| Message ID | 20230928185128.824140-2-jmattson@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,1/3] KVM: x86: Allow HWCR.McStatusWrEn to be cleared once set | expand |
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9f18b06bbda6..1a323cae219c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3701,12 +3701,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) data &= ~(u64)0x8; /* ignore TLB cache disable */ /* Handle McStatusWrEn */ - if (data == BIT_ULL(18)) { - vcpu->arch.msr_hwcr = data; - } else if (data != 0) { + if (data & ~BIT_ULL(18)) { kvm_pr_unimpl_wrmsr(vcpu, msr, data); return 1; } + vcpu->arch.msr_hwcr = data; break; case MSR_FAM10H_MMIO_CONF_BASE: if (data != 0) {
When HWCR is set to 0, store 0 in vcpu->arch.msr_hwcr. Fixes: 191c8137a939 ("x86/kvm: Implement HWCR support") Signed-off-by: Jim Mattson <jmattson@google.com> --- arch/x86/kvm/x86.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)