linux-kernel - Re: [RFC PATCH net-next 0/6] seccomp filter JIT

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Date:	Fri, 26 Apr 2013 13:46:22 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Xi Wang <xi.wang@...il.com>
Cc:	Daniel Borkmann <dborkman@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Russell King <linux@....linux.org.uk>,
	Eric Dumazet <edumazet@...gle.com>,
	Will Drewry <wad@...omium.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH net-next 0/6] seccomp filter JIT

On Fri, Apr 26, 2013 at 01:25:39PM +0200, Heiko Carstens wrote:
> On Fri, Apr 26, 2013 at 03:51:40AM -0400, Xi Wang wrote:
> > This patchset brings JIT support to seccomp filters for x86_64 and ARM.
> > It is against the net-next tree.
> > 
> > The current BPF JIT interface only accepts sk_filter, not seccomp_filter.
> > Patch 1/6 refactors the interface to make it more general.
> > 
> > With the refactored interface, patches 2/6 and 3/6 implement the seccomp
> > BPF_S_ANC_SECCOMP_LD_W instruction in x86 & ARM JIT.
> > 
> > Status:
> > 
> > * x86_64 & ARM: JIT tested with seccomp examples.
> > 
> > * powerpc [4/6]: no seccomp change - compile checked.
> > 
> > * sparc [5/6] & s390 [6/6]: no seccomp change - untested.
> > 
> > Sorry I have no sparc or s390 build environment here.  Can someone help
> > check 5/6 and 6/6?  Thanks.
> 
> Your patches are against which tree?
> They don't apply on top of linux-next or Linus' linux tree.

Right... just right the subject of each patch description says, they apply
against net-next.

And build fine on s390.

> Btw. are there any test cases around for BPF JIT?
> Not only for the new seccomp but also netfilter?

This however is still a valid question.

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