* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
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From: bugzilla-daemon @ 2016-10-24 18:59 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #1 from Armin K <krejzi@email.com> ---
Created attachment 127521
--> https://bugs.freedesktop.org/attachment.cgi?id=127521&action=edit
config
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
2016-10-24 18:59 ` bugzilla-daemon
@ 2016-10-25 0:55 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #2 from Michel Dänzer <michel@daenzer.net> ---
This looks like a build system / configuration / setup issue, not an amdgpu (or
even ttm) bug.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
2016-10-24 18:59 ` bugzilla-daemon
2016-10-25 0:55 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
Christian König <deathsimple@vodafone.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #3 from Christian König <deathsimple@vodafone.de> ---
Yeah, from the missing symbols I would guess that TTM was compiled with a
different config than the rest of the kernel.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
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2016-10-25 7:54 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #4 from Armin K <krejzi@email.com> ---
Well, the same config worked in pre 4.9-rc1 drm-next. The module and kernel
were compiled together. However, this config is, and always has been, building
amdgpu/ttm as a module, and the rest of the drivers (very minimal set, tied to
this machine only) as built-in.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
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From: bugzilla-daemon @ 2016-10-26 18:02 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
Can you bisect? I can't reproduce this and there haven't been any changes to
ttm that would cause anything like this that I can see.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #6 from Armin K <krejzi@email.com> ---
Might be changes to KConfig and deps handling.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
` (5 preceding siblings ...)
2016-10-26 18:03 ` bugzilla-daemon
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2016-11-15 3:26 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-11-15 3:01 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #7 from Adam J. Richter <adam_richter2004@yahoo.com> ---
Agreeing with the previous comments that this is probably not a TTM problem, I
want to pass along that I have observed what is probably the same problem, but
with many kernel modules unrelated to TTM and graphics.
I think it might be possible to work around the problem by disabling
CONFIG_MODVERSIONS, but just have not had the time to try that yet.
I suspect that this has something to do with the changes in symbol exports that
occurred in linux 4.9-rc1, which you can see if you do something like:
diff -pruN linux-{4.8,4.9-rc1}/arch/x86/lib
The symbols that I have had trouble with, such as memset, are ones that have
had export declarations added to assembler sources (.S files). I see that the
entry for memset in the generated file Module.symvers is different.
In Linux 4.8, it looks like this:
0xfb578fc5 memset vmlinux EXPORT_SYMBOL
In Linux 4.9-rc1, it looks like this:
0x00000000 memset vmlinux EXPORT_SYMBOL
As you can see, the first field, which I believe is some sort of checksum of
the C function declaration, is all zeroes for memset in Linux 4.9-rc1.
I am still looking into this, but I am posting now because I may need to set
this task aside for a day or two and didn't want to delay in passing along
information that I think might be helpful in resolving your problem.
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
` (6 preceding siblings ...)
2016-11-15 3:01 ` bugzilla-daemon
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2019-11-19 8:11 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-11-15 3:26 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
--- Comment #8 from Adam J. Richter <adam_richter2004@yahoo.com> ---
FYI, here is a very readable document that explains how kernel symbol
versioning is implemented:
http://tldp.org/HOWTO/Module-HOWTO/basekerncompat.html .
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* [Bug 98417] TTM broken on 4.9-rc2
2016-10-24 18:58 [Bug 98417] TTM broken on 4.9-rc2 bugzilla-daemon
` (7 preceding siblings ...)
2016-11-15 3:26 ` bugzilla-daemon
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From: bugzilla-daemon @ 2019-11-19 8:11 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=98417
Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |MOVED
Status|NEEDINFO |RESOLVED
--- Comment #9 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/112.
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