arm64: KASAN depends on !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
authorAndrey Ryabinin <aryabinin@virtuozzo.com>
Tue, 17 Nov 2015 15:47:08 +0000 (18:47 +0300)
committerCatalin Marinas <catalin.marinas@arm.com>
Thu, 26 Nov 2015 15:27:09 +0000 (15:27 +0000)
commitf1b9032f61c0412082a240cb7245f8b79e09ae8d
tree02f0f098843bb7fa3511e6967dd862e9db16b7c5
parent3b12acf4c999abaf93023af4bd78d931bce2520c
arm64: KASAN depends on !(ARM64_16K_PAGES && ARM64_VA_BITS_48)

On KASAN + 16K_PAGES + 48BIT_VA
 arch/arm64/mm/kasan_init.c: In function ‘kasan_early_init’:
 include/linux/compiler.h:484:38: error: call to ‘__compiletime_assert_95’ declared with attribute error: BUILD_BUG_ON failed: !IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE)
    _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)

Currently KASAN will not work on 16K_PAGES and 48BIT_VA, so
forbid such configuration to avoid above build failure.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reported-by: Suzuki K. Poulose <Suzuki.Poulose@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/Kconfig