netdev - Re: [PATCH net] bpf, arm: start flushing icache range from header

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Message-Id: <20151116.144146.1598629493151443362.davem@davemloft.net>
Date:	Mon, 16 Nov 2015 14:41:46 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	daniel@...earbox.net
Cc:	nschichan@...ebox.fr, ast@...nel.org,
	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org
Subject: Re: [PATCH net] bpf, arm: start flushing icache range from header

From: Daniel Borkmann <daniel@...earbox.net>
Date: Sat, 14 Nov 2015 01:26:53 +0100

> During review I noticed that the icache range we're flushing should
> start at header already and not at ctx.image.
> 
> Reason is that after 55309dd3d4cd ("net: bpf: arm: address randomize
> and write protect JIT code"), we also want to make sure to flush the
> random-sized trap in front of the start of the actual program (analogous
> to x86). No operational differences from user side.
> 
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Tested-by: Nicolas Schichan <nschichan@...ebox.fr>
> Cc: Alexei Starovoitov <ast@...nel.org>

Applied.
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