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Only if we allocated the layer and the lower level failed should we remove this layer when unwinding. Otherwise we ignore the overlapping entries by overwriting the old layer with scratch. Fixes:c5d092a429("drm/i915: Remove bitmap tracking for used-pml4") Fixes:e2b763caa6("drm/i915: Remove bitmap tracking for used-pdpes") Reported-by: Matthew Auld <matthew.william.auld@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99947 Testcase: igt/drv_selftest/live_gtt Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.william.auld@gmail.com> Tested-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170227122654.27651-1-chris@chris-wilson.co.uk
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.