[Bug 102575] [BAT][GDG] igt at gem_mmap_gtt@basic-small-bo-tiledx - fail - Failed assertion: memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102575

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEEDINFO

--- Comment #20 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 78071c2fa53db2f04b8eddc6e6118be4fbc5c2fe (HEAD, upstream/master)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Jun 15 13:44:33 2018 +0100

    igt/gem_tiled_partial_pwrite_pread: Check for known swizzling

    As we want to compare a templated tiling pattern against the target_bo,
    we need to know that the swizzling is compatible. Or else the two
    tiling pattern may differ due to underlying page address that we cannot
    know, and so the test may sporadically fail.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=102575
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Ready for more info on any remaining flip-flops.

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