RADEON_VM_PTB_ALIGN_SIZE  884 drivers/gpu/drm/radeon/radeon.h #define RADEON_VM_PTB_ALIGN_MASK (RADEON_VM_PTB_ALIGN_SIZE - 1)
RADEON_VM_PTB_ALIGN_SIZE 1177 drivers/gpu/drm/radeon/radeon_vm.c 	const unsigned align = min(RADEON_VM_PTB_ALIGN_SIZE,