Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH v8 4/4] kvm: vmx: virtualize split lock detection | Date | Wed, 15 Apr 2020 21:47:02 +0200 |
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Xiaoyao Li <xiaoyao.li@intel.com> writes:
> Due to the fact that TEST_CTRL MSR is per-core scope, i.e., the sibling > threads in the same physical CPU core share the same MSR, only > advertising feature split lock detection to guest when SMT is disabled > or unsupported, for simplicitly.
That's not for simplicity. It's for correctness because you cannot provide consistent state to a guest.
Thanks,
tglx
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