Messages in this thread | | | Subject | Re: [REGRESSION][PATCH V4 2/3] bpf jit: Let the x86 jit handle negative offsets | From | Eric Dumazet <> | Date | Fri, 30 Mar 2012 20:58:00 +0200 |
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On Fri, 2012-03-30 at 17:24 +0200, Jan Seiffert wrote: > Now the helper function from filter.c for negative offsets is exported, > it can be used it in the jit to handle negative offsets. > > First modify the asm load helper functions to handle: > - know positive offsets > - know negative offsets > - any offset > > then the compiler can be modified to explicitly use these helper > when appropriate. > > This fixes the case of a negative X register and allows to lift > the restriction that bpf programs with negative offsets can't > be jited. > > Signed-of-by: Jan Seiffert <kaffeemonster@googlemail.com>
Nice work Jan, thanks a lot.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
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