target/ppc: Add HV support to ppc_interrupts_little_endian

The ppc_interrupts_little_endian function could be used for interrupts
delivered in Hypervisor mode, so add support for powernv8 and powernv9
to it.

Also drop the comment because it is inaccurate, all CPUs that can run
little endian can have interrupts in little endian. The point is
whether they can take interrupts in an endianness different from
MSR_LE.

This change has no functional impact.

Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220107222601.4101511-5-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

diff --git a/target/ppc/arch_dump.c b/target/ppc/arch_dump.c
index bb392f6d888559994090778ed296f611f6a9293f..12cde198a3153f7629a893a29c4edcbc509e6d17 100644 (file)
--- a/target/ppc/arch_dump.c
+++ b/target/ppc/arch_dump.c
@@ -237,7 +237,7 @@ int cpu_get_dump_info(ArchDumpInfo *info,
     info->d_machine = PPC_ELF_MACHINE;
     info->d_class = ELFCLASS;
 
-    if (ppc_interrupts_little_endian(cpu)) {
+    if (ppc_interrupts_little_endian(cpu, false)) {
         info->d_endian = ELFDATA2LSB;
     } else {
         info->d_endian = ELFDATA2MSB;

diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index f20d4ffa6d326fc8461279a628add51bf6e1bfea..a6fc857ad4c236e2123650e087b60d147fc31c0c 100644 (file)
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -2728,20 +2728,27 @@ static inline bool ppc_has_spr(PowerPCCPU *cpu, int spr)
     return cpu->env.spr_cb[spr].name != NULL;
 }
 
-static inline bool ppc_interrupts_little_endian(PowerPCCPU *cpu)
+#if !defined(CONFIG_USER_ONLY)
+static inline bool ppc_interrupts_little_endian(PowerPCCPU *cpu, bool hv)
 {
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+    CPUPPCState *env = &cpu->env;
+    bool ile = false;
+
+    if (hv && env->has_hv_mode) {
+        if (is_isa300(pcc)) {
+            ile = !!(env->spr[SPR_HID0] & HID0_POWER9_HILE);
+        } else {
+            ile = !!(env->spr[SPR_HID0] & HID0_HILE);
+        }
 
-    /*
-     * Only models that have an LPCR and know about LPCR_ILE can do little
-     * endian.
-     */
-    if (pcc->lpcr_mask & LPCR_ILE) {
-        return !!(cpu->env.spr[SPR_LPCR] & LPCR_ILE);
+    } else if (pcc->lpcr_mask & LPCR_ILE) {
+        ile = !!(env->spr[SPR_LPCR] & LPCR_ILE);
     }
 
-    return false;
+    return ile;
 }
+#endif
 
 void dump_mmu(CPUPPCState *env);
 

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index a52340ac0a468a4cbd9a85f4f2c9a87080b83916..3a430f23d6f368bb024fc6015787da5f0f4a03fc 100644 (file)
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1070,7 +1070,7 @@ void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
      */
     msr = (1ULL << MSR_ME);
     msr |= env->msr & (1ULL << MSR_SF);
-    if (ppc_interrupts_little_endian(cpu)) {
+    if (ppc_interrupts_little_endian(cpu, false)) {
         msr |= (1ULL << MSR_LE);
     }