[Bug 95427] gem_userptr_blits at mlocked-* should skip due to memory pre-condition not met

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jul 29 13:41:21 UTC 2016


https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #4 from cprigent <christophe.prigent at intel.com> ---
(In reply to Emil Velikov from comment #3)
> Guys have you actually looked at the following line ?
> Aperture size is 268435456 MiB -- That is 256 TiB !!!
> 
> That's rather impossible amount if you ask me. So there's either a bug in
> IGT's gem_aperture_size() or one of the two ioctls
> (I915_GEM_CONTEXT_GETPARAM I915_GEM_GET_APERTURE) that it uses.
> 
> With a couple of print statements you should be able to quickly track the
> exact offender. Good luck !

Yes, we saw it. The bug is reported to IGT (not to DRM/Intel). We propose the
test should skip.

I just checked on our IVB platform with 32 GB of memory. Looks like we would
need now 2 TB.

root at IVB102:/opt/X11R7/src/intel-gpu-tools/tests# ./gem_userptr_blits
--run-subtest mlocked-normal-sync
IGT-Version: 1.15-ge3abb20 (x86_64) (Linux: 4.7.0-nightly+ x86_64)
Aperture size is 2048 MiB
Total RAM is 31,945 MiB
Testing unsynchronized mappings...
Testing synchronized mappings...
Killed

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