linux-kernel - Re: [RFC 1/2] PCI-Express Non-Transparent Bridge Support

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Message-ID: <1342355859.23866.17.camel@chumley>
Date:	Sun, 15 Jul 2012 07:37:39 -0500
From:	David Hagood <david.hagood@...il.com>
To:	Jon Mason <jon.mason@...el.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-pci@...r.kernel.org, Dave Jiang <dave.jiang@...el.com>
Subject: Re: [RFC 1/2] PCI-Express Non-Transparent Bridge Support

Have you looked at any of the work that the PXI group has done on NTB
support within PXI?
http://www.ni.com/white-paper/12523/en

I was on that working group, and one of the first capabilities I
suggested for it was IP over NTB - I was going to implement this at my
employer, but the project took a different turn and this idea got put on
the back burner. I am glad somebody else has seen fit to take it up.

Also, a stupid question but one I have to ask: have you taken into
account the idea that the CPUs on each side of the NTB might have
different endian-ness? I was looking at a case with a PPC on one side of
the bridge and an X86 on the other.

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