Commit d2852a22 authored by Daniel Borkmann's avatar Daniel Borkmann Committed by David S. Miller

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: default avatarLaura Abbott <labbott@redhat.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 559c59b2
...@@ -222,6 +222,10 @@ config GENERIC_SMP_IDLE_THREAD ...@@ -222,6 +222,10 @@ config GENERIC_SMP_IDLE_THREAD
config GENERIC_IDLE_POLL_SETUP config GENERIC_IDLE_POLL_SETUP
bool bool
# Select if arch has all set_memory_ro/rw/x/nx() functions in asm/cacheflush.h
config ARCH_HAS_SET_MEMORY
bool
# Select if arch init_task initializer is different to init/init_task.c # Select if arch init_task initializer is different to init/init_task.c
config ARCH_INIT_TASK config ARCH_INIT_TASK
bool bool
......
...@@ -4,6 +4,7 @@ config ARM ...@@ -4,6 +4,7 @@ config ARM
select ARCH_CLOCKSOURCE_DATA select ARCH_CLOCKSOURCE_DATA
select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GCOV_PROFILE_ALL
......
...@@ -12,6 +12,7 @@ config ARM64 ...@@ -12,6 +12,7 @@ config ARM64
select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV select ARCH_HAS_KCOV
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_SG_CHAIN select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_CMPXCHG_LOCKREF
......
...@@ -72,6 +72,7 @@ config S390 ...@@ -72,6 +72,7 @@ config S390
select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV select ARCH_HAS_KCOV
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_SG_CHAIN select ARCH_HAS_SG_CHAIN
select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_HAVE_NMI_SAFE_CMPXCHG
......
...@@ -53,6 +53,7 @@ config X86 ...@@ -53,6 +53,7 @@ config X86
select ARCH_HAS_KCOV if X86_64 select ARCH_HAS_KCOV if X86_64
select ARCH_HAS_MMIO_FLUSH select ARCH_HAS_MMIO_FLUSH
select ARCH_HAS_PMEM_API if X86_64 select ARCH_HAS_PMEM_API if X86_64
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_SG_CHAIN select ARCH_HAS_SG_CHAIN
select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_HAVE_NMI_SAFE_CMPXCHG
......
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