Messages in this thread | | | Subject | Re: KVM_SET_CPUID doesn't check supported bits (was Re: [PATCH 0/6] KVM: x86: KVM_SET_SREGS.CR4 bug fixes and cleanup) | From | stsp <> | Date | Mon, 7 Dec 2020 17:29:02 +0300 |
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07.12.2020 17:09, Paolo Bonzini пишет: > > > Il lun 7 dic 2020, 15:04 stsp <stsp2@yandex.ru > <mailto:stsp2@yandex.ru>> ha scritto: > > Perhaps it would be good if guest cpuid to > have a default values of KVM_GET_SUPPORTED_CPUID, > so that the user doesn't have to do the needless > calls to just copy host features to guest cpuid. > > > It is too late to change that aspect of the API, unfortunately. We > don't know how various userspaces would behave. Which means some sensible behaviour already exists if I don't call KVM_SET_CPUID2. So what is it, #UD on CPUID? Would be good to have that documented.
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