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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 16:23:33 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:26 +1000 |
| commit | f072015c7b742c42aa5649d22f43163cd0eb7024 (patch) | |
| tree | c4d95b90f992cf837ae87193d6944244de9c4f4a /arch/powerpc/lib | |
| parent | powerpc/32: prepare shadow area for KASAN (diff) | |
| download | linux-dev-f072015c7b742c42aa5649d22f43163cd0eb7024.tar.xz linux-dev-f072015c7b742c42aa5649d22f43163cd0eb7024.zip | |
powerpc: disable KASAN instrumentation on early/critical files.
All files containing functions run before kasan_early_init() is called
must have KASAN instrumentation disabled.
For those file, branch profiling also have to be disabled otherwise
each if () generates a call to ftrace_likely_update().
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/Makefile | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 47a4de434c22..c55f9c27bf79 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -8,6 +8,14 @@ ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) CFLAGS_REMOVE_code-patching.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_feature-fixups.o = $(CC_FLAGS_FTRACE) +KASAN_SANITIZE_code-patching.o := n +KASAN_SANITIZE_feature-fixups.o := n + +ifdef CONFIG_KASAN +CFLAGS_code-patching.o += -DDISABLE_BRANCH_PROFILING +CFLAGS_feature-fixups.o += -DDISABLE_BRANCH_PROFILING +endif + obj-y += alloc.o code-patching.o feature-fixups.o ifndef CONFIG_KASAN |