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KVM: VMX: Flush volatile msrs before emulating rdmsr 

Some msrs (notable MSR_KERNEL_GS_BASE) are held in the processor registers
and need to be flushed to the vcpu struture before they can be read.

This fixes cygwin longjmp() failure on Windows x64.

Signed-off-by: Avi Kivity <avi@redhat.com>
wifi-calibration
Avi Kivity 2009-02-15 02:32:07 +02:00
parent 682edb4c01
commit 516a1a7e9d
1 changed files with 1 additions and 0 deletions
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arch/x86/kvm/vmx.c
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@ -903,6 +903,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
data = vmcs_readl(GUEST_SYSENTER_ESP);
break;
default:
vmx_load_host_state(to_vmx(vcpu));
msr = find_msr_entry(to_vmx(vcpu), msr_index);
if (msr) {
data = msr->data;