From: Ian Campbell <Ian.Campbell@citrix.com>
To: James Harper <james.harper@bendigoit.com.au>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"xen-users@lists.xensource.com" <xen-users@lists.xensource.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Features and bug-fixes that went in Linux 3.2
Date: Mon, 9 Jan 2012 22:37:42 +0000 [thread overview]
Message-ID: <1326148662.29084.77.camel@dagon.hellion.org.uk> (raw)
In-Reply-To: <6035A0D088A63A46850C3988ED045A4B09AFCB@BITCOM1.int.sbss.com.au>
On Mon, 2012-01-09 at 22:26 +0000, James Harper wrote:
> > - Initial work laid out for netback page-flipping (also called zero-copying).
>
> Isn't this how it used to work originally?
Some of the original infrastructure for doing this was not upstreamable
(the PageForeign stuff) so while upstream netback I decided to go with a
simpler/less-intrusive copying mode so we could have some sort of
networking support in mainline.
I've been working on re-laying the necessary infrastructure to allow for
page flipping/mapping mode in upstream (as well as fixing another
generic class of bug) -- you can see the "skb frag destructor" patches
on the netdev list.
Ian.
next prev parent reply other threads:[~2012-01-09 22:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 21:30 Features and bug-fixes that went in Linux 3.2 Konrad Rzeszutek Wilk
2012-01-09 22:26 ` James Harper
2012-01-09 22:37 ` Ian Campbell [this message]
2012-01-12 17:02 ` Laszlo Ersek
2012-01-12 17:23 ` Ian Campbell
2012-01-10 8:47 ` Fantu
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