Messages in this thread | | | Date | Tue, 6 Jun 2023 17:08:32 +0800 | From | Chao Gao <> | Subject | Re: [PATCH v3 10/21] KVM:x86: Add #CP support in guest exception classification |
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On Thu, May 11, 2023 at 12:08:46AM -0400, Yang Weijiang wrote: >Add handling for Control Protection (#CP) exceptions(vector 21). >The new vector is introduced for Intel's Control-Flow Enforcement >Technology (CET) relevant violation cases. >
>Although #CP belongs contributory exception class, but the actual >effect is conditional on CET being exposed to guest. If CET is not >available to guest, #CP falls back to non-contributory and doesn't >have an error code.
This sounds weird. is this the hardware behavior? If yes, could you point us to where this behavior is documented?
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