318  * preservation. The successor kernel will remain isolated to the scratch space
462  * be anywhere in physical address space. The scratch regions give us a
464  * can later safely load our new kexec images into and then use the scratch
472  * The scratch areas are scaled by default as percent of memory allocated from
478  * per-node scratch areas:
515 			pr_notice("scratch scale is %d%%\n", scratch_scale);  in kho_parse_scratch_size()
548 	pr_notice("scratch areas: lowmem: %lluMiB global: %lluMiB pernode: %lldMiB\n",  in kho_parse_scratch_size()
617 	 * reserve scratch area in low memory for lowmem allocations in the  in kho_reserve_scratch()
661 	pr_warn("Failed to reserve scratch area, disabling kexec handover\n");  in kho_reserve_scratch()
1444 	 * Mark scratch mem as CMA before we return it. That way we  in kho_release_scratch()
1446 	 * we can reuse it as scratch memory again later.  in kho_release_scratch()
1481 	struct kho_scratch *scratch = NULL;  in kho_populate()  local
1507 	scratch = early_memremap(scratch_phys, scratch_len);  in kho_populate()
1508 	if (!scratch) {  in kho_populate()
1509 		pr_warn("setup: failed to memremap scratch (phys=0x%llx, len=%lld)\n",  in kho_populate()
1521 		struct kho_scratch *area = &scratch[i];  in kho_populate()
1527 			pr_warn("failed to mark the scratch region 0x%pa+0x%pa: %d",  in kho_populate()
1531 		pr_debug("Marked 0x%pa+0x%pa as scratch", &area->addr, &size);  in kho_populate()
1537 	 * Now that we have a viable region of scratch memory, let's tell  in kho_populate()
1553 	if (scratch)  in kho_populate()
1554 		early_memunmap(scratch, scratch_len);  in kho_populate()
1565 	struct kexec_buf scratch;  in kho_fill_kimage()  local
1573 	scratch = (struct kexec_buf){  in kho_fill_kimage()
1583 	err = kexec_add_buffer(&scratch);  in kho_fill_kimage()
1586 	image->kho.scratch = &image->segment[image->nr_segments - 1];  in kho_fill_kimage()
1603 		/* Try to fit the kimage into our KHO scratch region */  in kho_walk_scratch()