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| author | Amit Shah <amit.shah@redhat.com> | 2015-09-23 11:57:33 +0530 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-02 16:22:01 -0300 |
| commit | c9b8f6b6210847b4381c5b2ee172b1c7eb9985d6 (patch) | |
| tree | 4f8dab54d914abe67e2bc18e6e64f4892e822303 /target-i386 | |
| parent | dd941cdcfec536aad6a310a153778142ed9f3e92 (diff) | |
| download | qemu-c9b8f6b6210847b4381c5b2ee172b1c7eb9985d6.zip qemu-c9b8f6b6210847b4381c5b2ee172b1c7eb9985d6.tar.gz qemu-c9b8f6b6210847b4381c5b2ee172b1c7eb9985d6.tar.bz2 | |
target-i386: get/put MSR_TSC_AUX across reset and migration
There's one report of migration breaking due to missing MSR_TSC_AUX
save/restore. Fix this by adding a new subsection that saves the state
of this MSR.
https://bugzilla.redhat.com/show_bug.cgi?id=1261797
Reported-by: Xiaoqing Wei <xwei@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Juan Quintela <quintela@redhat.com>
CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
CC: Marcelo Tosatti <mtosatti@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/kvm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 7b0ba17..80d1a7e 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -67,6 +67,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { static bool has_msr_star; static bool has_msr_hsave_pa; +static bool has_msr_tsc_aux; static bool has_msr_tsc_adjust; static bool has_msr_tsc_deadline; static bool has_msr_feature_control; @@ -825,6 +826,10 @@ static int kvm_get_supported_msrs(KVMState *s) has_msr_hsave_pa = true; continue; } + if (kvm_msr_list->indices[i] == MSR_TSC_AUX) { + has_msr_tsc_aux = true; + continue; + } if (kvm_msr_list->indices[i] == MSR_TSC_ADJUST) { has_msr_tsc_adjust = true; continue; @@ -1299,6 +1304,9 @@ static int kvm_put_msrs(X86CPU *cpu, int level) if (has_msr_hsave_pa) { kvm_msr_entry_set(&msrs[n++], MSR_VM_HSAVE_PA, env->vm_hsave); } + if (has_msr_tsc_aux) { + kvm_msr_entry_set(&msrs[n++], MSR_TSC_AUX, env->tsc_aux); + } if (has_msr_tsc_adjust) { kvm_msr_entry_set(&msrs[n++], MSR_TSC_ADJUST, env->tsc_adjust); } @@ -1671,6 +1679,9 @@ static int kvm_get_msrs(X86CPU *cpu) if (has_msr_hsave_pa) { msrs[n++].index = MSR_VM_HSAVE_PA; } + if (has_msr_tsc_aux) { + msrs[n++].index = MSR_TSC_AUX; + } if (has_msr_tsc_adjust) { msrs[n++].index = MSR_TSC_ADJUST; } @@ -1820,6 +1831,9 @@ static int kvm_get_msrs(X86CPU *cpu) case MSR_IA32_TSC: env->tsc = msrs[i].data; break; + case MSR_TSC_AUX: + env->tsc_aux = msrs[i].data; + break; case MSR_TSC_ADJUST: env->tsc_adjust = msrs[i].data; break; |