On Wed, Sep 15, 2010 at 10:00:04AM -0700, Shirley Ma wrote: > On Wed, 2010-09-15 at 17:39 +0200, Michael S. Tsirkin wrote: > > In fact, I rechecked: both bridge and loopback have NETIF_F_HIGHDMA > > set. > > So maybe we should check NETIF_F_NETNS_LOCAL ... > > > > macvtap in bridged mode is interesting as well. > > I found that too, just wondered which flag to use is better. :) > > Thanks > Shirley
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? -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
