linux-kernel - Re: [PATCH V2 1/3] seccomp: add generic code for jitted seccomp filters.

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Message-ID: <CAGXu5j+jpXrcLDyAV+p81pjapaQeKQTMz4+JXjKj03DV-yoC=w@mail.gmail.com>
Date:	Mon, 1 Apr 2013 14:53:09 -0700
From:	Kees Cook <keescook@...omium.org>
To:	Nicolas Schichan <nschichan@...ebox.fr>
Cc:	Will Drewry <wad@...omium.org>,
	Mircea Gherzan <mgherzan@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Paris <eparis@...hat.com>,
	James Morris <james.l.morris@...cle.com>,
	Serge Hallyn <serge.hallyn@...onical.com>
Subject: Re: [PATCH V2 1/3] seccomp: add generic code for jitted seccomp filters.

On Mon, Mar 18, 2013 at 7:50 AM, Nicolas Schichan <nschichan@...ebox.fr> wrote:
> Architecture must select HAVE_SECCOMP_FILTER_JIT and implement
> seccomp_jit_compile() and seccomp_jit_free() if they intend to support
> jitted seccomp filters.
>
> struct seccomp_filter has been moved to <linux/seccomp.h> to make its
> content available to the jit compilation code.
>
> In a way similar to the net BPF, the jit compilation code is expected
> to updates struct seccomp_filter.bpf_func pointer to the generated
> code.
>
> Signed-off-by: Nicolas Schichan <nschichan@...ebox.fr>

Acked-by: Kees Cook <keescook@...omium.org>

I'd love to see this for x86 too. I suspect it'd be a small change
after this series lands.

Thanks,

-Kees

-- 
Kees Cook
Chrome OS Security
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