Chris Wilson 6bb73b704d drm/i915/gt: Flush before changing register state
commit d5109f739c upstream.

Flush; invalidate; change registers; invalidate; flush.

Will this finally work on every device? Or will Baytrail complain again?

On the positive side, we immediately see the benefit of having hsw-gt1 in
CI.

Fixes: ace44e13e5 ("drm/i915/gt: Clear CACHE_MODE prior to clearing residuals")
Testcase: igt/gem_render_tiled_blits # hsw-gt1
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210125220247.31701-1-chris@chris-wilson.co.uk
(cherry picked from commit d30bbd62b1bfd9e0a33c3583c5a9e5d66f60cbd7)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Diego Calleja <diegocg@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-04 11:38:30 +01:00
2021-02-26 10:14:35 +01:00

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.
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