System Environment: -------------------------- Libdrm: (master)2.4.22-16-g51b895041c65f7ec9ecda48e79279dde29258b07 Mesa: (master)1eb7a81f2e43842acd59929ce65db2142b69134d Xserver: (master)xorg-server-1.9.0-330-g4e0f8f666e61390206c42ad2087477a912525bc7 Xf86_video_intel: (master)2.13.901-5-g0bb135c40e5ac1bf7593ec1d68d2815cbf47aa25 Bug detailed description: ------------------------- This bug hapens on Piketon. Many test suite piglit(3+ cases hang), OGLC(78+ cases hang) I'm using following tests to do the bisection: ./piglit-run.py -t "texturing/tex3d" tests/all.tests result dmesg show: [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... render ring idle [waiting on 18017, at 18017], missed IRQ? [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... render ring idle [waiting on 18638, at 18638], missed IRQ? [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... render ring idle [waiting on 20270, at 20270], missed IRQ? The manual bisection shows this is issue is introduced by following kernel commit: commit 88f23b8fa3e6357c423af24ec31c661fc12f884b 160b1543cdae83e9f8914ac7afc3d2bd686140af Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Sun Dec 5 15:08:31 2010 +0000 drm/i915: Avoid using PIPE_CONTROL on Ironlake The workaround is hideous and we are using the STORE_DWORD on all other generations on all other rings, so use for the gen5 render ring as well. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
commit c56bd04f97d9c01ab15348453ffec753cb621d78 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Wed Dec 15 09:56:50 2010 +0000 Revert "drm/i915: Avoid using PIPE_CONTROL on Ironlake" Restore PIPE_CONTROL once again just for Ironlake, as it appears that MI_USER_INTERRUPT does have the same coherency guarantees, that is the interrupt following a GPU write will arrive after the write is coherent from the CPU, as it does on the other generations. Reported-by: Zhenyu Wang <zhenyuw@linux.intel.com> Reported-by: Shuang He <shuang.he@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32402 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Rewrote the changelog: b84e3cbc7eed896714e9f813204ded6e34e24715.
Verified with Kernel:(drm-intel-next)9c04f015ebc2cc2cca5a4a576deb82a311578edc.
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