From: Ville Syrjälä <ville.syrj...@linux.intel.com> I ran into some kind of fail with VT-d superpage on Geminlake igfx, so without any better ideas let's just disable it.
Additionally Skylake/Broxton igfx have known issues with VT-d superpage as well, so let's disable it there as well. This should let us re-enable frame buffer compression (FBC) for some extra power savings when the display is on. Cc: David Woodhouse <dw...@infradead.org> Cc: Lu Baolu <baolu...@linux.intel.com> Cc: iommu@lists.linux-foundation.org Ville Syrjälä (4): iommu/vt-d: Disable superpage for Geminilake igfx iommu/vt-d: Disable superpage for Broxton igfx iommu/vt-d: Disable superpage for Skylake igfx drm/i915/fbc: Allow FBC + VT-d on SKL/BXT drivers/gpu/drm/i915/display/intel_fbc.c | 16 --------- drivers/iommu/intel/iommu.c | 44 ++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 16 deletions(-) -- 2.31.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
