Messages in this thread | | | Date | Tue, 10 Oct 2023 15:20:02 +0300 | From | José Pekkarinen <> | Subject | Re: [PATCH] kvm/sev: make SEV/SEV-ES asids configurable |
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On 2023-10-10 14:40, Paolo Bonzini wrote: > On 10/10/23 13:35, Greg KH wrote: >> On Tue, Oct 10, 2023 at 01:04:39PM +0300, José Pekkarinen wrote: >>> There are bioses that doesn't allow to configure the >>> number of asids allocated for SEV/SEV-ES, for those >>> cases, the default behaviour allocates all the asids >>> for SEV, leaving no room for SEV-ES to have some fun. > > In addition to what Greg pointed out (and there are many more cases > that have to be checked for errors, including possible overflows), why > is it correct to just ignore what's in CPUID?
I'll check if I can use cpuid info to improve this for v2, I just noticed my cpu advertises sev_es but the kernel doesn't activate it despite of the kvm_amd parameter being set, so I tried to fix it this way, but any comments or ideas for improvement are welcomed.
Thanks!
José.
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