KVM: vmx: use MSR_IA32_TSX_CTRL to hard-disable TSX on guest that lack it

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If X86_FEATURE_RTM is disabled, the guest should not be able to access
MSR_IA32_TSX_CTRL.  We can therefore use it in KVM to force all
transactions from the guest to abort.

Tested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Paolo Bonzini 2019-11-18 12:23:01 -05:00

parent c11f83e062

commit b07a5c53d4

1 changed files with 30 additions and 14 deletions

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arch/x86/kvm/vmx/vmx.c

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