Enable HAVE_ARCH_KCSAN on all powerpc platforms, 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 PPC64.
See documentation in Documentation/dev-tools/kcsan.rst for more
information.
Signed-off-by: Rohan McLure <rmcl...@linux.ibm.com>
---
v3: Restrict support to 64-bit, as TSAN expects 64-bit __atomic_* compiler
built-ins.
---
arch/powerpc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b8c4ac56bddc..55bc2d724c73 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 PPC64
select HAVE_ARCH_KFENCE if ARCH_SUPPORTS_DEBUG_PAGEALLOC
select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
select HAVE_ARCH_KGDB
--
2.37.2
