From: Marek Szyprowski <m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
To: Hiroshi Doyu <hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
arnd-r2nGTMty4D4@public.gmane.org,
linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
chunsang.jeong-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
vdumpa-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
subashrp-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
pullip.cho-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [v4 0/4] ARM: dma-mapping: IOMMU atomic allocation
Date: Tue, 28 Aug 2012 18:51:00 +0200 [thread overview]
Message-ID: <503CF6F4.7060702@samsung.com> (raw)
In-Reply-To: <1346130784-23571-1-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Hello,
On 8/28/2012 7:13 AM, Hiroshi Doyu wrote:
> The commit e9da6e9 "ARM: dma-mapping: remove custom consistent dma
> region" breaks the compatibility with existing drivers. This causes
> the following kernel oops(*1). That driver has called dma_pool_alloc()
> to allocate memory from the interrupt context, and it hits
> BUG_ON(in_interrpt()) in "get_vm_area_caller()". This patch seris
> fixes this problem with making use of the pre-allocate atomic memory
> pool which DMA is using in the same way as DMA does now.
>
> Any comment would be really appreciated.
Looks fine now. I will do some tests and apply them to my fixes-for-3.6
branch. Thanks for Your contribution!
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
prev parent reply other threads:[~2012-08-28 16:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-28 5:13 [v4 0/4] ARM: dma-mapping: IOMMU atomic allocation Hiroshi Doyu
2012-08-28 5:13 ` [v4 1/4] ARM: dma-mapping: atomic_pool with struct page **pages Hiroshi Doyu
2012-08-28 5:13 ` [v4 2/4] ARM: dma-mapping: Refactor out to introduce __in_atomic_pool Hiroshi Doyu
2012-08-28 5:13 ` [v4 4/4] ARM: dma-mapping: IOMMU allocates pages from atomic_pool with GFP_ATOMIC Hiroshi Doyu
[not found] ` <1346130784-23571-1-git-send-email-hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-08-28 5:13 ` [v4 3/4] ARM: dma-mapping: Introduce __atomic_get_pages() for __iommu_get_pages() Hiroshi Doyu
2012-08-28 16:51 ` Marek Szyprowski [this message]
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=503CF6F4.7060702@samsung.com \
--to=m.szyprowski-sze3o3uu22jbdgjk7y7tuq@public.gmane.org \
--cc=arnd-r2nGTMty4D4@public.gmane.org \
--cc=chunsang.jeong-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org \
--cc=konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org \
--cc=kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org \
--cc=linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org \
--cc=linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org \
--cc=linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=pullip.cho-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org \
--cc=subashrp-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=vdumpa-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).