From owner-cvs-all Tue Mar 6 19:24:31 2001 Delivered-To: cvs-all@freebsd.org Received: from mobile.wemm.org (c1315225-a.plstn1.sfba.home.com [65.0.135.147]) by hub.freebsd.org (Postfix) with ESMTP id 781DC37B718; Tue, 6 Mar 2001 19:24:26 -0800 (PST) (envelope-from peter@netplex.com.au) Received: from netplex.com.au (localhost [127.0.0.1]) by mobile.wemm.org (8.11.1/8.11.1) with ESMTP id f273OQh71254; Tue, 6 Mar 2001 19:24:26 -0800 (PST) (envelope-from peter@netplex.com.au) Message-Id: <200103070324.f273OQh71254@mobile.wemm.org> X-Mailer: exmh version 2.2 06/23/2000 with nmh-1.0.4 To: John Baldwin Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/alpha/alpha pmap.c src/sys/i386/i386 pma In-Reply-To: Date: Tue, 06 Mar 2001 19:24:26 -0800 From: Peter Wemm Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG John Baldwin wrote: > > On 07-Mar-01 John Baldwin wrote: > > > > On 07-Mar-01 John Baldwin wrote: > >> jhb 2001/03/06 17:04:18 PST > >> > >> Modified files: > >> sys/alpha/alpha pmap.c > >> sys/i386/i386 pmap.c > >> sys/ia64/ia64 pmap.c > >> sys/vm vm_page.c pmap.h > >> Log: > >> Back out the pmap_map() change for now, it isn't completely stable on th e > >> i386. > > > > I was getting some very weird kernel panics on my SMP x86 test box. Usuall y > > triggered by staying in vi for "a while". This still needs to go in in som e > > form or another, but the x86 side of it isn't quite all there yet it seems. > > The panics I saw were usually kernel page faults that made no sense. David > > O`Brien also reported a kernel segment not present panic, so I'm pretty sur e > > these changes are the guilty ones. :-/ > > Well, David's panic was a red herring, he hadn't updated to this code yet, so > AFAIK I'm the only one with weird panics with this code. FWIW, I didn't have > problems on my UP laptop, but my SMP testbox was the one blowing up. I stuck some printf's in and recorded the i386 va/pa and the various pmap_map() calls and results, and it is identical before and after this change. This is therefore a red herring.. there is no detectable runtime VM layout change as a result of this patch, except possibly some code / data alignment changes due to different code being compiled. Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message