• Dave Hansen's avatar
    x86: Cleanly separate use of asm-generic/mm_hooks.h · a1ea1c03
    Dave Hansen authored
    asm-generic/mm_hooks.h provides some generic fillers for the 90%
    of architectures that do not need to hook some mmap-manipulation
    functions.  A comment inside says:
    
    > Define generic no-op hooks for arch_dup_mmap and
    > arch_exit_mmap, to be included in asm-FOO/mmu_context.h
    > for any arch FOO which doesn't need to hook these.
    
    So, does x86 need to hook these?  It depends on CONFIG_PARAVIRT.
    We *conditionally* include this generic header if we have
    CONFIG_PARAVIRT=n.  That's madness.
    
    With this patch, x86 stops using asm-generic/mmu_hooks.h entirely.
    We use our own copies of the functions.  The paravirt code
    provides some stubs if it is disabled, and we always call those
    stubs in our x86-private versions of arch_exit_mmap() and
    arch_dup_mmap().
    Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
    Cc: Dave Hansen <dave@sr71.net>
    Cc: x86@kernel.org
    Link: http://lkml.kernel.org/r/20141118182349.14567FA5@viggo.jf.intel.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    a1ea1c03
mmu_context.h 3.08 KB