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KVM: x86: Return -ENOENT on unimplemented MSRs

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When we find an MSR that we can not handle, bubble up that error code as
MSR error return code. Follow up patches will use that to expose the fact
that an MSR is not handled by KVM to user space.

Suggested-by: Aaron Lewis <aaronlewis@google.com>
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20200925143422.21718-2-graf@amazon.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alexander Graf 2020-09-25 16:34:15 +02:00 committed by Paolo Bonzini
parent 802145c56a
commit 90218e434c
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/x86.c
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@ -272,7 +272,7 @@ static int kvm_msr_ignored_check(struct kvm_vcpu *vcpu, u32 msr,
} else {
vcpu_debug_ratelimited(vcpu, "unhandled %s: 0x%x data 0x%llx\n",
op, msr, data);
return 1;
return -ENOENT;
}
}