linux-kernel - Re: [PATCH net-next v5 4/9] xen-netback: Change RX path for mapped SKB fragments

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Message-ID: <53093051.9040907@citrix.com>
Date:	Sat, 22 Feb 2014 23:18:41 +0000
From:	Zoltan Kiss <zoltan.kiss@...rix.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
CC:	<wei.liu2@...rix.com>, <xen-devel@...ts.xenproject.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<jonathan.davies@...rix.com>
Subject: Re: [PATCH net-next v5 4/9] xen-netback: Change RX path for mapped
 SKB fragments

On 18/02/14 17:45, Ian Campbell wrote:
> On Mon, 2014-01-20 at 21:24 +0000, Zoltan Kiss wrote:
>
> Re the Subject: change how? Perhaps "handle foreign mapped pages on the
> guest RX path" would be clearer.
Ok, I'll do that.

>
>> RX path need to know if the SKB fragments are stored on pages from another
>> domain.
> Does this not need to be done either before the mapping change or at the
> same time? -- otherwise you have a window of a couple of commits where
> things are broken, breaking bisectability.
I can move this to the beginning, to keep bisectability. I've put it 
here originally because none of these makes sense without the previous 
patches.

Zoli
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