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KVM: Really fix HV_X64_MSR_APIC_ASSIST_PAGE

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Commit 0945d4b228 tried to fix the get_msr path for the
HV_X64_MSR_APIC_ASSIST_PAGE msr, but was poorly tested.  We should be
returning 0 if the read succeeded, and passing the value back to the
caller via the pdata out argument, not returning the value directly.

Signed-off-by: Mike Waychison <mikew@google.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Mike Waychison 2011-07-23 00:31:45 -07:00 committed by Avi Kivity
parent 14fa67ee95
commit d1613ad5d0
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kvm/x86.c
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@ -1826,7 +1826,8 @@ static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case HV_X64_MSR_TPR:
return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata);
case HV_X64_MSR_APIC_ASSIST_PAGE:
return vcpu->arch.hv_vapic;
data = vcpu->arch.hv_vapic;
break;
default:
pr_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
return 1;