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SubjectRe: [REGRESSION][PATCH V4 2/3] bpf jit: Let the x86 jit handle negative offsets
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From: Jan Seiffert <kaffeemonster@googlemail.com>
Date: Fri, 30 Mar 2012 17:24:05 +0200

> 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>

Applied, but with trailing empty lines removed:

> diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S
> index 6687022..2897d7f 100644
> --- a/arch/x86/net/bpf_jit.S
> +++ b/arch/x86/net/bpf_jit.S
> + ret
> +

There.


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