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| author | Daniel Borkmann <daniel@iogearbox.net> | 2017-02-21 16:09:33 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-21 19:30:13 +0100 |
| commit | d2852a2240509e512712e25de2d0796cda435ecb (patch) | |
| tree | 1a7b8c0311150eb57ab62857001f1895560200c8 /arch/s390/Kconfig | |
| parent | net: napi_watchdog() can use napi_schedule_irqoff() (diff) | |
| download | linux-d2852a2240509e512712e25de2d0796cda435ecb.tar.xz linux-d2852a2240509e512712e25de2d0796cda435ecb.zip | |
arch: add ARCH_HAS_SET_MEMORY config
Currently, there's no good way to test for the presence of
set_memory_ro/rw/x/nx() helpers implemented by archs such as
x86, arm, arm64 and s390.
There's DEBUG_SET_MODULE_RONX and DEBUG_RODATA, however both
don't really reflect that: set_memory_*() are also available
even when DEBUG_SET_MODULE_RONX is turned off, and DEBUG_RODATA
is set by parisc, but doesn't implement above functions. Thus,
add ARCH_HAS_SET_MEMORY that is selected by mentioned archs,
where generic code can test against this.
This also allows later on to move DEBUG_SET_MODULE_RONX out of
the arch specific Kconfig to define it only once depending on
ARCH_HAS_SET_MEMORY.
Suggested-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index c6722112527d..094deb1abbe7 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -72,6 +72,7 @@ config S390 select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV + select ARCH_HAS_SET_MEMORY select ARCH_HAS_SG_CHAIN select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAVE_NMI_SAFE_CMPXCHG |