Re: [PATCH] KVM: SVM: Explicitly require FLUSHBYASID to enable SEV support

[Sean Christopherson]

On Wed, 18 Oct 2023 12:36:17 -0700, Sean Christopherson wrote:
> Add a sanity check that FLUSHBYASID is available if SEV is supported in
> hardware, as SEV (and beyond) guests are bound to a single ASID, i.e. KVM
> can't "flush" by assigning a new, fresh ASID to the guest.  If FLUSHBYASID
> isn't supported for some bizarre reason, KVM would completely fail to do
> TLB flushes for SEV+ guests (see pre_svm_run() and pre_sev_run()).
> 
> 
> [...]

Applied to kvm-x86 svm, thanks!

[1/1] KVM: SVM: Explicitly require FLUSHBYASID to enable SEV support
      https://github.com/kvm-x86/linux/commit/770d6aa2e416

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