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0ddd2ae586
ttm page fault handler ttm_bo_vm_fault_reserved() maps TTM_BO_VM_NUM_PREFAULT more pages beforehand due to the principle of locality. However, on some platform the page faults are more costly, this patch intends to increase the number of ttm pre-fault to relieve the number of page faults. When multiple levels of page table is supported, the new default value would be the PMD size, similar to huge page. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reported-and-tested-by: Li Jingxiang <jingxiang.li@ecarxgroup.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240604084934.225738-1-lingshan.zhu@amd.com Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>