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KVM: Fix guest sysenter on vmx 

The vmx code currently treats the guest's sysenter support msrs as 32-bit
values, which breaks 32-bit compat mode userspace on 64-bit guests.  Fix by
using the native word width of the machine.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-03-06 12:05:53 +02:00
parent ca45aaae1e
commit f5b42c3324
1 changed files with 4 additions and 4 deletions
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8
drivers/kvm/vmx.c
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@ -371,10 +371,10 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
data = vmcs_read32(GUEST_SYSENTER_CS);
break;
case MSR_IA32_SYSENTER_EIP:
data = vmcs_read32(GUEST_SYSENTER_EIP);
data = vmcs_readl(GUEST_SYSENTER_EIP);
break;
case MSR_IA32_SYSENTER_ESP:
data = vmcs_read32(GUEST_SYSENTER_ESP);
data = vmcs_readl(GUEST_SYSENTER_ESP);
break;
default:
msr = find_msr_entry(vcpu, msr_index);
@ -412,10 +412,10 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
vmcs_write32(GUEST_SYSENTER_CS, data);
break;
case MSR_IA32_SYSENTER_EIP:
vmcs_write32(GUEST_SYSENTER_EIP, data);
vmcs_writel(GUEST_SYSENTER_EIP, data);
break;
case MSR_IA32_SYSENTER_ESP:
vmcs_write32(GUEST_SYSENTER_ESP, data);
vmcs_writel(GUEST_SYSENTER_ESP, data);
break;
case MSR_IA32_TIME_STAMP_COUNTER:
guest_write_tsc(data);