From 758517202bd2e427664857c9f2aa59da36848aca Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Thu, 14 Jun 2018 15:27:44 -0700 Subject: arm: port KCOV to arm KCOV is code coverage collection facility used, in particular, by syzkaller system call fuzzer. There is some interest in using syzkaller on arm devices. So port KCOV to arm. On implementation level this merely declares that KCOV is supported and disables instrumentation of 3 special cases. Reasons for disabling are commented in code. Tested with qemu-system-arm/vexpress-a15. Link: http://lkml.kernel.org/r/20180511143248.112484-1-dvyukov@google.com Signed-off-by: Dmitry Vyukov Acked-by: Mark Rutland Cc: Russell King Cc: Abbott Liu Cc: Catalin Marinas Cc: Koguchi Takuo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2a78bdef9a24..47eb26dc2427 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -8,9 +8,10 @@ config ARM select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE + select ARCH_HAS_KCOV select ARCH_HAS_PTE_SPECIAL if ARM_LPAE - select ARCH_HAS_SET_MEMORY select ARCH_HAS_PHYS_TO_DMA + select ARCH_HAS_SET_MEMORY select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL select ARCH_HAS_STRICT_MODULE_RWX if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST -- cgit