From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: [parisc-linux] ssm/rsm sequences Date: Thu, 28 Apr 2005 13:54:35 -0700 Message-ID: <1114721675.5022.22.camel@mulgrave> References: <20050428190659.GD10171@colo.lackof.org> <200504281942.j3SJgQvL005780@hiauly1.hia.nrc.ca> <20050428202058.GG10171@colo.lackof.org> Mime-Version: 1.0 Content-Type: text/plain Cc: John David Anglin , PARISC list To: Grant Grundler Return-Path: In-Reply-To: <20050428202058.GG10171@colo.lackof.org> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Thu, 2005-04-28 at 14:20 -0600, Grant Grundler wrote: > That may be why I'm not seeing it more often. > > jejb, any insight here? Yes, but you're not going to like it. For this to show up twice for the same process, we must have done a full tlb flush so often that we've completely cycled around the spaces. This, in turn, looks to be because we have a total screw up in our tlb flushing implementation. What's supposed to happen is that the tlb_gather_mmu() ... tlb_finish_mmu() is supposed simply to say "I promise to flush the tlb when I'm done, so don't actually flush anywhere within, just add the dirty tlbs to the list". Unfortunately, our implementation of tlb_end_vma() meaning either flush this vma or add it to the tlb list seems to flush every time, which is why we do this so often. James _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux