/x86_64/cpuid_test
/x86_64/cr4_cpuid_sync_test
/x86_64/debug_regs
-/x86_64/evmcs_test
/x86_64/exit_on_emulation_failure_test
/x86_64/fix_hypercall_test
/x86_64/get_msr_index_features
/x86_64/kvm_pv_test
/x86_64/hyperv_clock
/x86_64/hyperv_cpuid
+/x86_64/hyperv_evmcs
/x86_64/hyperv_features
/x86_64/hyperv_ipi
/x86_64/hyperv_svm_test
TEST_GEN_PROGS_x86_64 = x86_64/cpuid_test
TEST_GEN_PROGS_x86_64 += x86_64/cr4_cpuid_sync_test
TEST_GEN_PROGS_x86_64 += x86_64/get_msr_index_features
-TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test
TEST_GEN_PROGS_x86_64 += x86_64/exit_on_emulation_failure_test
TEST_GEN_PROGS_x86_64 += x86_64/fix_hypercall_test
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_clock
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_cpuid
+TEST_GEN_PROGS_x86_64 += x86_64/hyperv_evmcs
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_features
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_ipi
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_svm_test
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2018, Red Hat, Inc.
- *
- * Tests for Enlightened VMCS, including nested guest state.
- */
-#define _GNU_SOURCE /* for program_invocation_short_name */
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <linux/bitmap.h>
-
-#include "test_util.h"
-
-#include "kvm_util.h"
-
-#include "hyperv.h"
-#include "vmx.h"
-
-static int ud_count;
-
-static void guest_ud_handler(struct ex_regs *regs)
-{
- ud_count++;
- regs->rip += 3; /* VMLAUNCH */
-}
-
-static void guest_nmi_handler(struct ex_regs *regs)
-{
-}
-
-static inline void rdmsr_from_l2(uint32_t msr)
-{
- /* Currently, L1 doesn't preserve GPRs during vmexits. */
- __asm__ __volatile__ ("rdmsr" : : "c"(msr) :
- "rax", "rbx", "rdx", "rsi", "rdi", "r8", "r9",
- "r10", "r11", "r12", "r13", "r14", "r15");
-}
-
-/* Exit to L1 from L2 with RDMSR instruction */
-void l2_guest_code(void)
-{
- u64 unused;
-
- GUEST_SYNC(7);
-
- GUEST_SYNC(8);
-
- /* Forced exit to L1 upon restore */
- GUEST_SYNC(9);
-
- vmcall();
-
- /* MSR-Bitmap tests */
- rdmsr_from_l2(MSR_FS_BASE); /* intercepted */
- rdmsr_from_l2(MSR_FS_BASE); /* intercepted */
- rdmsr_from_l2(MSR_GS_BASE); /* not intercepted */
- vmcall();
- rdmsr_from_l2(MSR_GS_BASE); /* intercepted */
-
- /* L2 TLB flush tests */
- hyperv_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE | HV_HYPERCALL_FAST_BIT, 0x0,
- HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES | HV_FLUSH_ALL_PROCESSORS);
- rdmsr_from_l2(MSR_FS_BASE);
- /*
- * Note: hypercall status (RAX) is not preserved correctly by L1 after
- * synthetic vmexit, use unchecked version.
