KVM: VMX: Heed the 'msr' argument in msr_write_intercepted()

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[ Upstream commit 020dac4187 ]

Regardless of the 'msr' argument passed to the VMX version of
msr_write_intercepted(), the function always checks to see if a
specific MSR (IA32_SPEC_CTRL) is intercepted for write.  This behavior
seems unintentional and unexpected.

Modify the function so that it checks to see if the provided 'msr'
index is intercepted for write.

Fixes: 67f4b9969c ("KVM: nVMX: Handle dynamic MSR intercept toggling")
Cc: Sean Christopherson <seanjc@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220810213050.2655000-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Jim Mattson 2022-08-10 14:30:50 -07:00 • committed by Greg Kroah-Hartman

parent 38a6b469bf

commit 5424fd0429

1 changed files with 1 additions and 2 deletions

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arch/x86/kvm/vmx/vmx.c

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