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Re: [Xen-devel] [PATCH 8/8] x86/cpuid: Enable CPUID Faulting for the control domain



On 11.09.2019 22:05, Andrew Cooper wrote:
> The domain builder no longer uses CPUID instructions for policy decisions.

How certain are we that there are no other components left relying
on being able to see raw CPUID output in Dom0? Sadly customers are
often doing strange things, insisting that they're right in doing
so. For this reason I wonder whether, at least as a transitional
measure, we should have a command line option allowing to restore
prior behavior.

Jan

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