Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752750Ab0KBJbT (ORCPT ); Tue, 2 Nov 2010 05:31:19 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:57199 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750895Ab0KBJbM (ORCPT ); Tue, 2 Nov 2010 05:31:12 -0400 Message-ID: <4CCFDB67.9050401@cn.fujitsu.com> Date: Tue, 02 Nov 2010 17:35:35 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 MIME-Version: 1.0 To: Gleb Natapov CC: Avi Kivity , Marcelo Tosatti , LKML , KVM Subject: [PATCH v3 5/7] KVM: handle more completed apfs if possible References: <4CCE8143.3090105@cn.fujitsu.com> <4CCE822B.1070909@cn.fujitsu.com> <20101101092457.GY26191@redhat.com> In-Reply-To: <20101101092457.GY26191@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1977 Lines: 62 If it's no need to inject async #PF to PV guest we can handle more completed apfs at one time, so we can retry guest #PF as early as possible Signed-off-by: Xiao Guangrong --- virt/kvm/async_pf.c | 32 ++++++++++++++++---------------- 1 files changed, 16 insertions(+), 16 deletions(-) diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c index 60df9e0..100c66e 100644 --- a/virt/kvm/async_pf.c +++ b/virt/kvm/async_pf.c @@ -124,24 +124,24 @@ void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu) { struct kvm_async_pf *work; - if (list_empty_careful(&vcpu->async_pf.done) || - !kvm_arch_can_inject_async_page_present(vcpu)) - return; - - spin_lock(&vcpu->async_pf.lock); - work = list_first_entry(&vcpu->async_pf.done, typeof(*work), link); - list_del(&work->link); - spin_unlock(&vcpu->async_pf.lock); + while (!list_empty_careful(&vcpu->async_pf.done) && + kvm_arch_can_inject_async_page_present(vcpu)) { + spin_lock(&vcpu->async_pf.lock); + work = list_first_entry(&vcpu->async_pf.done, typeof(*work), + link); + list_del(&work->link); + spin_unlock(&vcpu->async_pf.lock); - if (work->page) - kvm_arch_async_page_ready(vcpu, work); - kvm_arch_async_page_present(vcpu, work); + if (work->page) + kvm_arch_async_page_ready(vcpu, work); + kvm_arch_async_page_present(vcpu, work); - list_del(&work->queue); - vcpu->async_pf.queued--; - if (work->page) - put_page(work->page); - kmem_cache_free(async_pf_cache, work); + list_del(&work->queue); + vcpu->async_pf.queued--; + if (work->page) + put_page(work->page); + kmem_cache_free(async_pf_cache, work); + } } int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/