netdev - Re: [PATCH] AF_PACKET: Fix PACKET_MMAP on 64-bit kernel/32-bit user systems

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Message-Id: <20090810.180603.36252332.davem@davemloft.net>
Date:	Mon, 10 Aug 2009 18:06:03 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	cndougla@...ux.vnet.ibm.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] AF_PACKET: Fix PACKET_MMAP on 64-bit kernel/32-bit
 user systems


You can't make that change without breaking all existing
64-bit binaries running on 64-bit kernels.

Secondarily, we're already fully aware of this problem, that's why
there is a second version of the data structure named tpacket2_hdr
which was created in a way which fixes the problem without breaking
existing setups.
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