powerpc/32: Reuse orphaned memblocks in kasan_init_shadow_page_tables() (21613cfa) · Commits · 戴 / test

If concurrent PMD population has happened, re-use orphaned memblocks. Signed-off-by:

arch/powerpc/mm/kasan/kasan_init_32.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -34,16 +34,16 @@ static int __init kasan_init_shadow_page_tables(unsigned long k_start, unsigned
		{
		pmd_t *pmd;
		unsigned long k_cur, k_next;
		pte_t *new = NULL;

		pmd = pmd_offset(pud_offset(pgd_offset_k(k_start), k_start), k_start);

		for (k_cur = k_start; k_cur != k_end; k_cur = k_next, pmd++) {
		pte_t *new;

		k_next = pgd_addr_end(k_cur, k_end);
		if ((void )pmd_page_vaddr(pmd) != kasan_early_shadow_pte)
		continue;

		if (!new)
		new = memblock_alloc(PTE_FRAG_SIZE, PTE_FRAG_SIZE);

		if (!new)