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[ Upstream commitef7ec41f17] Not all machines have clflush, so don't go assuming they do. Not really sure why the clflush is even here since hwsp is supposed to get snooped I thought. Although in my case we're talking about a i830 machine where render/blitter snooping is definitely busted. But it might work for the hswp perhaps. Haven't really reverse engineered that one fully. Cc: stable@vger.kernel.org Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Fixes:b436a5f8b6("drm/i915/gt: Track all timelines created using the HWSP") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211014090941.12159-2-ville.syrjala@linux.intel.com Reviewed-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.