From: Marcelo Tosatti <marcelo.tosatti@cyclades•com>
To: Dan Malek <dan@embeddededge•com>
Cc: linux-ppc-embedded <linuxppc-embedded@ozlabs•org>
Subject: Re: [PATCH] 8xx: tlbie debugging aid (try #2)
Date: Mon, 27 Jun 2005 11:56:03 -0300 [thread overview]
Message-ID: <20050627145603.GB9810@logos.cnet> (raw)
In-Reply-To: <014331894c585b85c6bb419d72110125@embeddededge.com>
Hi Dan,
On Mon, Jun 27, 2005 at 04:18:14PM -0400, Dan Malek wrote:
>
> On Jun 27, 2005, at 10:28 AM, Marcelo Tosatti wrote:
>
> >it yields
> >
> >_tlbie on pinned range: c0000000-c1800000
> >Badness in _tlbie at arch/ppc/mm/pgtable.c:527
> >Call trace:
> > [c0005530] dump_stack+0x18/0x28
> > [c0003628] check_bug_trap+0x84/0xac
> > [c00037b0] ProgramCheckException+0x160/0x1a0
> > [c0002d50] ret_from_except_full+0x0/0x4c
> > [c000a91c] _tlbie+0x94/0xa0
> > [c902f018] alloc_init_module+0x18/0x40 [alloc]
> > [c002c4ac] sys_init_module+0x224/0x324
> > [c00026f0] ret_from_syscall+0x0/0x44
Note: this was just a test module doing tlbie(0xc0000100)...
Hum, it should also print out the address in question...
> How much real memory on your board?
128M
> We need to ensure VMALLOC_START is beyond
> the pinned entries.
Right now VMALLOC_START is before the IMMR pinned space.
> We should make all of the code
> much smarter to pin on the real space that is on
> the board.
Oh! What are the side effects of such pinning as the
code is today?
The only issue I see with pinning virtual address translations
farther the the physical addresses (real space) is that we lose
some virtual space, but nothing more than that.
Is it only that?
> For testing now, just make VMALLOC_OFFSET
> 32M, which will push the start to the 32M boundary
> after the kernel.
For what purpose? Sorry I don't get you, please be more
verbose.
next prev parent reply other threads:[~2005-06-27 20:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-25 14:53 [PATCH] 8xx: map_page() skip pinned region and tlbie debugging aid Marcelo Tosatti
2005-06-25 22:24 ` Dan Malek
2005-06-26 14:30 ` Marcelo Tosatti
2005-06-27 13:39 ` Marcelo Tosatti
2005-06-27 20:46 ` Dan Malek
2005-06-28 6:30 ` Benjamin Herrenschmidt
2005-06-28 13:42 ` [PATCH] 8xx: get_mmu_context() for (very) FEW_CONTEXTS and KERNEL_PREEMPT race/starvation issue Guillaume Autran
2005-06-29 4:15 ` Benjamin Herrenschmidt
2005-06-29 15:32 ` Guillaume Autran
2005-06-29 15:54 ` Marcelo Tosatti
2005-06-29 21:25 ` Guillaume Autran
2005-06-29 17:00 ` Marcelo Tosatti
2005-06-29 23:26 ` Benjamin Herrenschmidt
2005-06-29 19:38 ` Marcelo Tosatti
2005-06-30 13:54 ` Guillaume Autran
2005-07-05 13:12 ` Guillaume Autran
2005-06-30 0:34 ` Eugene Surovegin
2005-06-29 23:24 ` Benjamin Herrenschmidt
2005-06-28 13:53 ` [PATCH] 8xx: map_page() skip pinned region and tlbie debugging aid Dan Malek
2005-06-28 23:47 ` Benjamin Herrenschmidt
2005-06-29 17:19 ` Marcelo Tosatti
2005-06-29 23:31 ` Benjamin Herrenschmidt
2005-06-30 18:05 ` Dan Malek
2005-06-30 23:29 ` Benjamin Herrenschmidt
2005-07-01 7:01 ` Pantelis Antoniou
2005-06-30 17:49 ` Dan Malek
2005-06-27 14:28 ` [PATCH] 8xx: tlbie debugging aid (try #2) Marcelo Tosatti
2005-06-27 20:18 ` Dan Malek
2005-06-27 14:56 ` Marcelo Tosatti [this message]
2005-06-27 20:53 ` Dan Malek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050627145603.GB9810@logos.cnet \
--to=marcelo.tosatti@cyclades$(echo .)com \
--cc=dan@embeddededge$(echo .)com \
--cc=linuxppc-embedded@ozlabs$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox