Re: [RFC PATCH v2 10/11] KVM: selftests: Add tests for virtual enumeration/mitigation MSRs

From: Liu, Jingqi
Date: Mon May 22 2023 - 05:40:10 EST


On 4/14/2023 2:25 PM, Chao Gao wrote:
Three virtual MSRs added for guest to report the usage of software
Seems it's better like below.
s/Three virtual MSRs added/Add three virtual MSRs ?
mitigations. They are enumerated in an architectural way. Try to
access the three MSRs to ensure the behavior is expected:
Specifically,

1. below three cases should cause #GP:
* access to a non-present MSR
* write to read-only MSRs
* toggling reserved bit of a writeable MSR

2. rdmsr/wrmsr in other cases should succeed

3. rdmsr should return the value last written

Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
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Thanks,
Jingqi