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KVM: x86: Move bit() helper to cpuid.h

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Move bit() to cpuid.h in preparation for incorporating the reverse_cpuid
array in bit() build-time assertions.  Opportunistically use the BIT()
macro instead of open-coding the shift.

No functional change intended.

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 2019-12-17 13:32:39 -08:00 committed by Paolo Bonzini
parent 5ae78e95ed
commit a0a2260c12
2 changed files with 5 additions and 5 deletions
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5
arch/x86/kvm/cpuid.h
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@ -55,6 +55,11 @@ static const struct cpuid_reg reverse_cpuid[] = {
[CPUID_7_EDX] = { 7, 0, CPUID_EDX},
};
static inline u32 bit(int bitno)
{
return BIT(bitno & 31);
}
static __always_inline struct cpuid_reg x86_feature_cpuid(unsigned x86_feature)
{
unsigned x86_leaf = x86_feature / 32;

5
arch/x86/kvm/x86.h
View File

@ -144,11 +144,6 @@ static inline bool is_pae_paging(struct kvm_vcpu *vcpu)
return !is_long_mode(vcpu) && is_pae(vcpu) && is_paging(vcpu);
}
static inline u32 bit(int bitno)
{
return 1 << (bitno & 31);
}
static inline u8 vcpu_virt_addr_bits(struct kvm_vcpu *vcpu)
{
return kvm_read_cr4_bits(vcpu, X86_CR4_LA57) ? 57 : 48;