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Commit 21eeca64 authored by Sudarshan Rajagopalan's avatar Sudarshan Rajagopalan Committed by Swathi Sridhar
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arm64: Force non-block mappings for memory hotplug 



Force non-block mappings to be created when
DEBUG_PAGEALLOC is enabled.

Change-Id: I467ece9a7c9cef8b198ace6c5a795f203db38845
Signed-off-by: default avatarSudarshan Rajagopalan <sudaraja@codeaurora.org>
parent 108c8433

arch/arm64/mm/mmu.c

+3 −1
Original line number Diff line number Diff line
@@ -708,11 +708,13 @@ void hotplug_paging(phys_addr_t start, phys_addr_t size) 
	struct page *pg;

	phys_addr_t pgd_phys = pgd_pgtable_alloc();

	pgd_t *pgd = pgd_set_fixmap(pgd_phys);

	int flags;



	memcpy(pgd, swapper_pg_dir, PAGE_SIZE);

	flags = debug_pagealloc_enabled() ? NO_BLOCK_MAPPINGS : 0;



	__create_pgd_mapping(pgd, start, __phys_to_virt(start), size,

		PAGE_KERNEL, pgd_pgtable_alloc, !debug_pagealloc_enabled());

		PAGE_KERNEL, pgd_pgtable_alloc, flags);



	cpu_replace_ttbr1(__va(pgd_phys));

	memcpy(swapper_pg_dir, pgd, PAGE_SIZE);