kvm: x86: reads of restricted pv msrs should also result in #GP

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commit 66570e966d ("kvm: x86: only provide PV features if enabled in
guest's CPUID") only protects against disallowed guest writes to KVM
paravirtual msrs, leaving msr reads unchecked. Fix this by enforcing
KVM_CPUID_FEATURES for msr reads as well.

Fixes: 66570e966d ("kvm: x86: only provide PV features if enabled in guest's CPUID")
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20201027231044.655110-4-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Oliver Upton 2020-10-27 16:10:41 -07:00 • committed by Paolo Bonzini

parent cc4cb01767

commit 1930e5ddce

1 changed files with 34 additions and 0 deletions

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arch/x86/kvm/x86.c

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