIST;
+ }
+
+ size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
+
+ if (!hw_breakpoints) {
+ nb_hw_breakpoints = 0;
+ hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
+ } else {
+ hw_breakpoints =
+ (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
+ }
+
+ if (!hw_breakpoints) {
+ nb_hw_breakpoints = 0;
+ return -ENOMEM;
+ }
+
+ hw_breakpoints[nb_hw_breakpoints].addr = addr;
+ hw_breakpoints[nb_hw_breakpoints].len = len;
+ hw_breakpoints[nb_hw_breakpoints].type = type;
+
+ nb_hw_breakpoints++;
+
+ return 0;
+}
+
+int kvm_arch_insert_hw_breakpoint(target_ulong addr,
+ target_ulong len, int type)
+{
+ switch (type) {
+ case GDB_BREAKPOINT_HW:
+ type = KVM_HW_BP;
+ break;
+ case GDB_WATCHPOINT_WRITE:
+ if (len < 1) {
+ return -EINVAL;
+ }
+ type = KVM_HW_WP_WRITE;
+ break;
+ default:
+ return -ENOSYS;
+ }
+ return insert_hw_breakpoint(addr, len, type);
+}
+
+int kvm_arch_remove_hw_breakpoint(target_ulong addr,
+ target_ulong len, int type)
+{
+ int size;
+ struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
+
+ if (bp == NULL) {
+ return -ENOENT;
+ }
+
+ nb_hw_breakpoints--;
+ if (nb_hw_breakpoints > 0) {
+ /*
+ * In order to trim the array, move the last element to the position to
+ * be removed - if necessary.
+ */
+ if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
+ *bp = hw_breakpoints[nb_hw_breakpoints];
+ }
+ size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
+ hw_breakpoints =
+ (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
+ } else {
+ g_free(hw_breakpoints);
+ hw_breakpoints = NULL;
+ }
+
+ return 0;
+}
+
+void kvm_arch_remove_all_hw_breakpoints(void)
+{
+ nb_hw_breakpoints = 0;
+ g_free(hw_breakpoints);
+ hw_breakpoints = NULL;
+}
+
+void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
+{
+ int i;
+
+ if (nb_hw_breakpoints > 0) {
+ dbg->arch.nr_hw_bp = nb_hw_breakpoints;
+ dbg->arch.hw_bp = hw_breakpoints;
+
+ for (i = 0; i < nb_hw_breakpoints; ++i) {
+ hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
+ hw_breakpoints[i].addr);
+ }
+ dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
+ } else {
+ dbg->arch.nr_hw_bp = 0;
+ dbg->arch.hw_bp = NULL;
+ }
+}
+
+void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
+{
+}
+
+MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
+{
+ return MEMTXATTRS_UNSPECIFIED;
+}
+
+int kvm_arch_process_async_events(CPUState *cs)
+{
+ return cs->halted;
+}
+
+static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
+ struct kvm_s390_interrupt *interrupt)
+{
+ int r = 0;
+
+ interrupt->type = irq->type;
+ switch (irq->type) {
+ case KVM_S390_INT_VIRTIO:
+ interrupt->parm = irq->u.ext.ext_params;
+ /* fall through */
+ case KVM_S390_INT_PFAULT_INIT:
+ case KVM_S390_INT_PFAULT_DONE:
+ interrupt->parm64 = irq->u.ext.ext_params2;
+ break;
+ case KVM_S390_PROGRAM_INT:
+ interrupt->parm = irq->u.pgm.code;
+ break;
+ case KVM_S390_SIGP_SET_PREFIX:
+ interrupt->parm = irq->u.prefix.address;
+ break;
+ case KVM_S390_INT_SERVICE:
+ interrupt->parm = irq->u.ext.ext_params;
+ break;
+ case KVM_S390_MCHK:
+ interrupt->parm = irq->u.mchk.cr14;
+ interrupt->parm64 = irq->u.mchk.mcic;
+ break;
+ case KVM_S390_INT_EXTERNAL_CALL:
+ interrupt->parm = irq->u.extcall.code;
+ break;
+ case KVM_S390_INT_EMERGENCY:
+ interrupt->parm = irq->u.emerg.code;
+ break;
+ case KVM_S390_SIGP_STOP:
+ case KVM_S390_RESTART:
+ break; /* These types have no parameters */
+ case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
+ interrupt->parm = irq->u.io.subchannel_id << 16;
+ interrupt->parm |= irq->u.io.subchannel_nr;
+ interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
+ interrupt->parm64 |= irq->u.io.io_int_word;
+ break;
+ default:
+ r = -EINVAL;
+ break;
+ }
+ return r;
+}
+
+static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
+{
+ struct kvm_s390_interrupt kvmint = {};
+ int r;
+
+ r = s390_kvm_irq_to_interrupt(irq, &kvmint);
+ if (r < 0) {
+ fprintf(stderr, "%s called with bogus interrupt\n", __func__);
+ exit(1);
+ }
+
+ r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
+ if (r < 0) {
+ fprintf(stderr, "KVM failed to inject interrupt\n");
+ exit(1);
+ }
+}
+
+void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
+{
+ CPUState *cs = CPU(cpu);
+ int r;
+
+ if (cap_s390_irq) {
+ r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
+ if (!r) {
+ return;
+ }
+ error_report("KVM failed to inject interrupt %llx", irq->type);
+ exit(1);
+ }
+
+ inject_vcpu_irq_legacy(cs, irq);
+}
+
+void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq)
+{
+ struct kvm_s390_interrupt kvmint = {};
+ int r;
+
+ r = s390_kvm_irq_to_interrupt(irq, &kvmint);
+ if (r < 0) {
+ fprintf(stderr, "%s called with bogus interrupt\n", __func__);
+ exit(1);
+ }
+
+ r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
+ if (r < 0) {
+ fprintf(stderr, "KVM failed to inject interrupt\n");
+ exit(1);
+ }
+}
+
+void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_PROGRAM_INT,
+ .u.pgm.code = code,
+ };
+ qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
+ cpu->env.psw.addr);
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
+void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_PROGRAM_INT,
+ .u.pgm.code = code,
+ .u.pgm.trans_exc_code = te_code,
+ .u.pgm.exc_access_id = te_code & 3,
+ };
+
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
+static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
+ uint16_t ipbh0)
+{