- */
- __hyperv_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE | HV_HYPERCALL_FAST_BIT, 0x0,
- HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES | HV_FLUSH_ALL_PROCESSORS,
- &unused);
-
- /* Done, exit to L1 and never come back. */
- vmcall();
-}
-
-void guest_code(struct vmx_pages *vmx_pages, struct hyperv_test_pages *hv_pages,
- vm_vaddr_t hv_hcall_page_gpa)
-{
-#define L2_GUEST_STACK_SIZE 64
- unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
-
- wrmsr(HV_X64_MSR_GUEST_OS_ID, HYPERV_LINUX_OS_ID);
- wrmsr(HV_X64_MSR_HYPERCALL, hv_hcall_page_gpa);
-
- x2apic_enable();
-
- GUEST_SYNC(1);
- GUEST_SYNC(2);
-
- enable_vp_assist(hv_pages->vp_assist_gpa, hv_pages->vp_assist);
- evmcs_enable();
-
- GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
- GUEST_SYNC(3);
- GUEST_ASSERT(load_evmcs(hv_pages));
- GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
-
- GUEST_SYNC(4);
- GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
-
- prepare_vmcs(vmx_pages, l2_guest_code,
- &l2_guest_stack[L2_GUEST_STACK_SIZE]);
-
- GUEST_SYNC(5);
- GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
- current_evmcs->revision_id = -1u;
- GUEST_ASSERT(vmlaunch());
- current_evmcs->revision_id = EVMCS_VERSION;
- GUEST_SYNC(6);
-
- vmwrite(PIN_BASED_VM_EXEC_CONTROL, vmreadz(PIN_BASED_VM_EXEC_CONTROL) |
- PIN_BASED_NMI_EXITING);
-
- /* L2 TLB flush setup */
- current_evmcs->partition_assist_page = hv_pages->partition_assist_gpa;
- current_evmcs->hv_enlightenments_control.nested_flush_hypercall = 1;
- current_evmcs->hv_vm_id = 1;
- current_evmcs->hv_vp_id = 1;
- current_vp_assist->nested_control.features.directhypercall = 1;
- *(u32 *)(hv_pages->partition_assist) = 0;
-
- GUEST_ASSERT(!vmlaunch());
- GUEST_ASSERT_EQ(vmreadz(VM_EXIT_REASON), EXIT_REASON_EXCEPTION_NMI);
- GUEST_ASSERT_EQ((vmreadz(VM_EXIT_INTR_INFO) & 0xff), NMI_VECTOR);
- GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
-
- /*
- * NMI forces L2->L1 exit, resuming L2 and hope that EVMCS is
- * up-to-date (RIP points where it should and not at the beginning
- * of l2_guest_code(). GUEST_SYNC(9) checkes that.
- */
- GUEST_ASSERT(!vmresume());
-
- GUEST_SYNC(10);
-
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
- current_evmcs->guest_rip += 3; /* vmcall */
-
- /* Intercept RDMSR 0xc0000100 */
- vmwrite(CPU_BASED_VM_EXEC_CONTROL, vmreadz(CPU_BASED_VM_EXEC_CONTROL) |
- CPU_BASED_USE_MSR_BITMAPS);
- set_bit(MSR_FS_BASE & 0x1fff, vmx_pages->msr + 0x400);
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
- current_evmcs->guest_rip += 2; /* rdmsr */
-
- /* Enable enlightened MSR bitmap */
- current_evmcs->hv_enlightenments_control.msr_bitmap = 1;
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
- current_evmcs->guest_rip += 2; /* rdmsr */
-
- /* Intercept RDMSR 0xc0000101 without telling KVM about it */
- set_bit(MSR_GS_BASE & 0x1fff, vmx_pages->msr + 0x400);
- /* Make sure HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP is set */
- current_evmcs->hv_clean_fields |= HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
- GUEST_ASSERT(!vmresume());
- /* Make sure we don't see EXIT_REASON_MSR_READ here so eMSR bitmap works */
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
- current_evmcs->guest_rip += 3; /* vmcall */
-
- /* Now tell KVM we've changed MSR-Bitmap */
- current_evmcs->hv_clean_fields &= ~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
- current_evmcs->guest_rip += 2; /* rdmsr */
-
- /*
- * L2 TLB flush test. First VMCALL should be handled directly by L0,
- * no VMCALL exit expected.
