30 	u64 *buf;		/* data buffer for usable-memory property */
35 	/* usable memory ranges to look up */
46  * get_exclude_memory_ranges - Get exclude memory ranges. This list includes
50  * @mem_ranges:                Range list to add the memory ranges to.
86 	/* exclude memory ranges should be sorted for easy lookup */  in get_exclude_memory_ranges()
90 		pr_err("Failed to setup exclude memory ranges\n");  in get_exclude_memory_ranges()
95  * get_usable_memory_ranges - Get usable memory ranges. This list includes
98  * @mem_ranges:               Range list to add the memory ranges to.
107 	 * Early boot failure observed on guests when low memory (first memory  in get_usable_memory_ranges()
108 	 * block?) is not added to usable memory. So, add [0, crashk_res.end]  in get_usable_memory_ranges()
110 	 * Also, crashed kernel's memory must be added to reserve map to  in get_usable_memory_ranges()
128 		pr_err("Failed to setup usable memory ranges\n");  in get_usable_memory_ranges()
133  * get_crash_memory_ranges - Get crash memory ranges. This list includes
134  *                           first/crashing kernel's memory regions that
136  * @mem_ranges:              Range list to add the memory ranges to.
150 		/* Skip backup memory region, which needs a separate entry */  in get_crash_memory_ranges()
168 	/* Reallocate memory ranges if there is no space to split ranges */  in get_crash_memory_ranges()
185 	 *        first 64K bytes of memory.  in get_crash_memory_ranges()
203 		pr_err("Failed to setup crash memory ranges\n");  in get_crash_memory_ranges()
208  * get_reserved_memory_ranges - Get reserve memory ranges. This list includes
209  *                              memory regions that should be added to the
210  *                              memory reserve map to ensure the region is
212  * @mem_ranges:                 Range list to add the memory ranges to.
231 		pr_err("Failed to setup reserved memory ranges\n");  in get_reserved_memory_ranges()
236  * __locate_mem_hole_top_down - Looks top down for a large enough memory hole
237  *                              in the memory regions between buf_min & buf_max
239  * @kbuf:                       Buffer contents and memory parameters.
263 		/* Memory hole not found */  in __locate_mem_hole_top_down()
267 		/* Adjust memory region based on the given range */  in __locate_mem_hole_top_down()
275 			/* Suitable memory range found. Set kbuf->mem */  in __locate_mem_hole_top_down()
287  * locate_mem_hole_top_down_ppc64 - Skip special memory regions to find a
289  * @kbuf:                           Buffer contents and memory parameters.
292  * @emem:                           Exclude memory ranges.
335  * __locate_mem_hole_bottom_up - Looks bottom up for a large enough memory hole
336  *                               in the memory regions between buf_min & buf_max
338  * @kbuf:                        Buffer contents and memory parameters.
362 		/* Memory hole not found */  in __locate_mem_hole_bottom_up()
366 		/* Adjust memory region based on the given range */  in __locate_mem_hole_bottom_up()
374 			/* Suitable memory range found. Set kbuf->mem */  in __locate_mem_hole_bottom_up()
385  * locate_mem_hole_bottom_up_ppc64 - Skip special memory regions to find a
387  * @kbuf:                            Buffer contents and memory parameters.
390  * @emem:                            Exclude memory ranges.
434  * @um_info:                  Usable memory buffer and ranges info.
437  * Frees up the old buffer if memory reallocation fails.
461  * add_usable_mem - Add the usable memory ranges within the given memory range
463  * @um_info:        Usable memory buffer and ranges info.
464  * @base:           Base address of memory range to look for.
465  * @end:            End address of memory range to look for.
505  *                          usable memory ranges.
507  * @usm:                    linux,drconf-usable-memory property value.
508  * @data:                   Pointer to usable memory buffer and ranges info.
521 	 * linux,drconf-usable-memory property.  in kdump_setup_usable_lmb()
524 		pr_err("linux,drconf-usable-memory property already exists!");  in kdump_setup_usable_lmb()
551  * add_usable_mem_property - Add usable memory property for the given
552  *                           memory node.
554  * @dn:                      Memory node.
555  * @um_info:                 Usable memory buffer and ranges info.
