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KVM: x86: Handle UMIP emulation CPUID adjustment in VMX code

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Move the CPUID adjustment for UMIP emulation into VMX code to eliminate
an instance of the undesirable "unsigned f_* = *_supported ? F(*) : 0"
pattern in the common CPUID handling code.

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2020-03-02 15:56:35 -08:00 committed by Paolo Bonzini
parent 5ffec6f910
commit e574768f84
2 changed files with 2 additions and 2 deletions
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2
arch/x86/kvm/cpuid.c
View File

@ -331,7 +331,6 @@ static int __do_cpuid_func_emulated(struct kvm_cpuid_array *array, u32 func)
static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry)
{
unsigned f_umip = kvm_x86_ops->umip_emulated() ? F(UMIP) : 0;
unsigned f_intel_pt = kvm_x86_ops->pt_supported() ? F(INTEL_PT) : 0;
unsigned f_la57;
unsigned f_pku = kvm_x86_ops->pku_supported() ? F(PKU) : 0;
@ -374,7 +373,6 @@ static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry)
cpuid_entry_mask(entry, CPUID_7_ECX);
/* Set LA57 based on hardware capability. */
entry->ecx |= f_la57;
entry->ecx |= f_umip;
entry->ecx |= f_pku;
/* PKU is not yet implemented for shadow paging. */
if (!tdp_enabled || !boot_cpu_has(X86_FEATURE_OSPKE))

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

@ -7135,6 +7135,8 @@ static void vmx_set_supported_cpuid(struct kvm_cpuid_entry2 *entry)
cpuid_entry_set(entry, X86_FEATURE_MPX);
if (boot_cpu_has(X86_FEATURE_INVPCID) && cpu_has_vmx_invpcid())
cpuid_entry_set(entry, X86_FEATURE_INVPCID);
if (vmx_umip_emulated())
cpuid_entry_set(entry, X86_FEATURE_UMIP);
break;
default:
break;