From: Michal Simek <monstr@monstr.eu>
To: steve@digidescorp.com
Cc: microblaze-uclinux@itee.uq.edu.au, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] microblaze: Fix pfn_valid() for noMMU
Date: Mon, 16 Nov 2009 11:12:50 +0100 [thread overview]
Message-ID: <4B0125A2.30806@monstr.eu> (raw)
In-Reply-To: <1258150109-6884-1-git-send-email-steve@digidescorp.com>
steve@digidescorp.com wrote:
> Configuring DEBUG_SLAB causes a noMMU kernel to die during initialization
> with an invalid virtual address panic in kfree_debugcheck().
> The panic is due to an improper definition of pfn_valid().
>
> Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Added to next branch.
Thanks,
Michal
> ---
> diff -uprN a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
> --- a/arch/microblaze/include/asm/page.h 2009-09-09 17:13:59.000000000 -0500
> +++ b/arch/microblaze/include/asm/page.h 2009-11-13 15:20:26.000000000 -0600
> @@ -161,7 +161,8 @@ extern int page_is_ram(unsigned long pfn
> # endif /* CONFIG_MMU */
>
> # ifndef CONFIG_MMU
> -# define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) <= max_mapnr)
> +# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && \
> + ((pfn) <= (min_low_pfn + max_mapnr)))
> # define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
> # else /* CONFIG_MMU */
> # define ARCH_PFN_OFFSET (memory_start >> PAGE_SHIFT)
>
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
next prev parent reply other threads:[~2009-11-16 10:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-13 22:08 [PATCH] microblaze: Fix pfn_valid() for noMMU steve
2009-11-16 10:12 ` Michal Simek [this message]
2009-11-16 22:14 ` Andrew Morton
2009-11-17 14:27 ` Steven J. Magnani
2009-11-18 1:37 ` liqin.chen
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=4B0125A2.30806@monstr.eu \
--to=monstr@monstr.eu \
--cc=linux-kernel@vger.kernel.org \
--cc=microblaze-uclinux@itee.uq.edu.au \
--cc=steve@digidescorp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.