a694e226fb
DRM_IOCTL_MODE_CURSOR results in frontbuffer flush before the cursor plane MMIOs are written to. But this flush should not be necessary for PSR as hardware tracking triggers PSR exit when MMIOs are written. As for FBC, the spec says "Flips or changes to plane size and panning" cause FBC to be nuked. Use origin == ORIGIN_FLIP so that features can ignore cursor updates in their frontbuffer_flush implementations. /sys/kernel/debug/dri/0/i915_fbc_status shows "Compressing: yes" when I move the cursor around. v3: Use ORIGIN_FLIP now that pin_to_display does not flush frontbuffer. v2: Update comment in i915_gem_object_pin_to_display_plane. (Chris) Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180307033420.3086-2-dhinakaran.pandiyan@intel.com |
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README
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.