571 		pr_err("Buffer (%d) too small for memory node: %pOF\n",  in add_usable_mem_property()
575 	pr_debug("Memory node path: %s\n", path);  in add_usable_mem_property()
605 	 * each representing a memory range.  in add_usable_mem_property()
621 	 * No kdump kernel usable memory found in this memory node.  in add_usable_mem_property()
622 	 * Write (0,0) tuple in linux,usable-memory property for  in add_usable_mem_property()
631 	ret = fdt_setprop(fdt, node, "linux,usable-memory", um_info->buf,  in add_usable_mem_property()
641  * update_usable_mem_fdt - Updates kdump kernel's fdt with linux,usable-memory
642  *                         and linux,drconf-usable-memory DT properties as
643  *                         appropriate to restrict its memory usage.
645  * @usable_mem:            Usable memory ranges for kdump kernel.
656 		pr_err("Usable memory ranges for kdump kernel not found\n");  in update_usable_mem_fdt()
660 	node = fdt_path_offset(fdt, "/ibm,dynamic-reconfiguration-memory");  in update_usable_mem_fdt()
662 		pr_debug("No dynamic reconfiguration memory found\n");  in update_usable_mem_fdt()
664 		pr_err("Malformed device tree: error reading /ibm,dynamic-reconfiguration-memory.\n");  in update_usable_mem_fdt()
672 	/* Memory ranges to look up */  in update_usable_mem_fdt()
676 	dn = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in update_usable_mem_fdt()
682 			pr_err("Could not setup linux,drconf-usable-memory property for kdump\n");  in update_usable_mem_fdt()
686 		ret = fdt_setprop(fdt, node, "linux,drconf-usable-memory",  in update_usable_mem_fdt()
689 			pr_err("Failed to update fdt with linux,drconf-usable-memory property");  in update_usable_mem_fdt()
695 	 * Walk through each memory node and set linux,usable-memory property  in update_usable_mem_fdt()
698 	for_each_node_by_type(dn, "memory") {  in update_usable_mem_fdt()
701 			pr_err("Failed to set linux,usable-memory property for %s node",  in update_usable_mem_fdt()
713  * load_backup_segment - Locate a memory hole to place the backup region.
715  * @kbuf:                Buffer contents and memory parameters.
780  * load_elfcorehdr_segment - Setup crash memory ranges and initialize elfcorehdr
783  * @kbuf:                    Buffer contents and memory parameters.
831  * @kbuf:                          Buffer contents and memory parameters.
952 	 * For kdump kernel, also account for linux,usable-memory and  in kexec_fdt_totalsize_ppc64()
953 	 * linux,drconf-usable-memory properties. Get an approximate on the  in kexec_fdt_totalsize_ppc64()
954 	 * number of usable memory entries and use for FDT size estimation.  in kexec_fdt_totalsize_ppc64()
1074 	 * Restrict memory usage for kdump kernel by setting up  in setup_new_fdt_ppc64()
1075 	 * usable memory ranges and memory reserve map.  in setup_new_fdt_ppc64()
1084 			pr_err("Error setting up usable-memory property for kdump kernel\n");  in setup_new_fdt_ppc64()
1089 		 * Ensure we don't touch crashed kernel's memory except the  in setup_new_fdt_ppc64()
1095 			pr_err("Error reserving crash memory: %s\n",  in setup_new_fdt_ppc64()
1104 			pr_err("Error reserving memory for backup: %s\n",  in setup_new_fdt_ppc64()
1115 	/* Update memory reserve map */  in setup_new_fdt_ppc64()
1128 			pr_err("Error updating memory reserve map: %s\n",  in setup_new_fdt_ppc64()
1141  * arch_kexec_locate_mem_hole - Skip special memory regions like rtas, opal,
1143  *                              memory ranges) as they can't be used for kexec
1145  *                              memory hole is found.
1146  * @kbuf:                       Buffer contents and memory parameters.
1158 	/* Look up the exclude ranges list while locating the memory hole */  in arch_kexec_locate_mem_hole()
1192 		pr_err("Failed to locate memory buffer of size %lu\n",  in arch_kexec_locate_mem_hole()
1212 	/* Get exclude memory ranges needed for setting up kexec segments */  in arch_kexec_kernel_image_probe()
1215 		pr_err("Failed to setup exclude memory ranges for buffer lookup\n");  in arch_kexec_kernel_image_probe()