From: Frank Rowand <frank_rowand@mvista•com>
To: Dan Malek <dan@mvista•com>
Cc: linuxppc-dev <linuxppc-dev@lists•linuxppc.org>
Subject: Re: context overflow
Date: Mon, 22 Jan 2001 17:12:55 -0800 [thread overview]
Message-ID: <3A6CDA97.A9C3FFE2@mvista.com> (raw)
In-Reply-To: 3A68F7A0.693639F1@mvista.com
Dan Malek wrote:
>
> I just heard about the bug Tom Gall fixed in "context_overflow"
> by testing for current->mm == NULL.
>
> I believe the proper solution is to use 'current->active_mm'
> instead of 'current->mm' (and you never get a null pointer).
OK, I've stayed on the side-lines, waiting till I had time to actually
read through the current linuxppc_2_5 source so I would understand
the way things are today. So as I'm going through the messages, from
the beginning, I'm already confused. The only "context_overflow" I
find is mmu_context_overflow() in arch/ppc/mm/init.c. You obviously
aren't talking about the 8xx version of this function. The other
version of the function contains:
for_each_task(tsk) {
if (tsk->mm)
tsk->mm->context = NO_CONTEXT;
}
This is the code we are talking about, correct? The reason I'm
confused is that I was being literal in my reading of "current->mm"
as opposed to "tsk->mm".
Thanks,
Frank
--
Frank Rowand <frank_rowand@mvista•com>
MontaVista Software, Inc
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-01-23 1:12 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-20 2:27 context overflow Dan Malek
2001-01-22 4:28 ` Troy Benjegerdes
2001-01-22 4:39 ` Tom Gall
2001-01-22 18:10 ` Dan Malek
2001-01-22 18:55 ` tom_gall
2001-01-22 19:59 ` Dan Malek
2001-01-22 22:08 ` tom_gall
2001-01-23 0:10 ` Dan Malek
2001-01-23 10:00 ` Gabriel Paubert
2001-01-23 18:21 ` Dan Malek
2001-02-06 10:55 ` Paul Mackerras
2001-02-06 21:11 ` Dan Malek
2001-02-06 21:50 ` Paul Mackerras
2001-02-06 22:29 ` Dan Malek
2001-02-06 22:45 ` Paul Mackerras
2001-02-06 10:50 ` Paul Mackerras
2001-02-06 21:32 ` Dan Malek
2001-02-06 22:08 ` Paul Mackerras
2001-02-06 23:14 ` Dan Malek
2001-02-07 0:23 ` Paul Mackerras
2001-02-07 18:02 ` Dan Malek
2001-02-08 0:48 ` Paul Mackerras
2001-02-08 1:39 ` Frank Rowand
2001-02-08 19:00 ` David Edelsohn
2001-02-08 20:53 ` Roman Zippel
2001-02-08 21:14 ` David Edelsohn
2001-02-08 23:23 ` Roman Zippel
2001-02-08 23:48 ` Cort Dougan
2001-02-08 21:28 ` Cort Dougan
2001-02-08 22:08 ` David Edelsohn
2001-02-08 22:26 ` Cort Dougan
2001-02-08 23:17 ` David Edelsohn
2001-02-08 23:27 ` Cort Dougan
2001-02-08 23:28 ` Gabriel Paubert
2001-02-09 9:58 ` Paul Mackerras
2001-02-09 10:57 ` Gabriel Paubert
2001-02-09 11:26 ` Paul Mackerras
2001-02-09 10:49 ` Paul Mackerras
2001-02-07 9:18 ` Roman Zippel
2001-02-07 17:46 ` Dan Malek
2001-02-07 18:39 ` Roman Zippel
2001-02-07 21:16 ` Gabriel Paubert
2001-02-08 0:34 ` Paul Mackerras
2001-01-22 4:55 ` Larry McVoy
2001-01-22 6:15 ` Troy Benjegerdes
2001-01-23 1:12 ` Frank Rowand [this message]
2001-01-23 1:20 ` Dan Malek
2001-01-23 2:12 ` Frank Rowand
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