From 6f0926c00565a91f3bd7ca1aa05db307daed5e0f Mon Sep 17 00:00:00 2001 From: Rohan McLure Date: Mon, 6 Feb 2023 13:18:01 +1100 Subject: [PATCH] powerpc/kcsan: Add KCSAN Support Enable HAVE_ARCH_KCSAN for 64-bit Book3S, permitting use of the kernel concurrency sanitiser through the CONFIG_KCSAN_* kconfig options. KCSAN requires compiler builtins __atomic_* 64-bit values, and so only report support on 64-bit. See documentation in Documentation/dev-tools/kcsan.rst for more information. Signed-off-by: Rohan McLure [mpe: Limit to Book3S to avoid build failure on Book3E] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20230206021801.105268-6-rmclure@linux.ibm.com --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 24e023d..1f3306e 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -198,6 +198,7 @@ config PPC select HAVE_ARCH_KASAN if PPC_RADIX_MMU select HAVE_ARCH_KASAN if PPC_BOOK3E_64 select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN + select HAVE_ARCH_KCSAN if PPC_BOOK3S_64 select HAVE_ARCH_KFENCE if ARCH_SUPPORTS_DEBUG_PAGEALLOC select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET select HAVE_ARCH_KGDB -- 2.7.4