linux-kernel - Re: [PATCH 20/22] kvm: mmu: NX largepage recovery for TDP MMU

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Message-ID: <aa7752b0-d2d2-f387-602f-fbf3f0edf450@redhat.com>
Date:   Sat, 26 Sep 2020 03:14:54 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Ben Gardon <bgardon@...gle.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     Cannon Matthews <cannonmatthews@...gle.com>,
        Peter Xu <peterx@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Peter Shier <pshier@...gle.com>,
        Peter Feiner <pfeiner@...gle.com>,
        Junaid Shahid <junaids@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        Yulei Zhang <yulei.kernel@...il.com>,
        Wanpeng Li <kernellwp@...il.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Xiao Guangrong <xiaoguangrong.eric@...il.com>
Subject: Re: [PATCH 20/22] kvm: mmu: NX largepage recovery for TDP MMU

On 25/09/20 23:23, Ben Gardon wrote:
> +
> +	if (!kvm->arch.tdp_mmu_enabled)
> +		return err;
> +
> +	err = kvm_vm_create_worker_thread(kvm, kvm_nx_lpage_recovery_worker, 1,
> +			"kvm-nx-lpage-tdp-mmu-recovery",
> +			&kvm->arch.nx_lpage_tdp_mmu_recovery_thread);

Any reason to have two threads?

Paolo