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| author |   Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-17 13:32:39 -0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-01-21 13:58:27 +0100 |
| commit | a0a2260c12d8658e522f21ed8ece72bbdede58fd (patch) | |
| tree | 4e6943b2aea4e0d6eed77c8718186c8ef9dbeb84 /arch/x86/kvm/cpuid.h | |
| parent | KVM: x86: Add dedicated emulator helpers for querying CPUID features (diff) | |
| download | linux-dev-a0a2260c12d8658e522f21ed8ece72bbdede58fd.tar.xz linux-dev-a0a2260c12d8658e522f21ed8ece72bbdede58fd.zip | |
KVM: x86: Move bit() helper to cpuid.h
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>
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index b82ae4d3dc71..f908f76216bf 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -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; |