[Bug 100674] [BAT] [CTG ILK SNB BYT IVB HSW] Failed assertion: reloc.presumed_offset == offset on CI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100674

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 60568210a5616f2961a832fcb2f15daa5be918d1
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Apr 13 16:07:33 2017 +0100

    iget/gem_exec_reloc: Fix simulated relocations

    The contract with the kernel is that the presumed_offset matches the
    value written into the batch. In the case where we were creating a new
    object to simulate the old being relocation, we were writing some other
    value into the batch. It just happens that using GGTT read back on !llc
    was causing the original batch to migrated into the aperture, leaving a
    hole suitable for the new batch, and the kernel could therefore skip the
    relocation (causing us to complain).

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100674
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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