Re: [PATCH v2 3/4] drm/i915/gem: Extra pages in ttm_tt for ccs data

2022-03-02 Thread Thomas Hellström
On Wed, 2022-03-02 at 03:23 +0530, Ramalingam C wrote: > On Xe-HP and later devices, we use dedicated compression control > state (CCS) stored in local memory for each surface, to support the > 3D and media compression formats. > > The memory required for the CCS of the entire local memory is 1/25

[PATCH v2 3/4] drm/i915/gem: Extra pages in ttm_tt for ccs data

2022-03-01 Thread Ramalingam C
On Xe-HP and later devices, we use dedicated compression control state (CCS) stored in local memory for each surface, to support the 3D and media compression formats. The memory required for the CCS of the entire local memory is 1/256 of the local memory size. So before the kernel boot, the requir