linux-kernel - Re: [PATCH] KVM: nSVM: Remove a user-triggerable WARN on nested_svm_load

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Message-ID: <176823878206.1368770.15606306361125405997.b4-ty@google.com>
Date: Mon, 12 Jan 2026 09:38:58 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Yosry Ahmed <yosry.ahmed@...ux.dev>
Subject: Re: [PATCH] KVM: nSVM: Remove a user-triggerable WARN on
 nested_svm_load_cr3() succeeding

On Tue, 16 Dec 2025 08:17:54 -0800, Sean Christopherson wrote:
> Drop the WARN in svm_set_nested_state() on nested_svm_load_cr3() failing
> as it is trivially easy to trigger from userspace by modifying CPUID after
> loading CR3.  E.g. modifying the state restoration selftest like so:
> 
>   --- tools/testing/selftests/kvm/x86/state_test.c
>   +++ tools/testing/selftests/kvm/x86/state_test.c
>   @@ -280,7 +280,16 @@ int main(int argc, char *argv[])
> 
> [...]

Applied to kvm-x86 svm, thanks!

[1/1] KVM: nSVM: Remove a user-triggerable WARN on nested_svm_load_cr3() succeeding
      https://github.com/kvm-x86/linux/commit/fc3ba56385d0

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