[PATCH v10 08/10] arm64/kasan: use kasan_map_populate()
From: Pavel Tatashin <hidden>
Date: 2017-10-05 21:13:24
Also in:
linux-arm-kernel, linux-mm, lkml, sparclinux
Subsystem:
arm64 port (aarch64 architecture), kasan, the rest · Maintainers:
Catalin Marinas, Will Deacon, Andrey Ryabinin, Linus Torvalds
To optimize the performance of struct page initialization, vmemmap_populate() will no longer zero memory. Therefore, we must use a new interface to allocate and map kasan shadow memory, that also zeroes memory for us. Signed-off-by: Pavel Tatashin <redacted> --- arch/arm64/mm/kasan_init.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index 81f03959a4ab..b6e92cfa3ea3 100644
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c@@ -161,11 +161,11 @@ void __init kasan_init(void) clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END); - vmemmap_populate(kimg_shadow_start, kimg_shadow_end, - pfn_to_nid(virt_to_pfn(lm_alias(_text)))); + kasan_map_populate(kimg_shadow_start, kimg_shadow_end, + pfn_to_nid(virt_to_pfn(lm_alias(_text)))); /* - * vmemmap_populate() has populated the shadow region that covers the + * kasan_map_populate() has populated the shadow region that covers the * kernel image with SWAPPER_BLOCK_SIZE mappings, so we have to round * the start and end addresses to SWAPPER_BLOCK_SIZE as well, to prevent * kasan_populate_zero_shadow() from replacing the page table entries
@@ -191,9 +191,9 @@ void __init kasan_init(void) if (start >= end) break; - vmemmap_populate((unsigned long)kasan_mem_to_shadow(start), - (unsigned long)kasan_mem_to_shadow(end), - pfn_to_nid(virt_to_pfn(start))); + kasan_map_populate((unsigned long)kasan_mem_to_shadow(start), + (unsigned long)kasan_mem_to_shadow(end), + pfn_to_nid(virt_to_pfn(start))); } /*
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2.14.2