| Date | Thu, 24 Feb 2022 17:08:23 +0800 | Subject | Re: [PATCHv2 29/29] Documentation/x86: Document TDX kernel architecture | From | Xiaoyao Li <> |
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On 1/24/2022 11:02 PM, Kirill A. Shutemov wrote:
> +#VE due to CPUID instruction > +---------------------------- > + > +In TDX guests, most of CPUID leaf/sub-leaf combinations are virtualized by > +the TDX module while some trigger #VE. Combinations of CPUID leaf/sub-leaf > +which triggers #VE are configured by the VMM during the TD initialization > +time (using TDH.MNG.INIT). > +
The description is incorrect.
TDH.MNG.INIT does not configure whether the CPUID leaf/sub-leaf triggers #VE or not. It configures if some feature bits in specific leaf-subleaf are exposed to TD guest or not.
Whether the CPUID(leaf, sub-leaf) causes #VE or not, is defined in TDX spec, and not configurable by user or VMM.
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