From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965673Ab0HFT2o (ORCPT ); Fri, 6 Aug 2010 15:28:44 -0400 Received: from kroah.org ([198.145.64.141]:43607 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965551Ab0HFT2N (ORCPT ); Fri, 6 Aug 2010 15:28:13 -0400 X-Mailbox-Line: From gregkh@clark.site Fri Aug 6 12:21:16 2010 Message-Id: <20100806192116.788958141@clark.site> User-Agent: quilt/0.48-11.2 Date: Fri, 06 Aug 2010 12:20:07 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Xiao Guangrong , Marcelo Tosatti Subject: [26/36] KVM: MMU: flush remote tlbs when overwriting spte with different pfn In-Reply-To: <20100806192649.GA1614@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.34-stable review patch. If anyone has any objections, please let us know. ------------------ From: Xiao Guangrong (cherry picked from commit 91546356d0e550fa23abf7f4b04a903c2855761f) After remove a rmap, we should flush all vcpu's tlb Signed-off-by: Xiao Guangrong Signed-off-by: Marcelo Tosatti Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/mmu.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1901,6 +1901,8 @@ static void mmu_set_spte(struct kvm_vcpu pgprintk("hfn old %lx new %lx\n", spte_to_pfn(*sptep), pfn); rmap_remove(vcpu->kvm, sptep); + __set_spte(sptep, shadow_trap_nonpresent_pte); + kvm_flush_remote_tlbs(vcpu->kvm); } else was_rmapped = 1; }