Re: [PATCH] KVM: SVM: WARN, but continue, if misc_cg_set_capacity() fails

From: Sean Christopherson
Date: Tue Jun 13 2023 - 19:23:45 EST


On Tue, 06 Jun 2023 17:44:49 -0700, Sean Christopherson wrote:
> WARN and continue if misc_cg_set_capacity() fails, as the only scenario
> in which it can fail is if the specified resource is invalid, which should
> never happen when CONFIG_KVM_AMD_SEV=y. Deliberately not bailing "fixes"
> a theoretical bug where KVM would leak the ASID bitmaps on failure, which
> again can't happen.
>
> If the impossible should happen, the end result is effectively the same
> with respect to SEV and SEV-ES (they are unusable), while continuing on
> has the advantage of letting KVM load, i.e. userspace can still run
> non-SEV guests.
>
> [...]

Applied to kvm-x86 svm, thanks!

[1/1] KVM: SVM: WARN, but continue, if misc_cg_set_capacity() fails
https://github.com/kvm-x86/linux/commit/106ed2cad9f7

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https://github.com/kvm-x86/linux/tree/fixes