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Message-ID: <1361387854.19353.214.camel@edumazet-glaptop> (sfid-20130220_201750_195753_AA50D888)
Subject: Re: 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs
 copies out
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Marc MERLIN <marc@merlins.org>, David Miller <davem@davemloft.net>,
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Date: Wed, 20 Feb 2013 11:17:34 -0800
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On Wed, 2013-02-20 at 19:16 +0100, Johannes Berg wrote:

> Yes and no. The current code doesn't pull in much data, not even the IP
> header, so worst case it copies 14 bytes (ethernet header) in mac80211
> to obtain alignment. By pulling in everything here, it later has to copy
> everything again later to obtain alignment.

Can you give me pointers to the code doing that ?

On x86 we should not doing anything.