Re: [PATCH v2] x86/virt: Silence RCU lockdep splat in emergency virt callback path

[Sean Christopherson]

On Tue, 05 May 2026 04:54:35 +0500, Mikhail Gavrilov wrote:
> x86_virt_invoke_kvm_emergency_callback() reaches rcu_dereference()
> through machine_crash_shutdown() with IRQs disabled but with RCU not
> necessarily watching the crashing CPU, which triggers a suspicious
> RCU usage splat on debug kernels (CONFIG_PROVE_RCU=y) during
> panic/kdump:
> 
>   WARNING: suspicious RCU usage
>   arch/x86/virt/hw.c:52 suspicious rcu_dereference_check() usage!
> 
> [...]

Applied to kvm-x86 fixes, thanks!

[1/1] x86/virt: Silence RCU lockdep splat in emergency virt callback path
      https://github.com/kvm-x86/linux/commit/fff82ea9d900

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