kvm/svm: Setup MCG_CAP on AMD properly

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MCG_CAP[63:9] bits are reserved on AMD. However, on an AMD guest, this
MSR returns 0x100010a. More specifically, bit 24 is set, which is simply
wrong. That bit is MCG_SER_P and is present only on Intel. Thus, clean
up the reserved bits in order not to confuse guests.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Borislav Petkov 2017-03-26 23:51:24 +02:00 • committed by Radim Krčmář

parent 1279a6b124

commit 74f169090b

1 changed files with 7 additions and 0 deletions

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arch/x86/kvm/svm.c

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