On Tue, Apr 09, 2013 at 06:32:45PM -0300, Rodrigo Vivi wrote: > According to SNB GT PM Programming Guide page 9, > Write Min Frequency Table is 09h I think this is the winner of what workarounds the hang... (Since patch 3 is a no-op, patch 1 still reverts a change to the media turbo mode requested by VPG.) The original code for this patch is correct, I have in the bspec: 0x8 WRITE_MIN_FREQ_TABLE 0x9 READ_MIN_FREQ_TABLE So the effect of this patch is to undo the ring/uncore scaling with GPU frequency which will slow everything down and is less likely to provoke uncore death. -Chris -- Chris Wilson, Intel Open Source Technology Centre
