Date: Tue, 06 Mar 2001 19:24:26 -0800 From: Peter Wemm <peter@netplex.com.au> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/alpha/alpha pmap.c src/sys/i386/i386 pma Message-ID: <200103070324.f273OQh71254@mobile.wemm.org> In-Reply-To: <XFMail.010306172239.jhb@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200103070324.f273OQh71254>