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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2018-11-05 21:44:32 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-12-21 13:28:25 +0300 |
| commit | 9b7ebff23cb8a8e126b3852ad0b1bfb284f25273 (patch) | |
| tree | a445fe43cf8d3c0fd70705aaf3f58dc2817be16b /arch/x86/kvm/cpuid.c | |
| parent | 788fc1e9ad8e1d332d3a18692028d1faee6fabb0 (diff) | |
| download | linux-9b7ebff23cb8a8e126b3852ad0b1bfb284f25273.tar.xz | |
KVM: x86: Remove KF() macro placeholder
Although well-intentioned, keeping the KF() definition as a hint for
handling scattered CPUID features may be counter-productive. Simply
redefining the bit position only works for directly manipulating the
guest's CPUID leafs, e.g. it doesn't make guest_cpuid_has() magically
work. Taking an alternative approach, e.g. ensuring the bit position
is identical between the Linux-defined and hardware-defined features,
may be a simpler and/or more effective method of exposing scattered
features to the guest.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index cc6dd65828a4..be5e64c61d8f 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -67,9 +67,6 @@ u64 kvm_supported_xcr0(void) #define F(x) bit(X86_FEATURE_##x) -/* For scattered features from cpufeatures.h; we currently expose none */ -#define KF(x) bit(KVM_CPUID_BIT_##x) - int kvm_update_cpuid(struct kvm_vcpu *vcpu) { struct kvm_cpuid_entry2 *best; |