linux-kernel - Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host kernel

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Message-ID: <1284531428.24603.251.camel@localhost.localdomain>
Date:	Tue, 14 Sep 2010 23:17:08 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	"Xin, Xiaohui" <xiaohui.xin@...el.com>,
	Avi Kivity <avi@...hat.com>,
	David Miller <davem@...emloft.net>,
	"arnd@...db.de" <arnd@...db.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host
 kernel

On Wed, 2010-09-15 at 07:27 +0200, Michael S. Tsirkin wrote:
> For some of the issues, try following the discussion around
> net: af_packet: don't call tpacket_destruct_skb() until the skb is
> sent
> out.
> 
> Summary: it's difficult to do correctly generally. Limiting ourselves
> to transmit on specific devices might make it possible.

Thanks for the tips.

Shirley

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