[Bug 46161] divide error on radeon modprobe

[Bug 46161] divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Video(Other)                |Video(DRI - non Intel)
         AssignedTo|drivers_video-other@kernel- |drivers_video-dri@kernel-bu
                   |bugs.osdl.org               |gs.osdl.org




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 46161] divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161





--- Comment #1 from Michel Dänzer <michel@daenzer.net>  2012-09-03 14:04:11 ---
(In reply to comment #0)
> This started happening in 3.6-rc1 and is still in rc2. It does happen on 3.5.1
> and 3.5.2 if the radeon module is manually loaded a second time after boot.
So, do I understand this correctly: With 3.5.x it only happens after the radeon
kernel module was loaded a second time, but with 3.6-rc* it even happens after
it was loaded for the first time? If so, can you bisect what introduced the
change in behaviour for 3.6-rc*?

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 46161] divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161





--- Comment #2 from bjackson0971@gmail.com  2012-09-03 19:37:57 ---
You are correct. I just tested 3.4.3 that I still had built and there is no
error with repeated modprobes. I'm trying 3.4.10 to see if the problem started
in 3.4. If it started in 3.5, I will do a few test builds of 3.5-RCx to find
when it started. Then I can maybe try manually reverting any patches that looks
like good candidates before I start a small bisect.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 46161] divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161





--- Comment #3 from bjackson0971@gmail.com  2012-09-03 21:58:07 ---
I had to bisect between 3.4.0 and 3.5-rc1 and this was the result.

416a2bd274566a6f607a271f524b2dc0b84d9106 is the first bad commit
commit 416a2bd274566a6f607a271f524b2dc0b84d9106
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu May 31 19:00:25 2012 -0400

    drm/radeon: fixup tiling group size and backendmap on r6xx-r9xx (v4)

    Tiling group size is always 256bits on r6xx/r7xx/r8xx/9xx. Also fix and
    simplify render backend map. This now properly sets up the backend map
    on r6xx-9xx which should improve 3D performance.

    Vadim benchmarked also:
    Some benchmarks on juniper (5750), fullscreen 1920x1080,
    first result - kernel 3.4.0+ (fb21affa), second - with these patches:

    Lightsmark:   91 fps => 123 fps    +35%
    Doom3:        74 fps => 101 fps    +36%

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

:040000 040000 897f0745cc0845c549d44d172c2949cc92b4777c
4c08505d2b214813be5c65e4b87bb809ff027ce2 M    drivers

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 46161] divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161





--- Comment #4 from bjackson0971@gmail.com  2012-09-03 22:26:31 ---
I tried backing the patch out of 3.6-rc4 (got minor offset and fuzz warnings)
and the problem is gone there too.

If a developer needs help narrowing down a fix to a specific file or line of
code, I can do test builds if I can get patches to apply.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 46161] [BISECTED]divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|divide error on radeon      |[BISECTED]divide error on
                   |modprobe                    |radeon modprobe

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

[Bug 46161] [BISECTED]divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
Can you try a newer kernel, I believe this should be fixed.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

[Bug 46161] [BISECTED]divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161

--- Comment #6 from Brad  Jackson <bjackson0971@gmail.com> ---
It was fixed in one of the releases shortly after I reported it.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

[Bug 46161] [BISECTED]divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

[Bug 46161] [BISECTED]divide error on radeon modprobe

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=46161

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

-- 
You are receiving this mail because:
You are watching the assignee of the bug.