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| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-11-18 12:23:00 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-11-21 09:59:31 +0100 |
| commit | edef5c36b0c7f07ab4926f6c9e50731f3772c79d (patch) | |
| tree | fd52ae76a55a249dcc0a1c7b5b2afa2cb173d93d /arch/x86/kvm/x86.c | |
| parent | de1fca5d6e0105c9d33924e1247e2f386efc3ece (diff) | |
| download | lwn-edef5c36b0c7f07ab4926f6c9e50731f3772c79d.tar.gz lwn-edef5c36b0c7f07ab4926f6c9e50731f3772c79d.zip | |
KVM: x86: implement MSR_IA32_TSX_CTRL effect on CPUID
Because KVM always emulates CPUID, the CPUID clear bit
(bit 1) of MSR_IA32_TSX_CTRL must be emulated "manually"
by the hypervisor when performing said emulation.
Right now neither kvm-intel.ko nor kvm-amd.ko implement
MSR_IA32_TSX_CTRL but this will change in the next patch.
Reviewed-by: Jim Mattson <jmattson@google.com>
Tested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 02863998af91..648e84e728fc 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1484,8 +1484,8 @@ static int __kvm_set_msr(struct kvm_vcpu *vcpu, u32 index, u64 data, * Returns 0 on success, non-0 otherwise. * Assumes vcpu_load() was already called. */ -static int __kvm_get_msr(struct kvm_vcpu *vcpu, u32 index, u64 *data, - bool host_initiated) +int __kvm_get_msr(struct kvm_vcpu *vcpu, u32 index, u64 *data, + bool host_initiated) { struct msr_data msr; int ret; |