+ CPUS390XState *env = &cpu->env;
+ uint64_t sccb;
+ uint32_t code;
+ int r;
+
+ sccb = env->regs[ipbh0 & 0xf];
+ code = env->regs[(ipbh0 & 0xf0) >> 4];
+
+ switch (run->s390_sieic.icptcode) {
+ case ICPT_PV_INSTR_NOTIFICATION:
+ g_assert(s390_is_pv());
+ /* The notification intercepts are currently handled by KVM */
+ error_report("unexpected SCLP PV notification");
+ exit(1);
+ break;
+ case ICPT_PV_INSTR:
+ g_assert(s390_is_pv());
+ sclp_service_call_protected(env, sccb, code);
+ /* Setting the CC is done by the Ultravisor. */
+ break;
+ case ICPT_INSTRUCTION:
+ g_assert(!s390_is_pv());
+ r = sclp_service_call(env, sccb, code);
+ if (r < 0) {
+ kvm_s390_program_interrupt(cpu, -r);
+ return;
+ }
+ setcc(cpu, r);
+ }
+}
+
+static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
+{
+ CPUS390XState *env = &cpu->env;
+ int rc = 0;
+ uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
+
+ switch (ipa1) {
+ case PRIV_B2_XSCH:
+ ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_CSCH:
+ ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_HSCH:
+ ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_MSCH:
+ ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_SSCH:
+ ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_STCRW:
+ ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_STSCH:
+ ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_TSCH:
+ /* We should only get tsch via KVM_EXIT_S390_TSCH. */
+ fprintf(stderr, "Spurious tsch intercept\n");
+ break;
+ case PRIV_B2_CHSC:
+ ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_TPI:
+ /* This should have been handled by kvm already. */
+ fprintf(stderr, "Spurious tpi intercept\n");
+ break;
+ case PRIV_B2_SCHM:
+ ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
+ run->s390_sieic.ipb, RA_IGNORED);
+ break;
+ case PRIV_B2_RSCH:
+ ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_RCHP:
+ ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_STCPS:
+ /* We do not provide this instruction, it is suppressed. */
+ break;
+ case PRIV_B2_SAL:
+ ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED);
+ break;
+ case PRIV_B2_SIGA:
+ /* Not provided, set CC = 3 for subchannel not operational */
+ setcc(cpu, 3);
+ break;
+ case PRIV_B2_SCLP_CALL:
+ kvm_sclp_service_call(cpu, run, ipbh0);
+ break;
+ default:
+ rc = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
+ break;
+ }
+
+ return rc;
+}
+
+static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
+ uint8_t *ar)
+{
+ CPUS390XState *env = &cpu->env;
+ uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
+ uint32_t base2 = run->s390_sieic.ipb >> 28;
+ uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
+ ((run->s390_sieic.ipb & 0xff00) << 4);
+
+ if (disp2 & 0x80000) {
+ disp2 += 0xfff00000;
+ }
+ if (ar) {
+ *ar = base2;
+ }
+
+ return (base2 ? env->regs[base2] : 0) +
+ (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
+}
+
+static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
+ uint8_t *ar)
+{
+ CPUS390XState *env = &cpu->env;
+ uint32_t base2 = run->s390_sieic.ipb >> 28;
+ uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
+ ((run->s390_sieic.ipb & 0xff00) << 4);
+
+ if (disp2 & 0x80000) {
+ disp2 += 0xfff00000;
+ }
+ if (ar) {
+ *ar = base2;
+ }
+
+ return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
+}
+
+static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ return clp_service_call(cpu, r2, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
+ uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
+ uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ uint64_t fiba;
+ uint8_t ar;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ fiba = get_base_disp_rxy(cpu, run, &ar);
+
+ return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ CPUS390XState *env = &cpu->env;
+ uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ uint8_t r3 = run->s390_sieic.ipa & 0x000f;
+ uint8_t isc;
+ uint16_t mode;
+ int r;
+
+ mode = env->regs[r1] & 0xffff;
+ isc = (env->regs[r3] >> 27) & 0x7;
+ r = css_do_sic(env, isc, mode);
+ if (r) {
+ kvm_s390_program_interrupt(cpu, -r);
+ }
+
+ return 0;
+}
+
+static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
+ uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ uint8_t r3 = run->s390_sieic.ipa & 0x000f;
+ uint64_t gaddr;
+ uint8_t ar;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ gaddr = get_base_disp_rsy(cpu, run, &ar);
+
+ return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ uint64_t fiba;
+ uint8_t ar;
+
+ if (s390_has_feat(S390_FEAT_ZPCI)) {
+ fiba = get_base_disp_rxy(cpu, run, &ar);
+
+ return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
+ } else {
+ return -1;
+ }
+}
+
+static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
+{
+ int r = 0;
+
+ switch (ipa1) {
+ case PRIV_B9_CLP:
+ r = kvm_clp_service_call(cpu, run);
+ break;
+ case PRIV_B9_PCISTG:
+ r = kvm_pcistg_service_call(cpu, run);
+ break;
+ case PRIV_B9_PCILG:
+ r = kvm_pcilg_service_call(cpu, run);
+ break;
+ case PRIV_B9_RPCIT:
+ r = kvm_rpcit_service_call(cpu, run);
+ break;
+ case PRIV_B9_EQBS:
+ /* just inject exception */
+ r = -1;
+ break;
+ default:
+ r = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
+ break;
+ }
+
+ return r;
+}
+
+static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
+{
+ int r = 0;
+
+ switch (ipbl) {
+ case PRIV_EB_PCISTB:
+ r = kvm_pcistb_service_call(cpu, run);
+ break;
+ case PRIV_EB_SIC:
