diff options
author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-02-18 15:40:11 -0800 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-27 13:11:08 -0400 |
commit | cb97c2d680dd9cefd2b36cafd2426f52d85b27e7 (patch) | |
tree | e42d1cc22d5a8a6daf588870cb9c22f7fb629464 /arch/x86/include/asm/kvm_host.h | |
parent | 7cb85fc465fdb91e88eff02b496150b1270952cf (diff) |
KVM: x86: Take an unsigned 32-bit int for has_emulated_msr()'s index
Take a u32 for the index in has_emulated_msr() to match hardware, which
treats MSR indices as unsigned 32-bit values. Functionally, taking a
signed int doesn't cause problems with the current code base, but could
theoretically cause problems with 32-bit KVM, e.g. if the index were
checked via a less-than statement, which would evaluate incorrectly for
MSR indices with bit 31 set.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200218234012.7110-3-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
-rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index fd78bd44b2d6..db261da578f3 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1064,7 +1064,7 @@ struct kvm_x86_ops { void (*hardware_disable)(void); void (*hardware_unsetup)(void); bool (*cpu_has_accelerated_tpr)(void); - bool (*has_emulated_msr)(int index); + bool (*has_emulated_msr)(u32 index); void (*cpuid_update)(struct kvm_vcpu *vcpu); unsigned int vm_size; |