From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752660Ab1ECMdY (ORCPT ); Tue, 3 May 2011 08:33:24 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:63423 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751500Ab1ECMdX (ORCPT >); Tue, 3 May 2011 08:33:23 -0400 Date: Tue, 3 May 2011 08:33:01 -0400 From: Konrad Rzeszutek Wilk To: Linus Torvalds Cc: hpa@zytor.com, yinghai@kernel.org, Stefano Stabellini , Jeremy Fitzhardinge , linux-kernel@vger.kernel.org Subject: [GIT PULL] (xen) stable/bug-fixes-for-rc5 for 2.6.39-rc5. Message-ID: <20110503123301.GA5385@dumpdata.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Source-IP: rcsinet13.oracle.com [148.87.113.125] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090205.4DBFF606.00DD:SCFMA4539811,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please git pull git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/bug-fixes-for-rc5 since git commit 8e10cd74342c7f5ce259cceca36f6eba084f5d58 Linus Torvalds (1) Linux 2.6.39-rc5 The git pull contains two fixes that fix the last remaining issue Linux 2.6.39 not booting with Xen. This particular git pull fixes the bootup regression introduced by "x86-64, mm: Put early page table high" (git commit 4b239f458c229de044d6905c2b0f9fe16ed9e01e). Stefano and Yinghai (author of the regression) have been working on patches fixing this regression when the patch was still in x86/mm-core before the 2.6.39 merge window openned. But we haven't come up with an acceptable general solution yet, so this patchset provides a workaround for the problem. There are couple of ways of fixing this: - use pvops hooks: http://marc.info/?i=1302607192-21355-2-git-send-email-stefano.stabellini@eu.citrix.com - have a workaround in Xen MMU's early bootup code (which is what this git pull has). - or remove the patch introducing the regression altogether. Foremost important is to fix the regression, and the patches in the GIT pull achieve that. I want to remove this workaround patch when we hammer out more appropriate semantics for the page table creation - but that will take some time and the runway to do that in 2.6.39 is gone. Hence asking for these two patches to be pulled. Konrad Rzeszutek Wilk (1): xen/mmu: Add workaround "x86-64, mm: Put early page table high" Stefano Stabellini (1): xen: mask_rw_pte mark RO all pagetable pages up to pgt_buf_top arch/x86/xen/mmu.c | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 124 insertions(+), 1 deletions(-)