+ r = kvm_sic_service_call(cpu, run);
+ break;
+ case PRIV_EB_SQBS:
+ /* just inject exception */
+ r = -1;
+ break;
+ default:
+ r = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
+ break;
+ }
+
+ return r;
+}
+
+static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
+{
+ int r = 0;
+
+ switch (ipbl) {
+ case PRIV_E3_MPCIFC:
+ r = kvm_mpcifc_service_call(cpu, run);
+ break;
+ case PRIV_E3_STPCIFC:
+ r = kvm_stpcifc_service_call(cpu, run);
+ break;
+ default:
+ r = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
+ break;
+ }
+
+ return r;
+}
+
+static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
+{
+ CPUS390XState *env = &cpu->env;
+ int ret;
+
+ ret = s390_virtio_hypercall(env);
+ if (ret == -EINVAL) {
+ kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
+ return 0;
+ }
+
+ return ret;
+}
+
+static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
+{
+ uint64_t r1, r3;
+ int rc;
+
+ r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ r3 = run->s390_sieic.ipa & 0x000f;
+ rc = handle_diag_288(&cpu->env, r1, r3);
+ if (rc) {
+ kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
+ }
+}
+
+static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
+{
+ uint64_t r1, r3;
+
+ r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ r3 = run->s390_sieic.ipa & 0x000f;
+ handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
+}
+
+static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
+{
+ CPUS390XState *env = &cpu->env;
+ unsigned long pc;
+
+ pc = env->psw.addr - sw_bp_ilen;
+ if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
+ env->psw.addr = pc;
+ return EXCP_DEBUG;
+ }
+
+ return -ENOENT;
+}
+
+void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
+{
+ CPUS390XState *env = &S390_CPU(cs)->env;
+
+ /* Feat bit is set only if KVM supports sync for diag318 */
+ if (s390_has_feat(S390_FEAT_DIAG_318)) {
+ env->diag318_info = diag318_info;
+ cs->kvm_run->s.regs.diag318 = diag318_info;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
+ }
+}
+
+static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
+{
+ uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ uint64_t diag318_info = run->s.regs.gprs[reg];
+ CPUState *t;
+
+ /*
+ * DIAG 318 can only be enabled with KVM support. As such, let's
+ * ensure a guest cannot execute this instruction erroneously.
+ */
+ if (!s390_has_feat(S390_FEAT_DIAG_318)) {
+ kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
+ return;
+ }
+
+ CPU_FOREACH(t) {
+ run_on_cpu(t, s390_do_cpu_set_diag318,
+ RUN_ON_CPU_HOST_ULONG(diag318_info));
+ }
+}
+
+#define DIAG_KVM_CODE_MASK 0x000000000000ffff
+
+static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
+{
+ int r = 0;
+ uint16_t func_code;
+
+ /*
+ * For any diagnose call we support, bits 48-63 of the resulting
+ * address specify the function code; the remainder is ignored.
+ */
+ func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
+ switch (func_code) {
+ case DIAG_TIMEREVENT:
+ kvm_handle_diag_288(cpu, run);
+ break;
+ case DIAG_IPL:
+ kvm_handle_diag_308(cpu, run);
+ break;
+ case DIAG_SET_CONTROL_PROGRAM_CODES:
+ handle_diag_318(cpu, run);
+ break;
+ case DIAG_KVM_HYPERCALL:
+ r = handle_hypercall(cpu, run);
+ break;
+ case DIAG_KVM_BREAKPOINT:
+ r = handle_sw_breakpoint(cpu, run);
+ break;
+ default:
+ DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
+ kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
+ break;
+ }
+
+ return r;
+}
+
+static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
+{
+ CPUS390XState *env = &cpu->env;
+ const uint8_t r1 = ipa1 >> 4;
+ const uint8_t r3 = ipa1 & 0x0f;
+ int ret;
+ uint8_t order;
+
+ /* get order code */
+ order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
+
+ ret = handle_sigp(env, order, r1, r3);
+ setcc(cpu, ret);
+ return 0;
+}
+
+static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
+{
+ unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
+ uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
+ int r = -1;
+
+ DPRINTF("handle_instruction 0x%x 0x%x\n",
+ run->s390_sieic.ipa, run->s390_sieic.ipb);
+ switch (ipa0) {
+ case IPA0_B2:
+ r = handle_b2(cpu, run, ipa1);
+ break;
+ case IPA0_B9:
+ r = handle_b9(cpu, run, ipa1);
+ break;
+ case IPA0_EB:
+ r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
+ break;
+ case IPA0_E3:
+ r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
+ break;
+ case IPA0_DIAG:
+ r = handle_diag(cpu, run, run->s390_sieic.ipb);
+ break;
+ case IPA0_SIGP:
+ r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
+ break;
+ }
+
+ if (r < 0) {
+ r = 0;
+ kvm_s390_program_interrupt(cpu, PGM_OPERATION);
+ }
+
+ return r;
+}
+
+static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
+ int pswoffset)
+{
+ CPUState *cs = CPU(cpu);
+
+ s390_cpu_halt(cpu);
+ cpu->env.crash_reason = reason;
+ qemu_system_guest_panicked(cpu_get_crash_info(cs));
+}
+
+/* try to detect pgm check loops */
+static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
+{
+ CPUState *cs = CPU(cpu);
+ PSW oldpsw, newpsw;
+
+ newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
+ offsetof(LowCore, program_new_psw));
+ newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
+ offsetof(LowCore, program_new_psw) + 8);
+ oldpsw.mask = run->psw_mask;
+ oldpsw.addr = run->psw_addr;
+ /*
+ * Avoid endless loops of operation exceptions, if the pgm new
+ * PSW will cause a new operation exception.
