On Thu, Jan 19, 2012 at 10:50:06AM -0800, Eric Anholt wrote: > Older specs claimed this was bit 11, but newer specs and the actual > simulator code say it was bit 12. Regardless, we don't use MI_FLUSH, > or try to enable it any more. > > Signed-off-by: Eric Anholt <eric at anholt.net> I'd like to amend this with the following (on this patch instead of the other, so that ppl actually can find it with git blame): "Furthermore actually setting bit12 results in gpu hangs both on snb and ivb. Ben Widawsky discovered a ppt that claims that both bit12 and bit11 must be set, but that doesn't help either. And last but not least, MI_FLUSH seems to work regardless of the setting of these bits." Eric, Ben, is that ok? -Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