- */
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
- current_evmcs->guest_rip += 2; /* rdmsr */
- /* Enable synthetic vmexit */
- *(u32 *)(hv_pages->partition_assist) = 1;
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == HV_VMX_SYNTHETIC_EXIT_REASON_TRAP_AFTER_FLUSH);
-
- GUEST_ASSERT(!vmresume());
- GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
- GUEST_SYNC(11);
-
- /* Try enlightened vmptrld with an incorrect GPA */
- evmcs_vmptrld(0xdeadbeef, hv_pages->enlightened_vmcs);
- GUEST_ASSERT(vmlaunch());
- GUEST_ASSERT(ud_count == 1);
- GUEST_DONE();
-}
-
-void inject_nmi(struct kvm_vcpu *vcpu)
-{
- struct kvm_vcpu_events events;
-
- vcpu_events_get(vcpu, &events);
-
- events.nmi.pending = 1;
- events.flags |= KVM_VCPUEVENT_VALID_NMI_PENDING;
-
- vcpu_events_set(vcpu, &events);
-}
-
-static struct kvm_vcpu *save_restore_vm(struct kvm_vm *vm,
- struct kvm_vcpu *vcpu)
-{
- struct kvm_regs regs1, regs2;
- struct kvm_x86_state *state;
-
- state = vcpu_save_state(vcpu);
- memset(®s1, 0, sizeof(regs1));
- vcpu_regs_get(vcpu, ®s1);
-
- kvm_vm_release(vm);
-
- /* Restore state in a new VM. */
- vcpu = vm_recreate_with_one_vcpu(vm);
- vcpu_set_hv_cpuid(vcpu);
- vcpu_enable_evmcs(vcpu);
- vcpu_load_state(vcpu, state);
- kvm_x86_state_cleanup(state);
-
- memset(®s2, 0, sizeof(regs2));
- vcpu_regs_get(vcpu, ®s2);
- TEST_ASSERT(!memcmp(®s1, ®s2, sizeof(regs2)),
- "Unexpected register values after vcpu_load_state; rdi: %lx rsi: %lx",
- (ulong) regs2.rdi, (ulong) regs2.rsi);
- return vcpu;
-}
-
-int main(int argc, char *argv[])
-{
- vm_vaddr_t vmx_pages_gva = 0, hv_pages_gva = 0;
- vm_vaddr_t hcall_page;
-
- struct kvm_vcpu *vcpu;
- struct kvm_vm *vm;
- struct kvm_run *run;
- struct ucall uc;
- int stage;
-
- vm = vm_create_with_one_vcpu(&vcpu, guest_code);
-
- TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX));
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_NESTED_STATE));
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS));
-
- hcall_page = vm_vaddr_alloc_pages(vm, 1);
- memset(addr_gva2hva(vm, hcall_page), 0x0, getpagesize());
-
- vcpu_set_hv_cpuid(vcpu);
- vcpu_enable_evmcs(vcpu);
-
- vcpu_alloc_vmx(vm, &vmx_pages_gva);
- vcpu_alloc_hyperv_test_pages(vm, &hv_pages_gva);
- vcpu_args_set(vcpu, 3, vmx_pages_gva, hv_pages_gva, addr_gva2gpa(vm, hcall_page));
- vcpu_set_msr(vcpu, HV_X64_MSR_VP_INDEX, vcpu->id);
-
- vm_init_descriptor_tables(vm);
- vcpu_init_descriptor_tables(vcpu);
- vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler);
- vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler);
-
- pr_info("Running L1 which uses EVMCS to run L2\n");
-
- for (stage = 1;; stage++) {
- run = vcpu->run;
-
- vcpu_run(vcpu);
- TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
- "Stage %d: unexpected exit reason: %u (%s),\n",
- stage, run->exit_reason,
- exit_reason_str(run->exit_reason));
-
- switch (get_ucall(vcpu, &uc)) {
- case UCALL_ABORT:
- REPORT_GUEST_ASSERT(uc);
- /* NOT REACHED */
- case UCALL_SYNC:
- break;
- case UCALL_DONE:
- goto done;
- default:
- TEST_FAIL("Unknown ucall %lu", uc.cmd);
- }
-
- /* UCALL_SYNC is handled here. */
- TEST_ASSERT(!strcmp((const char *)uc.args[0], "hello") &&
- uc.args[1] == stage, "Stage %d: Unexpected register values vmexit, got %lx",
- stage, (ulong)uc.args[1]);
-
- vcpu = save_restore_vm(vm, vcpu);
-
- /* Force immediate L2->L1 exit before resuming */
- if (stage == 8) {
- pr_info("Injecting NMI into L1 before L2 had a chance to run after restore\n");
- inject_nmi(vcpu);
- }
-
- /*
- * Do KVM_GET_NESTED_STATE/KVM_SET_NESTED_STATE for a freshly
- * restored VM (before the first KVM_RUN) to check that
- * KVM_STATE_NESTED_EVMCS is not lost.
