Re: [Intel-gfx] [PATCH v2] drm/i915/bxt: map GTT as uncached

2015-03-30 Thread Antti Koskipää
Reviewed-by: Antti Koskipää On 03/27/2015 01:07 PM, Imre Deak wrote: > On Broxton per specification the GTT has to be mapped as uncached. > This was caught by the PTE write readback warning, which showed a > corrupted PTE value with using the current write-combine mapping. > > v2: > - add commen

[Intel-gfx] [PATCH v2] drm/i915/bxt: map GTT as uncached

2015-03-27 Thread Imre Deak
On Broxton per specification the GTT has to be mapped as uncached. This was caught by the PTE write readback warning, which showed a corrupted PTE value with using the current write-combine mapping. v2: - add comment explaining how the problem with WC mapping manifests (Daniel) Signed-off-by: I