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Commit d84f1cff authored by Drew Schmitt's avatar Drew Schmitt Committed by Paolo Bonzini
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KVM: x86: Turbo bits in MSR_PLATFORM_INFO 



Allow userspace to set turbo bits in MSR_PLATFORM_INFO. Previously, only
the CPUID faulting bit was settable. But now any bit in
MSR_PLATFORM_INFO would be settable. This can be used, for example, to
convey frequency information about the platform on which the guest is
running.

Signed-off-by: default avatarDrew Schmitt <dasch@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent ba8e23db

arch/x86/kvm/x86.c

+0 −1
Original line number Diff line number Diff line
@@ -2537,7 +2537,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) 
		break;

	case MSR_PLATFORM_INFO:

		if (!msr_info->host_initiated ||

		    data & ~MSR_PLATFORM_INFO_CPUID_FAULT ||

		    (!(data & MSR_PLATFORM_INFO_CPUID_FAULT) &&

		     cpuid_fault_enabled(vcpu)))

			return 1;