The patch titled
Subject: kcov: improve CONFIG_ARCH_HAS_KCOV help text
has been added to the -mm tree. Its filename is
kcov-improve-config_arch_has_kcov-help-text.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kcov-improve-config_arch_has_kcov-help-text.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kcov-improve-config_arch_has_kcov-help-text.patch
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------------------------------------------------------
From: Mark Rutland <mark.rutland@xxxxxxx>
Subject: kcov: improve CONFIG_ARCH_HAS_KCOV help text
The help text for CONFIG_ARCH_HAS_KCOV is stale, and describes the feature
as being enabled only for x86_64, when it is now enabled for several
architectures, including arm, arm64, powerpc, and s390.
Let's remove that stale help text, and update it along the lines of hat
for ARCH_HAS_FORTIFY_SOURCE, better describing when an architecture should
select CONFIG_ARCH_HAS_KCOV.
Link: http://lkml.kernel.org/r/20190412102733.5154-1-mark.rutland@xxxxxxx
Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx>
Acked-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Kconfig.debug | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/lib/Kconfig.debug~kcov-improve-config_arch_has_kcov-help-text
+++ a/lib/Kconfig.debug
@@ -753,9 +753,9 @@ endmenu # "Memory Debugging"
config ARCH_HAS_KCOV
bool
help
- KCOV does not have any arch-specific code, but currently it is enabled
- only for x86_64. KCOV requires testing on other archs, and most likely
- disabling of instrumentation for some early boot code.
+ An architecture should select this when it can successfully
+ build and run with CONFIG_KCOV. This typically requires
+ disabling instrumentation for some early boot code.
config CC_HAS_SANCOV_TRACE_PC
def_bool $(cc-option,-fsanitize-coverage=trace-pc)
_
Patches currently in -mm which might be from mark.rutland@xxxxxxx are
kcov-improve-config_arch_has_kcov-help-text.patch
