From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753461AbaFWLNv (ORCPT ); Mon, 23 Jun 2014 07:13:51 -0400 Received: from fw-tnat.austin.arm.com ([217.140.110.23]:40102 "EHLO collaborate-mta1.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752443AbaFWLNu (ORCPT ); Mon, 23 Jun 2014 07:13:50 -0400 Date: Mon, 23 Jun 2014 12:13:43 +0100 From: Catalin Marinas To: Colin Cross Cc: "linux-arm-kernel@lists.infradead.org" , Will Deacon , "linux-kernel@vger.kernel.org" , Andrew Morton , "stable@vger.kernel.org" Subject: Re: [PATCH] ARM64: implement TASK_SIZE_OF Message-ID: <20140623111343.GC15907@arm.com> References: <1403122209-26352-1-git-send-email-ccross@android.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1403122209-26352-1-git-send-email-ccross@android.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 18, 2014 at 09:10:09PM +0100, Colin Cross wrote: > include/linux/sched.h implements TASK_SIZE_OF as TASK_SIZE if it > is not set by the architecture headers. TASK_SIZE uses the > current task to determine the size of the virtual address space. > On a 64-bit kernel this will cause reading /proc/pid/pagemap of a > 64-bit process from a 32-bit process to return EOF when it reads > past 0xffffffff. > > Implement TASK_SIZE_OF exactly the same as TASK_SIZE with > test_tsk_thread_flag instead of test_thread_flag. > > Cc: stable@vger.kernel.org > Signed-off-by: Colin Cross Thanks. Applied. -- Catalin