Chris Wilson e22d8e3c69 drm/i915: Treat WC a separate cache domain ... When discussing a new WC mmap, we based the interface upon the assumption that GTT was fully coherent. How naive! Commits 3b5724d702 ("drm/i915: Wait for writes through the GTT to land before reading back") and ed4596ea99 ("drm/i915/guc: WA to address the Ringbuffer coherency issue") demonstrate that writes through the GTT are indeed delayed and may be overtaken by direct WC access. To be safe, if userspace is mixing WC mmaps with other potential GTT access (pwrite, GTT mmaps) it should use set_domain(WC). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96563 Testcase: igt/gem_pwrite/small-gtt* Testcase: igt/drv_selftest/coherency Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170412110111.26626-2-chris@chris-wilson.co.uk		2017-04-12 12:35:17 +01:00
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asm-generic	generic syscalls: Wire up statx syscall	2017-03-20 12:32:37 +00:00
drm	drm/i915: Treat WC a separate cache domain	2017-04-12 12:35:17 +01:00
linux	Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-04-11 07:41:10 +10:00
misc
mtd
rdma	uapi: fix rdma/mlx5-abi.h userspace compilation errors	2017-03-24 22:01:35 -04:00
scsi	scsi: cxlflash: Support SQ Command Mode	2017-01-11 22:38:15 -05:00
sound	Merge remote-tracking branches 'asoc/topic/tlv320aic31xx', 'asoc/topic/topology', 'asoc/topic/uda1380', 'asoc/topic/wm2200' and 'asoc/topic/wm8523' into asoc-next	2016-12-12 15:53:25 +00:00
video
xen	xen/privcmd: add IOCTL_PRIVCMD_RESTRICT	2017-02-14 15:14:59 -05:00
Kbuild