https://bugs.freedesktop.org/show_bug.cgi?id=94623

Bug ID: 94623 Summary: [AMDGPU][CIK][bisected] drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: shawn.starr@rogers.com

The following commit cause GPU lockup on CIK when starting X:

feebe91aa9a9d99d9ec157612a614fadb79beb99 is the first bad commit commit feebe91aa9a9d99d9ec157612a614fadb79beb99 Author: Christian König christian.koenig@amd.com Date: Fri Feb 26 16:18:15 2016 +0100

drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well

We never ported that back to CIK, so we could run into VM faults here.

Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org

:040000 040000 1229f0ca17d5518c15d64c773303dd494b3c74a8 d31a4da20d5bec8c9a59608b86a928bd06e4cd0b M drivers

When reverting this patch on kernel 4.5 final and Fedora's 4.6-rc0.git sources, no GPU lockup happens anymore.

Bisect history (Starting from 4.5-rc5):

git bisect start # good: [81f70ba233d5f660e1ea5fe23260ee323af5d53a] Linux 4.5-rc5 git bisect good 81f70ba233d5f660e1ea5fe23260ee323af5d53a # bad: [710d60cbf1b312a8075a2158cbfbbd9c66132dcc] Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect bad 710d60cbf1b312a8075a2158cbfbbd9c66132dcc # bad: [7ae9c768e19ec8ce1b397a5c4abf88f9ee053e09] Merge tag 'pm+acpi-4.5-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm git bisect bad 7ae9c768e19ec8ce1b397a5c4abf88f9ee053e09 # good: [f691b77b1fc491dae601631c8531a0a13e915466] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs git bisect good f691b77b1fc491dae601631c8531a0a13e915466 # bad: [848819c5447eb318a787467e8435a07c733e16c9] Merge tag 'imx-drm-fixes-2016-02-19' of git://git.pengutronix.de/git/pza/linux into drm-fixes git bisect bad 848819c5447eb318a787467e8435a07c733e16c9 # bad: [e5322c54068162846fdbac0f0891cd95f37d4c4e] Merge branch 'for-linus2' of git://git.kernel.dk/linux-block git bisect bad e5322c54068162846fdbac0f0891cd95f37d4c4e # good: [da35825d9a091a7a1d5824c8468168e2658333ff] nvme: set queue limits for the admin queue git bisect good da35825d9a091a7a1d5824c8468168e2658333ff # bad: [26bae5e04c3570728787f809b13546a8169fdf95] Merge tag 'drm/tegra/for-4.5-rc7' of git://anongit.freedesktop.org/tegra/linux into drm-fixes git bisect bad 26bae5e04c3570728787f809b13546a8169fdf95 # bad: [89913ea615754163ae9a066c9c1b95aa2a2f51b4] drm/amdgpu/cz: remove commented out call to enable vce pg git bisect bad 89913ea615754163ae9a066c9c1b95aa2a2f51b4 # good: [4ea2efae0d117c5b5f44081bab941542d892e758] drm/amd/powerplay: send event to notify powerplay all modules are initialized. git bisect good 4ea2efae0d117c5b5f44081bab941542d892e758 # bad: [9cac537332f5502c103415b25609548c276a09f8] drm/amdgpu/gfx8: specify which engine to wait before vm flush git bisect bad 9cac537332f5502c103415b25609548c276a09f8 # bad: [feebe91aa9a9d99d9ec157612a614fadb79beb99] drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well git bisect bad feebe91aa9a9d99d9ec157612a614fadb79beb99 # first bad commit: [feebe91aa9a9d99d9ec157612a614fadb79beb99] drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well