+ * The heuristic checks if the pgm new psw is within 6 bytes before
+ * the faulting psw address (with same DAT, AS settings) and the
+ * new psw is not a wait psw and the fault was not triggered by
+ * problem state. In that case go into crashed state.
+ */
+
+ if (oldpsw.addr - newpsw.addr <= 6 &&
+ !(newpsw.mask & PSW_MASK_WAIT) &&
+ !(oldpsw.mask & PSW_MASK_PSTATE) &&
+ (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
+ (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
+ unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
+ offsetof(LowCore, program_new_psw));
+ return EXCP_HALTED;
+ }
+ return 0;
+}
+
+static int handle_intercept(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+ int icpt_code = run->s390_sieic.icptcode;
+ int r = 0;
+
+ DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code, (long)run->psw_addr);
+ switch (icpt_code) {
+ case ICPT_INSTRUCTION:
+ case ICPT_PV_INSTR:
+ case ICPT_PV_INSTR_NOTIFICATION:
+ r = handle_instruction(cpu, run);
+ break;
+ case ICPT_PROGRAM:
+ unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
+ offsetof(LowCore, program_new_psw));
+ r = EXCP_HALTED;
+ break;
+ case ICPT_EXT_INT:
+ unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
+ offsetof(LowCore, external_new_psw));
+ r = EXCP_HALTED;
+ break;
+ case ICPT_WAITPSW:
+ /* disabled wait, since enabled wait is handled in kernel */
+ s390_handle_wait(cpu);
+ r = EXCP_HALTED;
+ break;
+ case ICPT_CPU_STOP:
+ do_stop_interrupt(&cpu->env);
+ r = EXCP_HALTED;
+ break;
+ case ICPT_OPEREXC:
+ /* check for break points */
+ r = handle_sw_breakpoint(cpu, run);
+ if (r == -ENOENT) {
+ /* Then check for potential pgm check loops */
+ r = handle_oper_loop(cpu, run);
+ if (r == 0) {
+ kvm_s390_program_interrupt(cpu, PGM_OPERATION);
+ }
+ }
+ break;
+ case ICPT_SOFT_INTERCEPT:
+ fprintf(stderr, "KVM unimplemented icpt SOFT\n");
+ exit(1);
+ break;
+ case ICPT_IO:
+ fprintf(stderr, "KVM unimplemented icpt IO\n");
+ exit(1);
+ break;
+ default:
+ fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
+ exit(1);
+ break;
+ }
+
+ return r;
+}
+
+static int handle_tsch(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+ int ret;
+
+ ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
+ RA_IGNORED);
+ if (ret < 0) {
+ /*
+ * Failure.
+ * If an I/O interrupt had been dequeued, we have to reinject it.
+ */
+ if (run->s390_tsch.dequeued) {
+ s390_io_interrupt(run->s390_tsch.subchannel_id,
+ run->s390_tsch.subchannel_nr,
+ run->s390_tsch.io_int_parm,
+ run->s390_tsch.io_int_word);
+ }
+ ret = 0;
+ }
+ return ret;
+}
+
+static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
+{
+ const MachineState *ms = MACHINE(qdev_get_machine());
+ uint16_t conf_cpus = 0, reserved_cpus = 0;
+ SysIB_322 sysib;
+ int del, i;
+
+ if (s390_is_pv()) {
+ s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib));
+ } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
+ return;
+ }
+ /* Shift the stack of Extended Names to prepare for our own data */
+ memmove(&sysib.ext_names[1], &sysib.ext_names[0],
+ sizeof(sysib.ext_names[0]) * (sysib.count - 1));
+ /* First virt level, that doesn't provide Ext Names delimits stack. It is
+ * assumed it's not capable of managing Extended Names for lower levels.
+ */
+ for (del = 1; del < sysib.count; del++) {
+ if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
+ break;
+ }
+ }
+ if (del < sysib.count) {
+ memset(sysib.ext_names[del], 0,
+ sizeof(sysib.ext_names[0]) * (sysib.count - del));
+ }
+
+ /* count the cpus and split them into configured and reserved ones */
+ for (i = 0; i < ms->possible_cpus->len; i++) {
+ if (ms->possible_cpus->cpus[i].cpu) {
+ conf_cpus++;
+ } else {
+ reserved_cpus++;
+ }
+ }
+ sysib.vm[0].total_cpus = conf_cpus + reserved_cpus;
+ sysib.vm[0].conf_cpus = conf_cpus;
+ sysib.vm[0].reserved_cpus = reserved_cpus;
+
+ /* Insert short machine name in EBCDIC, padded with blanks */
+ if (qemu_name) {
+ memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
+ ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
+ strlen(qemu_name)));
+ }
+ sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
+ /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
+ * considered by s390 as not capable of providing any Extended Name.
