[Bug 77793] [HSW Bisected full-ppgtt]igt/gem_reloc_vs_gpu/forked-interruptible-faulting-reloc-thrashing fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77793

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #6 from lu hua <huax.lu at intel.com> ---
(In reply to comment #5)
> Please retest with
> 
> commit e6a844687cf929ec053c7578d5ecc794a8a6c5cf
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Mon Aug 11 12:00:12 2014 +0200
> 
>     drm/i915: Force CPU relocations if not GTT mapped

Test on latest nightly kernel.
It works well on HSW.
It still fails on BYT.
output:
root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_reloc_vs_gpu --run-subtest forked-interruptible-faulting-reloc-thrashing
IGT-Version: 1.7-g5a06d36 (x86_64) (Linux:
3.16.0_drm-intel-nightly_cf1dde_20140812+ x86_64)
Test assertion failure function do_test, file gem_reloc_vs_gpu.c:260:
Failed assertion: test == 0xdeadbeef
Last errno: 4, Interrupted system call
mismatch in buffer 13: 0x00000000 instead of 0xdeadbeef
child 2 failed with exit status 99
Subtest forked-interruptible-faulting-reloc-thrashing: FAIL

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