Re: [PATCH 27/28] KVM: x86/mmu: Do remote TLB flush before dropping RCU in TDP MMU resched

[Paolo Bonzini]

On 11/20/21 05:50, Sean Christopherson wrote:
>   	if (need_resched() || rwlock_needbreak(&kvm->mmu_lock)) {
> -		rcu_read_unlock();
> -
>   		if (flush)
>   			kvm_flush_remote_tlbs(kvm);
>   
> +		rcu_read_unlock();
> +

Couldn't this sleep in kvm_make_all_cpus_request, whilst in an RCU 
read-side critical section?

Paolo