+ * Therefore if no name was specified on qemu invocation, we go with the
+ * same "KVMguest" default, which KVM has filled into short name field.
+ */
+ strpadcpy((char *)sysib.ext_names[0],
+ sizeof(sysib.ext_names[0]),
+ qemu_name ?: "KVMguest", '\0');
+
+ /* Insert UUID */
+ memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid));
+
+ if (s390_is_pv()) {
+ s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib));
+ } else {
+ s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
+ }
+}
+
+static int handle_stsi(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+
+ switch (run->s390_stsi.fc) {
+ case 3:
+ if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
+ return 0;
+ }
+ /* Only sysib 3.2.2 needs post-handling for now. */
+ insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
+ return 0;
+ default:
+ return 0;
+ }
+}
+
+static int kvm_arch_handle_debug_exit(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+
+ int ret = 0;
+ struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
+
+ switch (arch_info->type) {
+ case KVM_HW_WP_WRITE:
+ if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
+ cs->watchpoint_hit = &hw_watchpoint;
+ hw_watchpoint.vaddr = arch_info->addr;
+ hw_watchpoint.flags = BP_MEM_WRITE;
+ ret = EXCP_DEBUG;
+ }
+ break;
+ case KVM_HW_BP:
+ if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
+ ret = EXCP_DEBUG;
+ }
+ break;
+ case KVM_SINGLESTEP:
+ if (cs->singlestep_enabled) {
+ ret = EXCP_DEBUG;
+ }
+ break;
+ default:
+ ret = -ENOSYS;
+ }
+
+ return ret;
+}
+
+int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
+{
+ S390CPU *cpu = S390_CPU(cs);
+ int ret = 0;
+
+ qemu_mutex_lock_iothread();
+
+ kvm_cpu_synchronize_state(cs);
+
+ switch (run->exit_reason) {
+ case KVM_EXIT_S390_SIEIC:
+ ret = handle_intercept(cpu);
+ break;
+ case KVM_EXIT_S390_RESET:
+ s390_ipl_reset_request(cs, S390_RESET_REIPL);
+ break;
+ case KVM_EXIT_S390_TSCH:
+ ret = handle_tsch(cpu);
+ break;
+ case KVM_EXIT_S390_STSI:
+ ret = handle_stsi(cpu);
+ break;
+ case KVM_EXIT_DEBUG:
+ ret = kvm_arch_handle_debug_exit(cpu);
+ break;
+ default:
+ fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
+ break;
+ }
+ qemu_mutex_unlock_iothread();
+
+ if (ret == 0) {
+ ret = EXCP_INTERRUPT;
+ }
+ return ret;
+}
+
+bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
+{
+ return true;
+}
+
+void kvm_s390_enable_css_support(S390CPU *cpu)
+{
+ int r;
+
+ /* Activate host kernel channel subsystem support. */
+ r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
+ assert(r == 0);
+}
+
+void kvm_arch_init_irq_routing(KVMState *s)
+{
+ /*
+ * Note that while irqchip capabilities generally imply that cpustates
+ * are handled in-kernel, it is not true for s390 (yet); therefore, we
+ * have to override the common code kvm_halt_in_kernel_allowed setting.
+ */
+ if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
+ kvm_gsi_routing_allowed = true;
+ kvm_halt_in_kernel_allowed = false;
+ }
+}
+
+int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
+ int vq, bool assign)
+{
+ struct kvm_ioeventfd kick = {
+ .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
+ KVM_IOEVENTFD_FLAG_DATAMATCH,
+ .fd = event_notifier_get_fd(notifier),
+ .datamatch = vq,
+ .addr = sch,
+ .len = 8,
+ };
+ trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign,
+ kick.datamatch);
+ if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
+ return -ENOSYS;
+ }
+ if (!assign) {
+ kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+ }
+ return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
+}
+
+int kvm_s390_get_ri(void)
+{
+ return cap_ri;
+}
+
+int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
+{
+ struct kvm_mp_state mp_state = {};
+ int ret;
+
+ /* the kvm part might not have been initialized yet */
+ if (CPU(cpu)->kvm_state == NULL) {
+ return 0;
+ }
+
+ switch (cpu_state) {
+ case S390_CPU_STATE_STOPPED:
+ mp_state.mp_state = KVM_MP_STATE_STOPPED;
+ break;
+ case S390_CPU_STATE_CHECK_STOP:
+ mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
+ break;
+ case S390_CPU_STATE_OPERATING:
+ mp_state.mp_state = KVM_MP_STATE_OPERATING;
+ break;
+ case S390_CPU_STATE_LOAD:
+ mp_state.mp_state = KVM_MP_STATE_LOAD;
+ break;
+ default:
+ error_report("Requested CPU state is not a valid S390 CPU state: %u",
+ cpu_state);
+ exit(1);
+ }
+
+ ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
+ if (ret) {
+ trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
+ strerror(-ret));
+ }
+
+ return ret;
+}
+
+void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
+{
+ unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;
+ struct kvm_s390_irq_state irq_state = {
+ .buf = (uint64_t) cpu->irqstate,
+ .len = VCPU_IRQ_BUF_SIZE(max_cpus),
+ };
+ CPUState *cs = CPU(cpu);
+ int32_t bytes;
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
+ return;
+ }
+
+ bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
+ if (bytes < 0) {
+ cpu->irqstate_saved_size = 0;
+ error_report("Migration of interrupt state failed");
+ return;
+ }
+
+ cpu->irqstate_saved_size = bytes;
+}
+
+int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_s390_irq_state irq_state = {
+ .buf = (uint64_t) cpu->irqstate,
+ .len = cpu->irqstate_saved_size,
+ };
+ int r;
+
+ if (cpu->irqstate_saved_size == 0) {
+ return 0;
+ }
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
+ return -ENOSYS;
+ }
+
+ r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
+ if (r) {
+ error_report("Setting interrupt state failed %d", r);
+ }
+ return r;
+}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data, PCIDevice *dev)
+{
+ S390PCIBusDevice *pbdev;
+ uint32_t vec = data & ZPCI_MSI_VEC_MASK;
+
+ if (!dev) {
+ DPRINTF("add_msi_route no pci device\n");
+ return -ENODEV;
+ }
+
+ pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
+ if (!pbdev) {
+ DPRINTF("add_msi_route no zpci device\n");
+ return -ENODEV;
+ }
+
+ route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
+ route->flags = 0;
+ route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
+ route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
+ route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
+ route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
+ route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
+ return 0;
+}
+
+int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
+ int vector, PCIDevice *dev)
+{
+ return 0;
+}
+
+int kvm_arch_release_virq_post(int virq)
+{
+ return 0;
+}
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+ abort();
+}
+
+static int query_cpu_subfunc(S390FeatBitmap features)
+{
+ struct kvm_s390_vm_cpu_subfunc prop = {};
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
+ .addr = (uint64_t) &prop,
+ };
+ int rc;
+
+ rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ if (rc) {
+ return rc;
+ }
+
+ /*
+ * We're going to add all subfunctions now, if the corresponding feature
+ * is available that unlocks the query functions.
