[PATCH v3 0/4] KVM: arm64: Fix vcpu->mutex v. kvm->lock inversion

[Marc Zyngier]

On Mon, 27 Mar 2023 16:47:43 +0000, Oliver Upton wrote:
> As it so happens, lock ordering in KVM/arm64 is completely backwards.
> There's a significant amount of VM-wide state that needs to be accessed
> from the context of a vCPU. Until now, this was accomplished by
> acquiring the kvm->lock, but that cannot be nested within vcpu->mutex.
> 
> This series fixes the issue with some fine-grained locking for MP state
> and a new, dedicated mutex that can nest with both kvm->lock and
> vcpu->mutex.
> 
> [...]

Applied to next, thanks!

[1/4] KVM: arm64: Avoid vcpu->mutex v. kvm->lock inversion in CPU_ON
      commit: 0acc7239c20a8401b8968c2adace8f7c9b0295ae
[2/4] KVM: arm64: Avoid lock inversion when setting the VM register width
      commit: c43120afb5c66a3465c7468f5cf9806a26484cde
[3/4] KVM: arm64: Use config_lock to protect data ordered against KVM_RUN
      commit: 4bba7f7def6f278266dadf845da472cfbfed784e
[4/4] KVM: arm64: Use config_lock to protect vgic state
      commit: f00327731131d1b5aa6a1aa9f50bcf8d620ace4c

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.