29 	u64 *buf;		/* data buffer for usable-memory property */
34 	/* usable memory ranges to look up */
45  * get_exclude_memory_ranges - Get exclude memory ranges. This list includes
49  * @mem_ranges:                Range list to add the memory ranges to.
85 	/* exclude memory ranges should be sorted for easy lookup */  in get_exclude_memory_ranges()
89 		pr_err("Failed to setup exclude memory ranges\n");  in get_exclude_memory_ranges()
94  * get_usable_memory_ranges - Get usable memory ranges. This list includes
97  * @mem_ranges:               Range list to add the memory ranges to.
106 	 * Early boot failure observed on guests when low memory (first memory  in get_usable_memory_ranges()
107 	 * block?) is not added to usable memory. So, add [0, crashk_res.end]  in get_usable_memory_ranges()
109 	 * Also, crashed kernel's memory must be added to reserve map to  in get_usable_memory_ranges()
127 		pr_err("Failed to setup usable memory ranges\n");  in get_usable_memory_ranges()
132  * get_crash_memory_ranges - Get crash memory ranges. This list includes
133  *                           first/crashing kernel's memory regions that
135  * @mem_ranges:              Range list to add the memory ranges to.
149 		/* Skip backup memory region, which needs a separate entry */  in get_crash_memory_ranges()
167 	/* Reallocate memory ranges if there is no space to split ranges */  in get_crash_memory_ranges()
184 	 *        first 64K bytes of memory.  in get_crash_memory_ranges()
202 		pr_err("Failed to setup crash memory ranges\n");  in get_crash_memory_ranges()
207  * get_reserved_memory_ranges - Get reserve memory ranges. This list includes
208  *                              memory regions that should be added to the
209  *                              memory reserve map to ensure the region is
211  * @mem_ranges:                 Range list to add the memory ranges to.
230 		pr_err("Failed to setup reserved memory ranges\n");  in get_reserved_memory_ranges()
235  * __locate_mem_hole_top_down - Looks top down for a large enough memory hole
236  *                              in the memory regions between buf_min & buf_max
238  * @kbuf:                       Buffer contents and memory parameters.
262 		/* Memory hole not found */  in __locate_mem_hole_top_down()
266 		/* Adjust memory region based on the given range */  in __locate_mem_hole_top_down()
274 			/* Suitable memory range found. Set kbuf->mem */  in __locate_mem_hole_top_down()
286  * locate_mem_hole_top_down_ppc64 - Skip special memory regions to find a
288  * @kbuf:                           Buffer contents and memory parameters.
291  * @emem:                           Exclude memory ranges.
334  * __locate_mem_hole_bottom_up - Looks bottom up for a large enough memory hole
335  *                               in the memory regions between buf_min & buf_max
337  * @kbuf:                        Buffer contents and memory parameters.
361 		/* Memory hole not found */  in __locate_mem_hole_bottom_up()
365 		/* Adjust memory region based on the given range */  in __locate_mem_hole_bottom_up()
373 			/* Suitable memory range found. Set kbuf->mem */  in __locate_mem_hole_bottom_up()
384  * locate_mem_hole_bottom_up_ppc64 - Skip special memory regions to find a
386  * @kbuf:                            Buffer contents and memory parameters.
389  * @emem:                            Exclude memory ranges.
433  * @um_info:                  Usable memory buffer and ranges info.
436  * Frees up the old buffer if memory reallocation fails.
460  * add_usable_mem - Add the usable memory ranges within the given memory range
462  * @um_info:        Usable memory buffer and ranges info.
463  * @base:           Base address of memory range to look for.
464  * @end:            End address of memory range to look for.
504  *                          usable memory ranges.
506  * @usm:                    linux,drconf-usable-memory property value.
507  * @data:                   Pointer to usable memory buffer and ranges info.
520 	 * linux,drconf-usable-memory property.  in kdump_setup_usable_lmb()
523 		pr_err("linux,drconf-usable-memory property already exists!");  in kdump_setup_usable_lmb()
550  * add_usable_mem_property - Add usable memory property for the given
551  *                           memory node.