+ */
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
+ if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
+ }
+ if (test_bit(S390_FEAT_MSA, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
+ }
+ if (test_bit(S390_FEAT_ESORT_BASE, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
+ }
+ if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
+ }
+ return 0;
+}
+
+static int configure_cpu_subfunc(const S390FeatBitmap features)
+{
+ struct kvm_s390_vm_cpu_subfunc prop = {};
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
+ .addr = (uint64_t) &prop,
+ };
+
+ if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
+ /* hardware support might be missing, IBC will handle most of this */
+ return 0;
+ }
+
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
+ if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
+ }
+ if (test_bit(S390_FEAT_MSA, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
+ }
+ if (test_bit(S390_FEAT_MSA_EXT_9, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa);
+ }
+ if (test_bit(S390_FEAT_ESORT_BASE, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl);
+ }
+ if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
+ }
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+static int kvm_to_feat[][2] = {
+ { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
+ { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
+ { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
+ { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
+ { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
+ { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
+ { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
+ { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
+ { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
+ { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
+ { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
+ { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
+ { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
+ { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
+};
+
+static int query_cpu_feat(S390FeatBitmap features)
+{
+ struct kvm_s390_vm_cpu_feat prop = {};
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
+ .addr = (uint64_t) &prop,
+ };
+ int rc;
+ int i;
+
+ rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ if (rc) {
+ return rc;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
+ if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
+ set_bit(kvm_to_feat[i][1], features);
+ }
+ }
+ return 0;
+}
+
+static int configure_cpu_feat(const S390FeatBitmap features)
+{
+ struct kvm_s390_vm_cpu_feat prop = {};
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
+ .addr = (uint64_t) &prop,
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
+ if (test_bit(kvm_to_feat[i][1], features)) {
+ set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
+ }
+ }
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+bool kvm_s390_cpu_models_supported(void)
+{
+ if (!cpu_model_allowed()) {
+ /* compatibility machines interfere with the cpu model */
+ return false;
+ }
+ return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_MACHINE) &&
+ kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_PROCESSOR) &&
+ kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_MACHINE_FEAT) &&
+ kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
+ kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
+ KVM_S390_VM_CPU_MACHINE_SUBFUNC);
+}
+
+void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
+{
+ struct kvm_s390_vm_cpu_machine prop = {};
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_MACHINE,
+ .addr = (uint64_t) &prop,
+ };
+ uint16_t unblocked_ibc = 0, cpu_type = 0;
+ int rc;
+
+ memset(model, 0, sizeof(*model));
+
+ if (!kvm_s390_cpu_models_supported()) {
+ error_setg(errp, "KVM doesn't support CPU models");
+ return;
+ }
+
+ /* query the basic cpu model properties */
+ rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ if (rc) {
+ error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
+ return;
+ }
+
+ cpu_type = cpuid_type(prop.cpuid);
+ if (has_ibc(prop.ibc)) {
+ model->lowest_ibc = lowest_ibc(prop.ibc);
+ unblocked_ibc = unblocked_ibc(prop.ibc);
+ }
+ model->cpu_id = cpuid_id(prop.cpuid);
+ model->cpu_id_format = cpuid_format(prop.cpuid);
+ model->cpu_ver = 0xff;
+
+ /* get supported cpu features indicated via STFL(E) */
+ s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
+ (uint8_t *) prop.fac_mask);
+ /* dat-enhancement facility 2 has no bit but was introduced with stfle */
+ if (test_bit(S390_FEAT_STFLE, model->features)) {
+ set_bit(S390_FEAT_DAT_ENH_2, model->features);
+ }
+ /* get supported cpu features indicated e.g. via SCLP */
+ rc = query_cpu_feat(model->features);
+ if (rc) {
+ error_setg(errp, "KVM: Error querying CPU features: %d", rc);
+ return;
+ }
+ /* get supported cpu subfunctions indicated via query / test bit */
+ rc = query_cpu_subfunc(model->features);
+ if (rc) {
+ error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
+ return;
+ }
+
+ /* PTFF subfunctions might be indicated although kernel support missing */
+ if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
+ clear_bit(S390_FEAT_PTFF_QSIE, model->features);
+ clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
+ clear_bit(S390_FEAT_PTFF_STOE, model->features);
+ clear_bit(S390_FEAT_PTFF_STOUE, model->features);
+ }
+
+ /* with cpu model support, CMM is only indicated if really available */
+ if (kvm_s390_cmma_available()) {
+ set_bit(S390_FEAT_CMM, model->features);
+ } else {
+ /* no cmm -> no cmm nt */
+ clear_bit(S390_FEAT_CMM_NT, model->features);
+ }
+
+ /* bpb needs kernel support for migration, VSIE and reset */
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
+ clear_bit(S390_FEAT_BPB, model->features);
+ }
+
+ /*
+ * If we have support for protected virtualization, indicate
+ * the protected virtualization IPL unpack facility.
