linux-master/mm/memremap.c

66 static void pgmap_array_delete(struct range *range)
68 	xa_store_range(&pgmap_array, PHYS_PFN(range->start), PHYS_PFN(range->end),
75 	struct range *range = &pgmap->ranges[range_id];
76 	unsigned long pfn = PHYS_PFN(range->start);
88 		struct range *range = &pgmap->ranges[i];
90 		if (pfn >= PHYS_PFN(range->start) &&
91 		    pfn <= PHYS_PFN(range->end))
100 	const struct range *range = &pgmap->ranges[range_id];
102 	return (range->start + range_len(range)) >> PAGE_SHIFT;
113 	struct range *range = &pgmap->ranges[range_id];
121 	remove_pfn_range_from_zone(page_zone(first_page), PHYS_PFN(range->start),
122 				   PHYS_PFN(range_len(range)));
124 		__remove_pages(PHYS_PFN(range->start),
125 			       PHYS_PFN(range_len(range)), NULL);
127 		arch_remove_memory(range->start, range_len(range),
129 		kasan_remove_zero_shadow(__va(range->start), range_len(range));
133 	untrack_pfn(NULL, PHYS_PFN(range->start), range_len(range), true);
134 	pgmap_array_delete(range);
174 	struct range *range = &pgmap->ranges[range_id];
182 	conflict_pgmap = get_dev_pagemap(PHYS_PFN(range->start), NULL);
189 	conflict_pgmap = get_dev_pagemap(PHYS_PFN(range->end), NULL);
196 	is_ram = region_intersects(range->start, range_len(range),
202 				range->start, range->end);
206 	error = xa_err(xa_store_range(&pgmap_array, PHYS_PFN(range->start),
207 				PHYS_PFN(range->end), pgmap, GFP_KERNEL));
214 	error = track_pfn_remap(NULL, &params->pgprot, PHYS_PFN(range->start), 0,
215 			range_len(range));
219 	if (!mhp_range_allowed(range->start, range_len(range), !is_private)) {
238 		error = add_pages(nid, PHYS_PFN(range->start),
239 				PHYS_PFN(range_len(range)), params);
241 		error = kasan_add_zero_shadow(__va(range->start), range_len(range));
247 		error = arch_add_memory(nid, range->start, range_len(range),
255 		move_pfn_range_to_zone(zone, PHYS_PFN(range->start),
256 				PHYS_PFN(range_len(range)), params->altmap,
269 				PHYS_PFN(range->start),
270 				PHYS_PFN(range_len(range)), pgmap);
278 		kasan_remove_zero_shadow(__va(range->start), range_len(range));
280 	untrack_pfn(NULL, PHYS_PFN(range->start), range_len(range), true);
282 	pgmap_array_delete(range);
361 	 * successfully processed range. This communicates how many
389  * 1/ At a minimum the range and type members of @pgmap must be initialized
399  * 4/ range is expected to be a host memory range that could feasibly be
400  *    treated as a "System RAM" range, i.e. not a device mmio range, but
443 		if (phys >= pgmap->range.start && phys <= pgmap->range.end)