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authorDrew Schmitt <dasch@google.com>2018-08-20 19:32:14 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2018-09-20 00:51:46 +0200
commitd84f1cff9028c00ee870f0293b0c7a3866071dfa (patch)
tree826de97fdedadafccc68102de820da2233801c15 /arch/x86/kvm/x86.c
parentnVMX x86: Check VPID value on vmentry of L2 guests (diff)
downloadlinux-d84f1cff9028c00ee870f0293b0c7a3866071dfa.tar.xz
linux-d84f1cff9028c00ee870f0293b0c7a3866071dfa.zip
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: Drew Schmitt <dasch@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
-rw-r--r--arch/x86/kvm/x86.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5fea53cdc583..e127703e277e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -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;