From: Avi Kivity Subject: [GIT PULL] KVM fixes for 2.6.30-rc7 Date: Mon, 25 May 2009 20:16:36 +0300 Message-ID: <4A1AD274.6030305@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-kernel , KVM list To: Linus Torvalds Return-path: Received: from mx2.redhat.com ([66.187.237.31]:52105 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751582AbZEYRQj (ORCPT ); Mon, 25 May 2009 13:16:39 -0400 Sender: kvm-owner@vger.kernel.org List-ID: Linus, The upcoming F11 release has uncovered a couple of bugs relating to the reloading to the PDPTRs in PAE guests. While the bugs are not recent regressions, the switch to PAE as a default kernel, coupled with the use of the fancy priority inherited futexes in audio code, cause the bug to start affecting people. Futexes enter into the picture here as their initialization code deliberately writes into the NULL pointer. If the PDPTRs have not been correctly reloaded, this write hits the low kernel mappings, and the write succeeds where the code expects it to fail, disabling the pi futex subsystem. So please pull from git://git.kernel.org/pub/scm/virt/kvm/kvm.git kvm-updates/2.6.30 To get Avi Kivity (2): KVM: Make paravirt tlb flush also reload the PAE PDPTRs KVM: Fix PDPTR reloading on CR4 writes arch/x86/kvm/mmu.c | 3 +-- arch/x86/kvm/x86.c | 6 +++++- 2 files changed, 6 insertions(+), 3 deletions(-) -- error compiling committee.c: too many arguments to function