Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754905AbYGGLJS (ORCPT ); Mon, 7 Jul 2008 07:09:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752742AbYGGLJE (ORCPT ); Mon, 7 Jul 2008 07:09:04 -0400 Received: from an-out-0708.google.com ([209.85.132.250]:3086 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752648AbYGGLJD (ORCPT ); Mon, 7 Jul 2008 07:09:03 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=s3wBskvFJ0kPPGFBaTPfOblEFTVcCFCL31ekVucxQEyotocDrqgueMXS8fE6MvtJ/d EvgkTKk31w3nI3TxPl/ctl5BUjzuM1cQf9obGVLF+wwaHNsvaXcKTdGCpFTUAVN22rxw EuZef/i+xqIdb1B82VioBZtSNqc18nnx4lwAQ= Message-ID: <6e0cfd1d0807070408ybea080ewa75ed1f1a8f9326c@mail.gmail.com> Date: Mon, 7 Jul 2008 13:08:53 +0200 From: "Martin Schwidefsky" To: "Hugh Dickins" Subject: Re: Lockless/Get_User_Pages_Fast causes Xorg 1.4.99.* to lock Cc: "Nick Piggin" , benh@kernel.crashing.org, cotte@de.ibm.com, "Zan Lynx" , "Ryan Hope" , LKML , "Andrew Morton" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <48f7fe350807032326l1d68c94l531e44c09693b989@mail.gmail.com> <486E4FD8.4010102@acm.org> <200807071806.11630.nickpiggin@yahoo.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1191 Lines: 31 On Mon, Jul 7, 2008 at 12:39 PM, Hugh Dickins wrote: > On Mon, 7 Jul 2008, Nick Piggin wrote: >> >> I think we need a similar fix for s390 too. If so, then it really should >> get into 2.6.26, but this late in the release, I hope an s390 maintainer >> might be able to test and verify the fix? > > Wow, yes, I hadn't realized s390 is ahead of the game there: glad you're > back to spot that. But yes, we'd prefer maintainer to confirm and push. > > > [PATCH]] s390: protect _PAGE_SPECIAL bit against mprotect > > Stop mprotect's pte_modify from wiping out the s390 pte_special bit, which > caused oops thereafter when vm_normal_page thought X's abnormal was normal. > > Signed-off-by: Nick Piggin > Acked-by: Hugh Dickins s390 will definitely need this. Loosing the pte special bit is not good. I'll prepate a please pull right away. Thanks of pointing this out. -- blue skies, Martin -- 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/