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KVM: x86: move MSR_IA32_POWER_CTL handling to common code

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Make it available to AMD hosts as well, just in case someone is trying
to use an Intel processor's CPUID setup.

Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-06-06 14:32:59 +02:00
parent 4cb8b11635
commit 73f624f47c
4 changed files with 7 additions and 8 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -689,6 +689,7 @@ struct kvm_vcpu_arch {
u32 virtual_tsc_mult;
u32 virtual_tsc_khz;
s64 ia32_tsc_adjust_msr;
u64 msr_ia32_power_ctl;
u64 tsc_scaling_ratio;
atomic_t nmi_queued; /* unprocessed asynchronous NMIs */

6
arch/x86/kvm/vmx/vmx.c
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@ -1695,9 +1695,6 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_IA32_SYSENTER_ESP:
msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP);
break;
case MSR_IA32_POWER_CTL:
msr_info->data = vmx->msr_ia32_power_ctl;
break;
case MSR_IA32_BNDCFGS:
if (!kvm_mpx_supported() ||
(!msr_info->host_initiated &&
@ -1828,9 +1825,6 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_IA32_SYSENTER_ESP:
vmcs_writel(GUEST_SYSENTER_ESP, data);
break;
case MSR_IA32_POWER_CTL:
vmx->msr_ia32_power_ctl = data;
break;
case MSR_IA32_BNDCFGS:
if (!kvm_mpx_supported() ||
(!msr_info->host_initiated &&

2
arch/x86/kvm/vmx/vmx.h
View File

@ -260,8 +260,6 @@ struct vcpu_vmx {
unsigned long host_debugctlmsr;
u64 msr_ia32_power_ctl;
/*
* Only bits masked by msr_ia32_feature_control_valid_bits can be set in
* msr_ia32_feature_control. FEATURE_CONTROL_LOCKED is always included

6
arch/x86/kvm/x86.c
View File

@ -2563,6 +2563,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
return 1;
vcpu->arch.smbase = data;
break;
case MSR_IA32_POWER_CTL:
vcpu->arch.msr_ia32_power_ctl = data;
break;
case MSR_IA32_TSC:
kvm_write_tsc(vcpu, msr_info);
break;
@ -2822,6 +2825,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
return 1;
msr_info->data = vcpu->arch.arch_capabilities;
break;
case MSR_IA32_POWER_CTL:
msr_info->data = vcpu->arch.msr_ia32_power_ctl;
break;
case MSR_IA32_TSC:
msr_info->data = kvm_scale_tsc(vcpu, rdtsc()) + vcpu->arch.tsc_offset;
break;