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HV: allow write 0 to MSR_IA32_MCG_STATUS

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Per SDM, writing 0 to MSR_IA32_MCG_STATUS is allowed, HV should not
return -EACCES on this case;

Tracked-On: #3454

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Victor Sun 2019-07-23 09:54:14 +08:00 committed by ACRN System Integration
parent 3cf1daa480
commit a7b6fc74e5
1 changed files with 7 additions and 1 deletions
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8
hypervisor/arch/x86/guest/vmsr.c
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@ -635,8 +635,14 @@ int32_t wrmsr_vmexit_handler(struct acrn_vcpu *vcpu)
err = vlapic_set_apicbase(vcpu_vlapic(vcpu), v);
break;
}
case MSR_IA32_MCG_CAP:
case MSR_IA32_MCG_STATUS:
{
if (v != 0U) {
err = -EACCES;
}
break;
}
case MSR_IA32_MCG_CAP:
case MSR_IA32_FEATURE_CONTROL:
case MSR_IA32_SGXLEPUBKEYHASH0:
case MSR_IA32_SGXLEPUBKEYHASH1: