From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx <intel-gfx@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, stable@kernel.org
Subject: Re: [PATCH 1/5] io-mapping: ensure io_mapping_map_atomic _is_ atomic
Date: Sat, 17 Sep 2011 21:43:37 +0100 [thread overview]
Message-ID: <e0d58a$1f89q1@orsmga002.jf.intel.com> (raw)
In-Reply-To: <1316285749-30130-2-git-send-email-daniel.vetter@ffwll.ch>
On Sat, 17 Sep 2011 20:55:45 +0200, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> For the !HAVE_ATOMIC_IOMAP case the stub functions did not call
> pagefault_disable/_enable. The i915 driver relies on the map
> actually being atomic, otherwise it can deadlock with it's own
> pagefault handler in the gtt pwrite fastpath.
>
> This is exercised by gem_mmap_gtt from the intel-gpu-toosl gem
> testsuite.
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38115
> Cc: stable@kernel.org
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
next prev parent reply other threads:[~2011-09-17 20:43 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-17 18:55 [PATCH 0/5] Fixup pwrite/pread with gtt mmapped user addresses Daniel Vetter
2011-09-17 18:55 ` [PATCH 1/5] io-mapping: ensure io_mapping_map_atomic _is_ atomic Daniel Vetter
2011-09-17 20:43 ` Chris Wilson [this message]
2011-09-17 18:55 ` [PATCH 2/5] drm/i915: drop KM_USER0 argument to k(un)map_atomic Daniel Vetter
2011-09-17 20:44 ` Chris Wilson
2011-09-23 16:25 ` Daniel Vetter
2011-09-17 18:55 ` [PATCH 3/5] drm/i915: fall through pwrite_gtt_slow to the shmem slow path Daniel Vetter
2011-09-17 20:57 ` Chris Wilson
2011-09-20 11:35 ` Daniel Vetter
2011-10-30 8:35 ` Chris Wilson
2011-09-17 18:55 ` [PATCH 4/5] drm/i915: rewrite shmem_pwrite_slow to use copy_from_user Daniel Vetter
2011-09-17 20:52 ` Daniel Vetter
2011-09-17 21:00 ` Chris Wilson
2011-09-18 8:44 ` Daniel Vetter
2011-09-17 18:55 ` [PATCH 5/5] drm/i915: rewrite shmem_pread_slow to use copy_to_user Daniel Vetter
2011-09-17 21:04 ` Chris Wilson
2011-09-17 23:07 ` [PATCH 0/5] Fixup pwrite/pread with gtt mmapped user addresses Ben Widawsky
2011-10-20 21:14 ` Keith Packard
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='e0d58a$1f89q1@orsmga002.jf.intel.com' \
--to=chris@chris-wilson.co.uk \
--cc=daniel.vetter@ffwll.ch \
--cc=intel-gfx@lists.freedesktop.org \
--cc=stable@kernel.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