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authorAndrey Ryabinin <aryabinin@virtuozzo.com>2017-07-10 15:50:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-10 16:32:33 -0700
commitfa69b5989bb0031efa96f2f4ff49caf6532a0970 (patch)
treeb63559b6b8ca3e2f2645e06959f65970ad727461 /mm/Kconfig
parent3f9ec80f7b22ec46272a32408c5cd91ae2f8c4c0 (diff)
downloadlinux-fa69b5989bb0031efa96f2f4ff49caf6532a0970.tar.bz2
mm/kasan: add support for memory hotplug
KASAN doesn't happen work with memory hotplug because hotplugged memory doesn't have any shadow memory. So any access to hotplugged memory would cause a crash on shadow check. Use memory hotplug notifier to allocate and map shadow memory when the hotplugged memory is going online and free shadow after the memory offlined. Link: http://lkml.kernel.org/r/20170601162338.23540-4-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexander Potapenko <glider@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig1
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 46ef77d5c332..48b1af447fa7 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -161,7 +161,6 @@ config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
depends on SPARSEMEM || X86_64_ACPI_NUMA
depends on ARCH_ENABLE_MEMORY_HOTPLUG
- depends on COMPILE_TEST || !KASAN
config MEMORY_HOTPLUG_SPARSE
def_bool y