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Commit d06b8ea1 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "arm64: Add fallback option during memory hot add"

parents f64ad702 314d95fa

arch/arm64/mm/mmu.c

+12 −3
Original line number Diff line number Diff line
@@ -1145,6 +1145,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) 
	pgd_t *pgd;

	pud_t *pud;

	pmd_t *pmd;

	int ret = 0;



	do {

		next = pmd_addr_end(addr, end);
@@ -1162,15 +1163,23 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) 
			void *p = NULL;



			p = vmemmap_alloc_block_buf(PMD_SIZE, node);

			if (!p)

				return -ENOMEM;

			if (!p) {

#ifdef CONFIG_MEMORY_HOTPLUG

				vmemmap_free(start, end);

#endif

				ret = -ENOMEM;

				break;

			}



			set_pmd(pmd, __pmd(__pa(p) | PROT_SECT_NORMAL));

		} else

			vmemmap_verify((pte_t *)pmd, node, addr, next);

	} while (addr = next, addr != end);



	return 0;

	if (ret)

		return vmemmap_populate_basepages(start, end, node);

	else

		return ret;

}

#endif	/* CONFIG_ARM64_64K_PAGES */

void vmemmap_free(unsigned long start, unsigned long end)