netdev - Re: [PATCH v3] ARM: net: JIT compiler for packet filters

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Message-Id: <20111220.135526.82432216865290827.davem@davemloft.net>
Date:	Tue, 20 Dec 2011 13:55:26 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	mgherzan@...il.com
Cc:	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
	linux@....linux.org.uk
Subject: Re: [PATCH v3] ARM: net: JIT compiler for packet filters

From: Mircea Gherzan <mgherzan@...il.com>
Date: Tue, 20 Dec 2011 19:04:23 +0100

> Based of Matt Evans's PPC64 implementation.
> 
> The compiler generates ARM instructions but interworking is
> supported for Thumb2 kernels.
> 
> Supports both little and big endian. Unaligned loads are emitted
> for ARMv6+. Not all the BPF opcodes that deal with ancillary data
> are supported. The scratch memory of the filter lives on the stack.
> Hardware integer division is used if it is available.
> 
> Enabled in the same way as for x86-64 and PPC64:
> 
> 	echo 1 > /proc/sys/net/core/bpf_jit_enable
> 
> A value greater than 1 enables opcode output.
> 
> Signed-off-by: Mircea Gherzan <mgherzan@...il.com>

I'm happy with this going in via the ARM tree once all the details
are worked out:

Acked-by: David S. Miller <davem@...emloft.net>
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