From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanislav Meduna Subject: Re: [PATCH] mm: fix up a spurious page fault whenever it happens Date: Fri, 24 May 2013 12:28:11 +0200 Message-ID: <519F40BB.1050504@meduna.org> 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> <519D0FF8.5080200@redhat.com> <519D118B.6010306@zytor.com> <519D11BF.5000604@redhat.com> <519DCE2A.4010801@meduna.org> <519E095A.4000105@redhat.com> <519F24DD.5060700@meduna.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: "H. Peter Anvin" , Steven Rostedt , Linus Torvalds , "linux-rt-users@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Thomas Gleixner , Ingo Molnar , the arch/x86 maintainers , Hai Huang To: Rik van Riel Return-path: In-Reply-To: <519F24DD.5060700@meduna.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On 24.05.2013 10:29, Stanislav Meduna wrote: >>>> static inline void __native_flush_tlb_single(unsigned long addr) >>>> { >>>> __flush_tlb(); >>>> } >> >>> I will give it some more testing time. >> >> That is a good idea. > > Still no crash, so this one indeed seems to change things. Take that back, now crashed as well, it just took longer. min_flt of two threads jumped from zero at 1848 (lower prio) and 735993 (higher prio, preempted the first one) respectively, 1.7 seconds hang. -- Stano