- */
- if (stage == 9) {
- pr_info("Trying extra KVM_GET_NESTED_STATE/KVM_SET_NESTED_STATE cycle\n");
- vcpu = save_restore_vm(vm, vcpu);
- }
- }
-
-done:
- kvm_vm_free(vm);
-}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018, Red Hat, Inc.
+ *
+ * Tests for Enlightened VMCS, including nested guest state.
+ */
+#define _GNU_SOURCE /* for program_invocation_short_name */
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <linux/bitmap.h>
+
+#include "test_util.h"
+
+#include "kvm_util.h"
+
+#include "hyperv.h"
+#include "vmx.h"
+
+static int ud_count;
+
+static void guest_ud_handler(struct ex_regs *regs)
+{
+ ud_count++;
+ regs->rip += 3; /* VMLAUNCH */
+}
+
+static void guest_nmi_handler(struct ex_regs *regs)
+{
+}
+
+static inline void rdmsr_from_l2(uint32_t msr)
+{
+ /* Currently, L1 doesn't preserve GPRs during vmexits. */
+ __asm__ __volatile__ ("rdmsr" : : "c"(msr) :
+ "rax", "rbx", "rdx", "rsi", "rdi", "r8", "r9",
+ "r10", "r11", "r12", "r13", "r14", "r15");
+}
+
+/* Exit to L1 from L2 with RDMSR instruction */
+void l2_guest_code(void)
+{
+ u64 unused;
+
+ GUEST_SYNC(7);
+
+ GUEST_SYNC(8);
+
+ /* Forced exit to L1 upon restore */
+ GUEST_SYNC(9);
+
+ vmcall();
+
+ /* MSR-Bitmap tests */
+ rdmsr_from_l2(MSR_FS_BASE); /* intercepted */
+ rdmsr_from_l2(MSR_FS_BASE); /* intercepted */
+ rdmsr_from_l2(MSR_GS_BASE); /* not intercepted */
+ vmcall();
+ rdmsr_from_l2(MSR_GS_BASE); /* intercepted */
+
+ /* L2 TLB flush tests */
+ hyperv_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE | HV_HYPERCALL_FAST_BIT, 0x0,
+ HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES | HV_FLUSH_ALL_PROCESSORS);
+ rdmsr_from_l2(MSR_FS_BASE);
+ /*
+ * Note: hypercall status (RAX) is not preserved correctly by L1 after
+ * synthetic vmexit, use unchecked version.
+ */
+ __hyperv_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE | HV_HYPERCALL_FAST_BIT, 0x0,
+ HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES | HV_FLUSH_ALL_PROCESSORS,
+ &unused);
+
+ /* Done, exit to L1 and never come back. */
+ vmcall();
+}
+
+void guest_code(struct vmx_pages *vmx_pages, struct hyperv_test_pages *hv_pages,
+ vm_vaddr_t hv_hcall_page_gpa)
+{
+#define L2_GUEST_STACK_SIZE 64
+ unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
+
+ wrmsr(HV_X64_MSR_GUEST_OS_ID, HYPERV_LINUX_OS_ID);
+ wrmsr(HV_X64_MSR_HYPERCALL, hv_hcall_page_gpa);
+
+ x2apic_enable();
+
+ GUEST_SYNC(1);
+ GUEST_SYNC(2);
+
+ enable_vp_assist(hv_pages->vp_assist_gpa, hv_pages->vp_assist);
+ evmcs_enable();
+
+ GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
+ GUEST_SYNC(3);
+ GUEST_ASSERT(load_evmcs(hv_pages));
+ GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
+
+ GUEST_SYNC(4);
+ GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
+
+ prepare_vmcs(vmx_pages, l2_guest_code,
+ &l2_guest_stack[L2_GUEST_STACK_SIZE]);
+
+ GUEST_SYNC(5);
+ GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
+ current_evmcs->revision_id = -1u;
+ GUEST_ASSERT(vmlaunch());
+ current_evmcs->revision_id = EVMCS_VERSION;
+ GUEST_SYNC(6);
+
+ vmwrite(PIN_BASED_VM_EXEC_CONTROL, vmreadz(PIN_BASED_VM_EXEC_CONTROL) |
+ PIN_BASED_NMI_EXITING);
+
+ /* L2 TLB flush setup */
+ current_evmcs->partition_assist_page = hv_pages->partition_assist_gpa;
+ current_evmcs->hv_enlightenments_control.nested_flush_hypercall = 1;
+ current_evmcs->hv_vm_id = 1;
+ current_evmcs->hv_vp_id = 1;
+ current_vp_assist->nested_control.features.directhypercall = 1;
+ *(u32 *)(hv_pages->partition_assist) = 0;
+
+ GUEST_ASSERT(!vmlaunch());
+ GUEST_ASSERT_EQ(vmreadz(VM_EXIT_REASON), EXIT_REASON_EXCEPTION_NMI);
+ GUEST_ASSERT_EQ((vmreadz(VM_EXIT_INTR_INFO) & 0xff), NMI_VECTOR);
+ GUEST_ASSERT(vmptrstz() == hv_pages->enlightened_vmcs_gpa);
+
+ /*
+ * NMI forces L2->L1 exit, resuming L2 and hope that EVMCS is
+ * up-to-date (RIP points where it should and not at the beginning
+ * of l2_guest_code(). GUEST_SYNC(9) checkes that.