553  * @dn:                      Memory node.
554  * @um_info:                 Usable memory buffer and ranges info.
570 		pr_err("Buffer (%d) too small for memory node: %pOF\n",  in add_usable_mem_property()
574 	pr_debug("Memory node path: %s\n", path);  in add_usable_mem_property()
604 	 * each representing a memory range.  in add_usable_mem_property()
620 	 * No kdump kernel usable memory found in this memory node.  in add_usable_mem_property()
621 	 * Write (0,0) tuple in linux,usable-memory property for  in add_usable_mem_property()
630 	ret = fdt_setprop(fdt, node, "linux,usable-memory", um_info->buf,  in add_usable_mem_property()
640  * update_usable_mem_fdt - Updates kdump kernel's fdt with linux,usable-memory
641  *                         and linux,drconf-usable-memory DT properties as
642  *                         appropriate to restrict its memory usage.
644  * @usable_mem:            Usable memory ranges for kdump kernel.
655 		pr_err("Usable memory ranges for kdump kernel not found\n");  in update_usable_mem_fdt()
659 	node = fdt_path_offset(fdt, "/ibm,dynamic-reconfiguration-memory");  in update_usable_mem_fdt()
661 		pr_debug("No dynamic reconfiguration memory found\n");  in update_usable_mem_fdt()
663 		pr_err("Malformed device tree: error reading /ibm,dynamic-reconfiguration-memory.\n");  in update_usable_mem_fdt()
671 	/* Memory ranges to look up */  in update_usable_mem_fdt()
675 	dn = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in update_usable_mem_fdt()
681 			pr_err("Could not setup linux,drconf-usable-memory property for kdump\n");  in update_usable_mem_fdt()
685 		ret = fdt_setprop(fdt, node, "linux,drconf-usable-memory",  in update_usable_mem_fdt()
688 			pr_err("Failed to update fdt with linux,drconf-usable-memory property");  in update_usable_mem_fdt()
694 	 * Walk through each memory node and set linux,usable-memory property  in update_usable_mem_fdt()
697 	for_each_node_by_type(dn, "memory") {  in update_usable_mem_fdt()
700 			pr_err("Failed to set linux,usable-memory property for %s node",  in update_usable_mem_fdt()
712  * load_backup_segment - Locate a memory hole to place the backup region.
714  * @kbuf:                Buffer contents and memory parameters.
779  * load_elfcorehdr_segment - Setup crash memory ranges and initialize elfcorehdr
782  * @kbuf:                    Buffer contents and memory parameters.
830  * @kbuf:                          Buffer contents and memory parameters.
952 	 * Restrict memory usage for kdump kernel by setting up  in setup_new_fdt_ppc64()
953 	 * usable memory ranges and memory reserve map.  in setup_new_fdt_ppc64()
962 			pr_err("Error setting up usable-memory property for kdump kernel\n");  in setup_new_fdt_ppc64()
967 		 * Ensure we don't touch crashed kernel's memory except the  in setup_new_fdt_ppc64()
973 			pr_err("Error reserving crash memory: %s\n",  in setup_new_fdt_ppc64()
982 			pr_err("Error reserving memory for backup: %s\n",  in setup_new_fdt_ppc64()
988 	/* Update memory reserve map */  in setup_new_fdt_ppc64()
1001 			pr_err("Error updating memory reserve map: %s\n",  in setup_new_fdt_ppc64()
1014  * arch_kexec_locate_mem_hole - Skip special memory regions like rtas, opal,
1016  *                              memory ranges) as they can't be used for kexec
1018  *                              memory hole is found.
1019  * @kbuf:                       Buffer contents and memory parameters.
1031 	/* Look up the exclude ranges list while locating the memory hole */  in arch_kexec_locate_mem_hole()
1065 		pr_err("Failed to locate memory buffer of size %lu\n",  in arch_kexec_locate_mem_hole()
1085 	/* Get exclude memory ranges needed for setting up kexec segments */  in arch_kexec_kernel_image_probe()
1088 		pr_err("Failed to setup exclude memory ranges for buffer lookup\n");  in arch_kexec_kernel_image_probe()