Re: [PATCH v5 08/34] KVM: SVM: Prevent debugging under SEV-ES

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On 12/14/20 9:41 AM, Paolo Bonzini wrote:
> On 10/12/20 18:09, Tom Lendacky wrote:
>> Additionally, an SEV-ES guest must only and always intercept DR7 reads and
>> writes. Update set_dr_intercepts() and clr_dr_intercepts() to account for
>> this.
> 
> I cannot see it, where is this documented?

That is documented in the GHCB specification, section 4.5 Debug Register
Support:

https://developer.amd.com/wp-content/resources/56421.pdf

Thanks,
Tom

> 
> Paolo
> 



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