+ */
+ if (cap_protected) {
+ set_bit(S390_FEAT_UNPACK, model->features);
+ }
+
+ /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
+ set_bit(S390_FEAT_ZPCI, model->features);
+ set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
+
+ if (s390_known_cpu_type(cpu_type)) {
+ /* we want the exact model, even if some features are missing */
+ model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
+ ibc_ec_ga(unblocked_ibc), NULL);
+ } else {
+ /* model unknown, e.g. too new - search using features */
+ model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
+ ibc_ec_ga(unblocked_ibc),
+ model->features);
+ }
+ if (!model->def) {
+ error_setg(errp, "KVM: host CPU model could not be identified");
+ return;
+ }
+ /* for now, we can only provide the AP feature with HW support */
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
+ KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
+ set_bit(S390_FEAT_AP, model->features);
+ }
+
+ /*
+ * Extended-Length SCCB is handled entirely within QEMU.
+ * For PV guests this is completely fenced by the Ultravisor, as Service
+ * Call error checking and STFLE interpretation are handled via SIE.
+ */
+ set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features);
+
+ if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
+ set_bit(S390_FEAT_DIAG_318, model->features);
+ }
+
+ /* strip of features that are not part of the maximum model */
+ bitmap_and(model->features, model->features, model->def->full_feat,
+ S390_FEAT_MAX);
+}
+
+static void kvm_s390_configure_apie(bool interpret)
+{
+ uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
+ KVM_S390_VM_CRYPTO_DISABLE_APIE;
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
+ kvm_s390_set_attr(attr);
+ }
+}
+
+void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
+{
+ struct kvm_s390_vm_cpu_processor prop = {
+ .fac_list = { 0 },
+ };
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_CPU_MODEL,
+ .attr = KVM_S390_VM_CPU_PROCESSOR,
+ .addr = (uint64_t) &prop,
+ };
+ int rc;
+
+ if (!model) {
+ /* compatibility handling if cpu models are disabled */
+ if (kvm_s390_cmma_available()) {
+ kvm_s390_enable_cmma();
+ }
+ return;
+ }
+ if (!kvm_s390_cpu_models_supported()) {
+ error_setg(errp, "KVM doesn't support CPU models");
+ return;
+ }
+ prop.cpuid = s390_cpuid_from_cpu_model(model);
+ prop.ibc = s390_ibc_from_cpu_model(model);
+ /* configure cpu features indicated via STFL(e) */
+ s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
+ (uint8_t *) prop.fac_list);
+ rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ if (rc) {
+ error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
+ return;
+ }
+ /* configure cpu features indicated e.g. via SCLP */
+ rc = configure_cpu_feat(model->features);
+ if (rc) {
+ error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
+ return;
+ }
+ /* configure cpu subfunctions indicated via query / test bit */
+ rc = configure_cpu_subfunc(model->features);
+ if (rc) {
+ error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
+ return;
+ }
+ /* enable CMM via CMMA */
+ if (test_bit(S390_FEAT_CMM, model->features)) {
+ kvm_s390_enable_cmma();
+ }
+
+ if (test_bit(S390_FEAT_AP, model->features)) {
+ kvm_s390_configure_apie(true);
+ }
+}
+
+void kvm_s390_restart_interrupt(S390CPU *cpu)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_RESTART,
+ };
+
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
+void kvm_s390_stop_interrupt(S390CPU *cpu)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_SIGP_STOP,
+ };
+
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
+bool kvm_arch_cpu_check_are_resettable(void)
+{
+ return true;
+}
--- /dev/null
+/*
+ * QEMU KVM support -- s390x specific functions.
+ *
+ * Copyright (c) 2009 Ulrich Hecht
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef KVM_S390X_H
+#define KVM_S390X_H
+
+#include "cpu-qom.h"
+
+struct kvm_s390_irq;
+
+void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq);
+void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
+void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
+int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
+ int len, bool is_write);
+int kvm_s390_mem_op_pv(S390CPU *cpu, vaddr addr, void *hostbuf, int len,
+ bool is_write);
+void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code);
+int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
+void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
+int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
+int kvm_s390_get_hpage_1m(void);
+int kvm_s390_get_ri(void);
+int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
+int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_clock);
+int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_clock);
+int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_clock);
+void kvm_s390_enable_css_support(S390CPU *cpu);
+int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
+ int vq, bool assign);
+int kvm_s390_cmma_active(void);
+void kvm_s390_cmma_reset(void);
+void kvm_s390_reset_vcpu_clear(S390CPU *cpu);
+void kvm_s390_reset_vcpu_normal(S390CPU *cpu);
+void kvm_s390_reset_vcpu_initial(S390CPU *cpu);
+int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit);
+void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp);
+void kvm_s390_crypto_reset(void);
+void kvm_s390_restart_interrupt(S390CPU *cpu);
+void kvm_s390_stop_interrupt(S390CPU *cpu);
+void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info);
+
+#endif /* KVM_S390X_H */
--- /dev/null
+
+s390x_ss.add(when: 'CONFIG_KVM', if_true: files(
+ 'kvm.c'
+))
+
+# Newer kernels on s390 check for an S390_PGSTE program header and
+# enable the pgste page table extensions in that case. This makes
+# the vm.allocate_pgste sysctl unnecessary. We enable this program
+# header if
+# - we build on s390x
+# - we build the system emulation for s390x (qemu-system-s390x)
+# - KVM is enabled
+# - the linker supports --s390-pgste
+if host_machine.cpu_family() == 's390x' and cc.has_link_argument('-Wl,--s390-pgste')
+ s390x_softmmu_ss.add(when: 'CONFIG_KVM',
+ if_true: declare_dependency(link_args: ['-Wl,--s390-pgste']))
+endif
--- /dev/null
+# See docs/devel/tracing.txt for syntax documentation.
