From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> 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. v2: disable superpage only for the igfx iommu Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx> Cc: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx 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 | 68 +++++++++++++++++++++++- 2 files changed, 67 insertions(+), 17 deletions(-) -- 2.31.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
