Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752852Ab0DLIDt (ORCPT ); Mon, 12 Apr 2010 04:03:49 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:52648 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752403Ab0DLIDs (ORCPT ); Mon, 12 Apr 2010 04:03:48 -0400 Message-ID: <4BC2D345.100@cn.fujitsu.com> Date: Mon, 12 Apr 2010 16:01:09 +0800 From: Xiao Guangrong User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Avi Kivity CC: Marcelo Tosatti , KVM list , LKML Subject: [PATCH 2/6] KVM MMU: fix kvm_mmu_zap_page() and its calling path References: <4BC2D2E2.1030604@cn.fujitsu.com> In-Reply-To: <4BC2D2E2.1030604@cn.fujitsu.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: 1627 Lines: 51 - calculate zapped page number properly in mmu_zap_unsync_children() - calculate freeed page number properly kvm_mmu_change_mmu_pages() - restart list walking if have children page zapped Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index a23ca75..8f4f781 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1483,8 +1483,8 @@ static int mmu_zap_unsync_children(struct kvm *kvm, for_each_sp(pages, sp, parents, i) { kvm_mmu_zap_page(kvm, sp); mmu_pages_clear_parents(&parents); + zapped++; } - zapped += pages.nr; kvm_mmu_pages_init(parent, &parents, &pages); } @@ -1540,7 +1540,7 @@ void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages) page = container_of(kvm->arch.active_mmu_pages.prev, struct kvm_mmu_page, link); - kvm_mmu_zap_page(kvm, page); + used_pages -= kvm_mmu_zap_page(kvm, page); used_pages--; } kvm->arch.n_free_mmu_pages = 0; @@ -1589,7 +1589,8 @@ static void mmu_unshadow(struct kvm *kvm, gfn_t gfn) && !sp->role.invalid) { pgprintk("%s: zap %lx %x\n", __func__, gfn, sp->role.word); - kvm_mmu_zap_page(kvm, sp); + if (kvm_mmu_zap_page(kvm, sp)) + nn = bucket->first; } } } -- 1.6.1.2 -- 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/