+
+# kvm.c
+kvm_enable_cmma(int rc) "CMMA: enabling with result code %d"
+kvm_clear_cmma(int rc) "CMMA: clearing with result code %d"
+kvm_failed_cpu_state_set(int cpu_index, uint8_t state, const char *msg) "Warning: Unable to set cpu %d state %" PRIu8 " to KVM: %s"
+kvm_assign_subch_ioeventfd(int fd, uint32_t addr, bool assign, int datamatch) "fd: %d sch: @0x%x assign: %d vq: %d"
--- /dev/null
+#include "trace/trace-target_s390x_kvm.h"
+++ /dev/null
-/*
- * QEMU KVM support -- s390x specific functions.
- *
- * Copyright (c) 2009 Ulrich Hecht
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- */
-
-#ifndef KVM_S390X_H
-#define KVM_S390X_H
-
-#include "cpu-qom.h"
-
-struct kvm_s390_irq;
-
-void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq);
-void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
-void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
-int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
- int len, bool is_write);
-int kvm_s390_mem_op_pv(S390CPU *cpu, vaddr addr, void *hostbuf, int len,
- bool is_write);
-void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code);
-int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
-void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
-int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
-int kvm_s390_get_hpage_1m(void);
-int kvm_s390_get_ri(void);
-int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
-int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_clock);
-int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_clock);
-int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_clock);
-void kvm_s390_enable_css_support(S390CPU *cpu);
-int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
- int vq, bool assign);
-int kvm_s390_cmma_active(void);
-void kvm_s390_cmma_reset(void);
-void kvm_s390_reset_vcpu_clear(S390CPU *cpu);
-void kvm_s390_reset_vcpu_normal(S390CPU *cpu);
-void kvm_s390_reset_vcpu_initial(S390CPU *cpu);
-int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit);
-void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp);
-void kvm_s390_crypto_reset(void);
-void kvm_s390_restart_interrupt(S390CPU *cpu);
-void kvm_s390_stop_interrupt(S390CPU *cpu);
-void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info);
-
-#endif /* KVM_S390X_H */
#include "qemu/osdep.h"
#include "cpu.h"
#include "s390x-internal.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "migration/vmstate.h"
#include "tcg/tcg_s390x.h"
#include "sysemu/kvm.h"
'cpu-dump.c',
))
-s390x_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'))
-
gen_features = executable('gen-features', 'gen-features.c', native: true,
build_by_default: false)
'cpu-sysemu.c',
))
-# Newer kernels on s390 check for an S390_PGSTE program header and
-# enable the pgste page table extensions in that case. This makes
-# the vm.allocate_pgste sysctl unnecessary. We enable this program
-# header if
-# - we build on s390x
-# - we build the system emulation for s390x (qemu-system-s390x)
-# - KVM is enabled
-# - the linker supports --s390-pgste
-if host_machine.cpu_family() == 's390x' and cc.has_link_argument('-Wl,--s390-pgste')
- s390x_softmmu_ss.add(when: 'CONFIG_KVM',
- if_true: declare_dependency(link_args: ['-Wl,--s390-pgste']))
-endif
-
s390x_user_ss = ss.source_set()
subdir('tcg')
+subdir('kvm')
target_arch += {'s390x': s390x_ss}
target_softmmu_arch += {'s390x': s390x_softmmu_ss}
#include "exec/address-spaces.h"
#include "cpu.h"
#include "s390x-internal.h"
-#include "kvm_s390x.h"
+#include "kvm/kvm_s390x.h"
#include "sysemu/kvm.h"
#include "sysemu/tcg.h"
#include "exec/exec-all.h"
ioinst_chp_id(const char *insn, int cssid, int chpid) "IOINST: %s (%x.%02x)"
ioinst_chsc_cmd(uint16_t cmd, uint16_t len) "IOINST: chsc command 0x%04x, len 0x%04x"
-# kvm.c
-kvm_enable_cmma(int rc) "CMMA: enabling with result code %d"
-kvm_clear_cmma(int rc) "CMMA: clearing with result code %d"
-kvm_failed_cpu_state_set(int cpu_index, uint8_t state, const char *msg) "Warning: Unable to set cpu %d state %" PRIu8 " to KVM: %s"
-kvm_assign_subch_ioeventfd(int fd, uint32_t addr, bool assign, int datamatch) "fd: %d sch: @0x%x assign: %d vq: %d"
-
# cpu-sysemu.c
cpu_set_state(int cpu_index, uint8_t state) "setting cpu %d state to %" PRIu8
cpu_halt(int cpu_index) "halting cpu %d"
projects / qemu.git / commitdiff