Kernel 4.15

AmigaOne X1000 platform specific issues related to Linux only.

Re: Kernel 4.15

Postby tbreeden » Tue Nov 21, 2017 7:32 pm

Could you please test the alpha4 on your AmigaOne X1000? I would like to know if the hardware 3D acceleration works with your Radeon HD 4650.


Hi Christian,

I am not sure of the direct way to look at the hardware capabilities,
but, based on the dragging of big windows and the glxgears display,
it sure seems like:
14.4 OK
15-alpha1 OK
15-alpha2 NO
15-alpha4 NO

Tom
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Re: Kernel 4.15

Postby xeno74 » Wed Nov 22, 2017 9:07 am

tbreeden wrote:
Hi Christian,

I am not sure of the direct way to look at the hardware capabilities,
but, based on the dragging of big windows and the glxgears display,
it sure seems like:
14.4 OK
15-alpha1 OK
15-alpha2 NO
15-alpha4 NO

Tom


Hi Tom,

Thank you for testing. These tests were sufficient to know that the hardware 3D acceleration doesn't work with the alpha2 and higher.

Cheers,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

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Re: Kernel 4.15

Postby xeno74 » Wed Nov 22, 2017 11:10 am

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Re: Kernel 4.15

Postby xeno74 » Wed Nov 22, 2017 3:28 pm



Unfortunately this change isn't the problem. I reverted the following files in the first bad commit (first DRM updates) [1].

Code: Select all
-rw-r--r--    drivers/gpu/drm/radeon/Makefile    5
-rw-r--r--    drivers/gpu/drm/radeon/atombios_dp.c    46
-rw-r--r--    drivers/gpu/drm/radeon/ci_dpm.c    22
-rw-r--r--    drivers/gpu/drm/radeon/ci_dpm.h    1
-rw-r--r--    drivers/gpu/drm/radeon/ci_smc.c    21
-rw-r--r--    drivers/gpu/drm/radeon/cik.c    14
-rw-r--r--    drivers/gpu/drm/radeon/cikd.h    2
-rw-r--r--    drivers/gpu/drm/radeon/r100.c    2
-rw-r--r--    drivers/gpu/drm/radeon/r600_cs.c    2
-rw-r--r--    drivers/gpu/drm/radeon/r600_hdmi.c    2
-rw-r--r--    drivers/gpu/drm/radeon/radeon.h    3
-rw-r--r--    drivers/gpu/drm/radeon/radeon_connectors.c    16
-rw-r--r--    drivers/gpu/drm/radeon/radeon_drv.c    10
-rw-r--r--    drivers/gpu/drm/radeon/radeon_fb.c    4
-rw-r--r--    drivers/gpu/drm/radeon/radeon_kfd.c    870
-rw-r--r--    drivers/gpu/drm/radeon/radeon_kms.c    7
-rw-r--r--    drivers/gpu/drm/radeon/radeon_mode.h    4
-rw-r--r--    drivers/gpu/drm/radeon/radeon_trace.h    2
-rw-r--r--    drivers/gpu/drm/radeon/radeon_ttm.c


After that I compiled the latest git kernel again. Unfortunately I don't have hardware 3D acceleration. That means the bug isn't in these files above but it is somewhere in the first DRM updates.
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Re: Kernel 4.15

Postby xeno74 » Wed Nov 22, 2017 4:59 pm

FYI:

ilia wrote:Is the merge commit really the first bad commit? i.e. both parents of
the merge are good, but the merge commit itself is bad? Or did you do
this manually and therefore didn't go into the merge parents? If so,
I'd recommend doing a proper bisect (search for "git bisect", there
are tons of guides). That will identify the commit that's actually
responsible.

Cheers,

-ilia
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xeno74 wrote:Hi ilia,

I did it manually. If I revert the merge commit then the hardware 3D acceleration works. Is it possible to bisect in the merge commit directly?

Thanks,
Christian


ilia wrote:I thought I covered that...

"I'd recommend doing a proper bisect (search for "git bisect", there
are tons of guides). That will identify the commit that's actually
responsible."

-ilia
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xeno74 wrote:OK, I am bisecting ....

Thanks,
Christian
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Re: Kernel 4.15

Postby xeno74 » Fri Nov 24, 2017 4:36 pm

Hi All,

I bisected today and the first bad commit is: a4dec819c8bba6365eb893a4ca88db4dd1210110 (drm/ttm: Add helper functions to populate/map in one call (v2))

Git bisect log:

Code: Select all
git bisect start

git bisect good 894025f24bd028942da3e602b87d9f7223109b14 (Linux 4.15 alpha1 Mon Nov 13 21:14:07 2017 -0800)

git bisect bad e60e1ee60630cafef5e430c2ae364877e061d980

Output:

Bisecting: 2555 revisions left to test after this (roughly 12 steps)
[5bbcc0f595fadb4cac0eddc4401035ec0bd95b09] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

git bisect good

Output:

Bisecting: 1277 revisions left to test after this (roughly 10 steps)
[9a45ddaaa674aa103cd74a0df9a3f9c2c8fb3124] drm/nouveau/mmu: implement page table cache

git bisect bad

Output:

Bisecting: 638 revisions left to test after this (roughly 9 steps)
[d6c0511300dcff19969844495ba293c4efb50b42] drm/i915/execlists: Distinguish the incomplete context notifies

git bisect bad

Output:

Bisecting: 373 revisions left to test after this (roughly 8 steps)
[ae7617f0ef1820be033eef93859a6bb6174a843f] drm/i915: Allow optimized platform checks

git bisect good

Output:

Bisecting: 186 revisions left to test after this (roughly 8 steps)
[6e2e216fadd80b4280783bb78e543593ebf2cb69] drm/amdgpu:use formal register to trigger hdp invalidate

git bisect bad

Output:

Bisecting: 93 revisions left to test after this (roughly 7 steps)
[b72cf4fca2bb786e20864b5e8755105aa9626fb4] drm/amdgpu: move taking mmap_sem into get_user_pages v2

git bisect bad

Output:

Bisecting: 46 revisions left to test after this (roughly 6 steps)
[c5927537dd5706b17affa8aeea28c7b19c8fbb42] drm/amd: Remove null check before kfree

git bisect bad

Output:

Bisecting: 22 revisions left to test after this (roughly 5 steps)
[e719d5169f75ead3c05329b4125afb67b4f33eba] drm/amd/include: Add hdmi_redriver_set to atomfirmware

git bisect good

Output:

Bisecting: 11 revisions left to test after this (roughly 4 steps)
[925d5d798f465671c6b8011e80c636da46ef1a16] drm/amdgpu/gfx8: apply dynamic cu mask to APUs as well

git bisect bad

Output:

Bisecting: 5 revisions left to test after this (roughly 3 steps)
[db95e2185523ee9d46a13ceee37bffe8442d2e1c] drm/amdgpu: Add debugfs file for VBIOS and version

git bisect bad

Output:

Bisecting: 2 revisions left to test after this (roughly 1 step)
[7405e0dad4c75b33976ddd997513635d7a0204b1] drm/amd/amdgpu: Use new TTM populate/map helper function

CC      drivers/gpu/drm/ttm/ttm_page_alloc.o
drivers/gpu/drm/ttm/ttm_page_alloc.c:923:5: error: redefinition of ‘ttm_populate_and_map_pages’
 int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt)
     ^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/ttm/ttm_page_alloc.c:49:0:
./include/drm/ttm/ttm_page_alloc.h:120:19: note: previous definition of ‘ttm_populate_and_map_pages’ was here
 static inline int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt)
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_page_alloc.c:950:6: error: redefinition of ‘ttm_unmap_and_unpopulate_pages’
 void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt)
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/ttm/ttm_page_alloc.c:49:0:
./include/drm/ttm/ttm_page_alloc.h:125:20: note: previous definition of ‘ttm_unmap_and_unpopulate_pages’ was here
 static inline void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt)

git bisect bad

Output:

Bisecting: 0 revisions left to test after this (roughly 0 steps)
[a4dec819c8bba6365eb893a4ca88db4dd1210110] drm/ttm: Add helper functions to populate/map in one call (v2)

git bisect bad

Output:

a4dec819c8bba6365eb893a4ca88db4dd1210110 is the first bad commit
commit a4dec819c8bba6365eb893a4ca88db4dd1210110
Author: Tom St Denis <tom.stdenis@amd.com>
Date:   Fri Aug 18 10:04:57 2017 -0400

    drm/ttm: Add helper functions to populate/map in one call (v2)
   
    These functions replace a section of common code found
    in radeon/amdgpu drivers (and possibly others) as part
    of the ttm_tt_*populate() callbacks.
   
    v2: squash in fix for sw iommu from Tom
   
    Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
    Reviewed-by: Christian König <christian.koenig@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

:040000 040000 04b995fa3def96d5e983d0d5bc728e00b7617fe9 616ef24927f707cfaeecfc4748630f49b52adb42 M   drivers
:040000 040000 61abf936f7ea760e19c5cef8a214ffada5ea3aeb 595278390bc27db92848ce8aaa255a1201c2af75 M   include


Thanks,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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Re: Kernel 4.15

Postby xeno74 » Fri Nov 24, 2017 11:05 pm

Ilia Mirkin wrote:Do you have SWIOTLB disabled in your .config? Try enabling it to see
if that's the issue.

Looking at your bisect log, you might have incorrectly marked some
revisions. E.g. you had a compile failure, which while isn't "good",
it's also not "bad" -- good and bad are only in reference to the
specific issue you're seeing. In such cases you can run "git bisect
skip" which will mark the commit as "unknown" and pick a different one
to try.

-ilia
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Hi All,

Success!!!!!!!!!! I enabled SWIOTLB and the hardware 3D acceleration works again on my AmigaOne X1000! Fantastic. Thank you very much!

@ilia
Thank you for the hint with git bisect skip.

Cheers,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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Re: Kernel 4.15

Postby xeno74 » Sun Nov 26, 2017 12:45 pm

Hi All,

I compiled the alpha5 of kernel 4.15 for the X5000 and X1000 today.

New:


Download: vmlinux-4.15-alpha5-AmigaOne_X1000_X5000.tar.gz

Image

Please test the alpha5.

Thanks,
Christian
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http://www.supertuxkart-amiga.de

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Re: Kernel 4.15

Postby xeno74 » Mon Nov 27, 2017 3:36 pm

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http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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Re: Kernel 4.15

Postby tbreeden » Mon Nov 27, 2017 10:39 pm

both
vmlinux-4.15-alpha5-AmigaOne_X1000_X5000
and
vmlinux-4.15-rc1-AmigaOne_X1000_X5000

work well on my X1000, Ubuntu 17.04, MATE 1.18.0
and graphics seem to be nicely accelerated!

very good!

tom
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