motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 08:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

KVM: SVM: add migration support for nested TSC scaling

Browse source 
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20211101132300.192584-4-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2021-11-01 15:23:00 +02:00 • committed by Paolo Bonzini
parent 6aedeb650e
commit cabf9862e4
4 changed files with 46 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

15
target/i386/kvm/kvm.c
View file

@ -105,6 +105,7 @@ static bool has_msr_hv_reenlightenment;
static bool has_msr_xss;
static bool has_msr_umwait;
static bool has_msr_spec_ctrl;
static bool has_tsc_scale_msr;
static bool has_msr_tsx_ctrl;
static bool has_msr_virt_ssbd;
static bool has_msr_smi_count;
@ -2216,6 +2217,9 @@ static int kvm_get_supported_msrs(KVMState *s)
case MSR_IA32_SPEC_CTRL:
has_msr_spec_ctrl = true;
break;
case MSR_AMD64_TSC_RATIO:
has_tsc_scale_msr = true;
break;
case MSR_IA32_TSX_CTRL:
has_msr_tsx_ctrl = true;
break;
@ -2972,6 +2976,10 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
if (has_msr_spec_ctrl) {
kvm_msr_entry_add(cpu, MSR_IA32_SPEC_CTRL, env->spec_ctrl);
}
if (has_tsc_scale_msr) {
kvm_msr_entry_add(cpu, MSR_AMD64_TSC_RATIO, env->amd_tsc_scale_msr);
}
if (has_msr_tsx_ctrl) {
kvm_msr_entry_add(cpu, MSR_IA32_TSX_CTRL, env->tsx_ctrl);
}
@ -3377,6 +3385,10 @@ static int kvm_get_msrs(X86CPU *cpu)
if (has_msr_spec_ctrl) {
kvm_msr_entry_add(cpu, MSR_IA32_SPEC_CTRL, 0);
}
if (has_tsc_scale_msr) {
kvm_msr_entry_add(cpu, MSR_AMD64_TSC_RATIO, 0);
}
if (has_msr_tsx_ctrl) {
kvm_msr_entry_add(cpu, MSR_IA32_TSX_CTRL, 0);
}
@ -3788,6 +3800,9 @@ static int kvm_get_msrs(X86CPU *cpu)
case MSR_IA32_SPEC_CTRL:
env->spec_ctrl = msrs[i].data;
break;
case MSR_AMD64_TSC_RATIO:
env->amd_tsc_scale_msr = msrs[i].data;
break;
case MSR_IA32_TSX_CTRL:
env->tsx_ctrl = msrs[i].data;
break;