From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755476Ab3EVSiP (ORCPT ); Wed, 22 May 2013 14:38:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:32938 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751181Ab3EVSiN (ORCPT ); Wed, 22 May 2013 14:38:13 -0400 Message-ID: <519D0FF8.5080200@redhat.com> Date: Wed, 22 May 2013 14:35:36 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Stanislav Meduna CC: Steven Rostedt , Linus Torvalds , "linux-rt-users@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , the arch/x86 maintainers , Hai Huang Subject: Re: [PATCH] mm: fix up a spurious page fault whenever it happens References: <5195ED8B.7060002@meduna.org> <1369183168.6828.168.camel@gandalf.local.home> <519CBB30.3060200@redhat.com> <20130522134111.33a695c5@cuia.bos.redhat.com> <519D08B0.8050707@meduna.org> <1369246316.6828.176.camel@gandalf.local.home> <519D0CAB.7020800@meduna.org> In-Reply-To: <519D0CAB.7020800@meduna.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/22/2013 02:21 PM, Stanislav Meduna wrote: > On 22.05.2013 20:11, Steven Rostedt wrote: > >> Did you apply both patches? Without the first one, this one is >> meaningless. > > Sure. > > BTW, back when I tried to pinpoint it I also tried adding > flush_tlb_page(vma, address) > at the beginning of handle_pte_fault, which as I read should > be basically the same. It did not not change anything. I'm stumped. If the Geode knows how to flush single TLB entries, it should do that when flush_tlb_page is called. If it does not know, it should throw an invalid instruction exception, and not quietly complete the instruction without doing anything.