diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 18:23:33 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-02 17:20:26 +0200 |
| commit | f072015c7b742c42aa5649d22f43163cd0eb7024 (patch) | |
| tree | c4d95b90f992cf837ae87193d6944244de9c4f4a /arch/powerpc/kernel | |
| parent | powerpc/32: prepare shadow area for KASAN (diff) | |
| download | linux-f072015c7b742c42aa5649d22f43163cd0eb7024.tar.xz linux-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/kernel')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 45e47752b692..0ea6c4aa3a20 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -31,6 +31,18 @@ CFLAGS_REMOVE_btext.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_prom.o = $(CC_FLAGS_FTRACE) endif +KASAN_SANITIZE_early_32.o := n +KASAN_SANITIZE_cputable.o := n +KASAN_SANITIZE_prom_init.o := n +KASAN_SANITIZE_btext.o := n + +ifdef CONFIG_KASAN +CFLAGS_early_32.o += -DDISABLE_BRANCH_PROFILING +CFLAGS_cputable.o += -DDISABLE_BRANCH_PROFILING +CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING +CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING +endif + obj-y := cputable.o ptrace.o syscalls.o \ irq.o align.o signal_32.o pmc.o vdso.o \ process.o systbl.o idle.o \ |