+ */
+ GUEST_ASSERT(!vmresume());
+
+ GUEST_SYNC(10);
+
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
+ current_evmcs->guest_rip += 3; /* vmcall */
+
+ /* Intercept RDMSR 0xc0000100 */
+ vmwrite(CPU_BASED_VM_EXEC_CONTROL, vmreadz(CPU_BASED_VM_EXEC_CONTROL) |
+ CPU_BASED_USE_MSR_BITMAPS);
+ set_bit(MSR_FS_BASE & 0x1fff, vmx_pages->msr + 0x400);
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
+ current_evmcs->guest_rip += 2; /* rdmsr */
+
+ /* Enable enlightened MSR bitmap */
+ current_evmcs->hv_enlightenments_control.msr_bitmap = 1;
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
+ current_evmcs->guest_rip += 2; /* rdmsr */
+
+ /* Intercept RDMSR 0xc0000101 without telling KVM about it */
+ set_bit(MSR_GS_BASE & 0x1fff, vmx_pages->msr + 0x400);
+ /* Make sure HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP is set */
+ current_evmcs->hv_clean_fields |= HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
+ GUEST_ASSERT(!vmresume());
+ /* Make sure we don't see EXIT_REASON_MSR_READ here so eMSR bitmap works */
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
+ current_evmcs->guest_rip += 3; /* vmcall */
+
+ /* Now tell KVM we've changed MSR-Bitmap */
+ current_evmcs->hv_clean_fields &= ~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
+ current_evmcs->guest_rip += 2; /* rdmsr */
+
+ /*
+ * L2 TLB flush test. First VMCALL should be handled directly by L0,
+ * no VMCALL exit expected.
+ */
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_MSR_READ);
+ current_evmcs->guest_rip += 2; /* rdmsr */
+ /* Enable synthetic vmexit */
+ *(u32 *)(hv_pages->partition_assist) = 1;
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == HV_VMX_SYNTHETIC_EXIT_REASON_TRAP_AFTER_FLUSH);
+
+ GUEST_ASSERT(!vmresume());
+ GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
+ GUEST_SYNC(11);
+
+ /* Try enlightened vmptrld with an incorrect GPA */
+ evmcs_vmptrld(0xdeadbeef, hv_pages->enlightened_vmcs);
+ GUEST_ASSERT(vmlaunch());
+ GUEST_ASSERT(ud_count == 1);
+ GUEST_DONE();
+}
+
+void inject_nmi(struct kvm_vcpu *vcpu)
+{
+ struct kvm_vcpu_events events;
+
+ vcpu_events_get(vcpu, &events);
+
+ events.nmi.pending = 1;
+ events.flags |= KVM_VCPUEVENT_VALID_NMI_PENDING;
+
+ vcpu_events_set(vcpu, &events);
+}
+
+static struct kvm_vcpu *save_restore_vm(struct kvm_vm *vm,
+ struct kvm_vcpu *vcpu)
+{
+ struct kvm_regs regs1, regs2;
+ struct kvm_x86_state *state;
+
+ state = vcpu_save_state(vcpu);
+ memset(®s1, 0, sizeof(regs1));
+ vcpu_regs_get(vcpu, ®s1);
+
+ kvm_vm_release(vm);
+
+ /* Restore state in a new VM. */
+ vcpu = vm_recreate_with_one_vcpu(vm);
+ vcpu_set_hv_cpuid(vcpu);
+ vcpu_enable_evmcs(vcpu);
