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  • Daniel Borkmann's avatar
    arch: add ARCH_HAS_SET_MEMORY config · d2852a22
    Daniel Borkmann authored
    
    
    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>
    d2852a22