KVM: svm: writes to MSR_K7_HWCR generates GPE in guest

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Since commit 575203 the MCE subsystem in the Linux kernel for AMD sets bit 18
in MSR_K7_HWCR. Running such a kernel as a guest in KVM on an AMD host results
in a GPE injected into the guest because kvm_set_msr_common returns 1. This
patch fixes this by masking bit 18 from the MSR value desired by the guest.

Signed-off-by: Matthias Lange <matthias.lange@kernkonzept.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Matthias Lange 2014-06-26 13:50:15 +02:00 • committed by Paolo Bonzini

parent 5f7552d4a5

commit 22d48b2d2a

1 changed files with 1 additions and 0 deletions

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arch/x86/kvm/x86.c

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