drm/i915: Allow MI_LOAD_REGISTER_REG between whitelisted registers.
Allowing register copies where the source and destination are both whitelisted should be safe, and is useful. For example, Mesa uses this to load the command streamer math registers with data from the pipeline statistics counters. v2: Reject writes to OACONTROL (and reads as well :( Signed-off-by: NKenneth Graunke <kenneth@whitecape.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> # v1 Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1462521014-13595-1-git-send-email-chris@chris-wilson.co.uk
Showing
想要评论请 注册 或 登录