From mboxrd@z Thu Jan  1 00:00:00 1970
From: Shirley Ma <mashirle@us.ibm.com>
Subject: Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host
 kernel
Date: Wed, 15 Sep 2010 11:48:08 -0700
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Cc: Arnd Bergmann <arnd@arndb.de>, Avi Kivity <avi@redhat.com>,
	"Xin, Xiaohui" <xiaohui.xin@intel.com>,
	David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
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On Wed, 2010-09-15 at 19:30 +0200, Michael S. Tsirkin wrote:
> At some level NETIF_F_NETNS_LOCAL makes sense: local packets
> can get anywhere. OTOH one wonders whether there might be other
> issues, e.g. in theory devices could hang on to frag pages
> just by doing get_page.  There might be other issues.
> Maybe we are better off white-listing known-good drivers
> with a new flag? 

Sounds reasonable to me if there is no such a flag to be easily used.

Thanks
Shirley