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  • Levin, Alexander (Sasha Levin)'s avatar
    kmemcheck: remove annotations · 49502766
    Levin, Alexander (Sasha Levin) authored Nov 15, 2017
    Patch series "kmemcheck: kill kmemcheck", v2.
    
    As discussed at LSF/MM, kill kmemcheck.
    
    KASan is a replacement that is able to work without the limitation of
    kmemcheck (single CPU, slow).  KASan is already upstream.
    
    We are also not aware of any users of kmemcheck (or users who don't
    consider KASan as a suitable replacement).
    
    The only objection was that since KASAN wasn't supported by all GCC
    versions provided by distros at that time we should hold off for 2
    years, and try again.
    
    Now that 2 years have passed, and all distros provide gcc that supports
    KASAN, kill kmemcheck again for the very same reasons.
    
    This patch (of 4):
    
    Remove kmemcheck annotations, and calls to kmemcheck from the kernel.
    
    [alexander.levin@verizon.com: correctly remove kmemcheck call from dma_map_sg_attrs]
      Link: http://lkml.kernel.org/r/20171012192151.26531-1-alexander.levin@verizon.com
    Link: http://lkml.kernel.org/r/20171007030159.22241-2-alexander.levin@verizon.com
    
    
    Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
    Cc: Alexander Potapenko <glider@google.com>
    Cc: Eric W. Biederman <ebiederm@xmission.com>
    Cc: Michal Hocko <mhocko@kernel.org>
    Cc: Pekka Enberg <penberg@kernel.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Tim Hansen <devtimhansen@gmail.com>
    Cc: Vegard Nossum <vegardno@ifi.uio.no>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    49502766