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Nirmoy Das authored
This optimization relied on having to clear CCS on allocations. If there is no need to clear CCS on allocations then this would mostly help in reducing CPU utilization. Revert this patch at this moment because of: 1 Currently Xe can't do clear on free and using a invalid ttm flag, TTM_TT_FLAG_CLEARED_ON_FREE which could poison global ttm pool on multi-device setup. 2 Also for LNL CPU:WB doesn't require clearing CCS as such BO will not be allowed to bind with compression PTE. Subsequent patch will disable clearing CCS for CPU:WB BOs for LNL. This reverts commit 23683061. Cc: Christian König <christian.koenig@amd.com> Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240828083635.23601-1-nirmoy.das@intel.comSigned-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
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