KVM: x86: Take an unsigned 32-bit int for has_emulated_msr()'s index

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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>

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Sean Christopherson 2020-02-18 15:40:11 -08:00 • committed by Paolo Bonzini

parent 7cb85fc465

commit cb97c2d680

3 changed files with 3 additions and 3 deletions

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2

arch/x86/include/asm/kvm_host.h

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arch/x86/kvm/svm/svm.c

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2

arch/x86/kvm/vmx/vmx.c

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