+ vcpu_load_state(vcpu, state);
+ kvm_x86_state_cleanup(state);
+
+ memset(®s2, 0, sizeof(regs2));
+ vcpu_regs_get(vcpu, ®s2);
+ TEST_ASSERT(!memcmp(®s1, ®s2, sizeof(regs2)),
+ "Unexpected register values after vcpu_load_state; rdi: %lx rsi: %lx",
+ (ulong) regs2.rdi, (ulong) regs2.rsi);
+ return vcpu;
+}
+
+int main(int argc, char *argv[])
+{
+ vm_vaddr_t vmx_pages_gva = 0, hv_pages_gva = 0;
+ vm_vaddr_t hcall_page;
+
+ struct kvm_vcpu *vcpu;
+ struct kvm_vm *vm;
+ struct kvm_run *run;
+ struct ucall uc;
+ int stage;
+
+ vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+
+ TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX));
+ TEST_REQUIRE(kvm_has_cap(KVM_CAP_NESTED_STATE));
+ TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS));
+
+ hcall_page = vm_vaddr_alloc_pages(vm, 1);
+ memset(addr_gva2hva(vm, hcall_page), 0x0, getpagesize());
+
+ vcpu_set_hv_cpuid(vcpu);
+ vcpu_enable_evmcs(vcpu);
+
+ vcpu_alloc_vmx(vm, &vmx_pages_gva);
+ vcpu_alloc_hyperv_test_pages(vm, &hv_pages_gva);
+ vcpu_args_set(vcpu, 3, vmx_pages_gva, hv_pages_gva, addr_gva2gpa(vm, hcall_page));
+ vcpu_set_msr(vcpu, HV_X64_MSR_VP_INDEX, vcpu->id);
+
+ vm_init_descriptor_tables(vm);
+ vcpu_init_descriptor_tables(vcpu);
+ vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler);
+ vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler);
+
+ pr_info("Running L1 which uses EVMCS to run L2\n");
+
+ for (stage = 1;; stage++) {
+ run = vcpu->run;
+
+ vcpu_run(vcpu);
+ TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
+ "Stage %d: unexpected exit reason: %u (%s),\n",
+ stage, run->exit_reason,
+ exit_reason_str(run->exit_reason));
+
+ switch (get_ucall(vcpu, &uc)) {
+ case UCALL_ABORT:
+ REPORT_GUEST_ASSERT(uc);
+ /* NOT REACHED */
+ case UCALL_SYNC:
+ break;
+ case UCALL_DONE:
+ goto done;
+ default:
+ TEST_FAIL("Unknown ucall %lu", uc.cmd);
+ }
+
+ /* UCALL_SYNC is handled here. */
+ TEST_ASSERT(!strcmp((const char *)uc.args[0], "hello") &&
+ uc.args[1] == stage, "Stage %d: Unexpected register values vmexit, got %lx",
+ stage, (ulong)uc.args[1]);
+
+ vcpu = save_restore_vm(vm, vcpu);
+
+ /* Force immediate L2->L1 exit before resuming */
+ if (stage == 8) {
+ pr_info("Injecting NMI into L1 before L2 had a chance to run after restore\n");
+ inject_nmi(vcpu);
+ }
+
+ /*
+ * Do KVM_GET_NESTED_STATE/KVM_SET_NESTED_STATE for a freshly
+ * restored VM (before the first KVM_RUN) to check that
+ * KVM_STATE_NESTED_EVMCS is not lost.
+ */
+ if (stage == 9) {
+ pr_info("Trying extra KVM_GET_NESTED_STATE/KVM_SET_NESTED_STATE cycle\n");
+ vcpu = save_restore_vm(vm, vcpu);
+ }
+ }
+
+done:
+ kvm_vm_free(vm);
+}
projects / linux.git / commitdiff