diff options
| author | Andrey Ryabinin <aryabinin@virtuozzo.com> | 2017-07-11 00:50:34 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-11 01:32:33 +0200 |
| commit | fa69b5989bb0031efa96f2f4ff49caf6532a0970 (patch) | |
| tree | b63559b6b8ca3e2f2645e06959f65970ad727461 /mm/Kconfig | |
| parent | arm64/kasan: don't allocate extra shadow memory (diff) | |
| download | linux-fa69b5989bb0031efa96f2f4ff49caf6532a0970.tar.xz linux-fa69b5989bb0031efa96f2f4ff49caf6532a0970.zip | |
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/Kconfig | 1 |
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 |