Re: tuntap regression in v3.9.8 and v3.10

2013-07-05 Thread Thomas Zeitlhofer
On Fri, Jul 05, 2013 at 11:43:30AM +0800, Jason Wang wrote: > On 07/03/2013 02:11 PM, Thomas Zeitlhofer wrote: > > Hello Jason, > > > > On Wed, Jul 03, 2013 at 10:44:32AM +0800, Jason Wang wrote: [...] > >> Which regression did you see? > > a kernel panic on the host machine. The details are in the

Re: tuntap regression in v3.9.8 and v3.10

2013-07-04 Thread Jason Wang
On 07/03/2013 02:11 PM, Thomas Zeitlhofer wrote: > Hello Jason, > > On Wed, Jul 03, 2013 at 10:44:32AM +0800, Jason Wang wrote: >> On 07/03/2013 06:06 AM, Thomas Zeitlhofer wrote: >>> On Tue, Jul 02, 2013 at 06:01:12PM -0300, Fabio Estevam wrote: On Tue, Jul 2, 2013 at 4:59 PM, Thomas Zeitlhof

Re: tuntap regression in v3.9.8 and v3.10

2013-07-02 Thread Thomas Zeitlhofer
Hello Jason, On Wed, Jul 03, 2013 at 10:44:32AM +0800, Jason Wang wrote: > On 07/03/2013 06:06 AM, Thomas Zeitlhofer wrote: > > On Tue, Jul 02, 2013 at 06:01:12PM -0300, Fabio Estevam wrote: > >> On Tue, Jul 2, 2013 at 4:59 PM, Thomas Zeitlhofer > >> wrote: > >>> Commit "tuntap: set SOCK_ZEROCOPY

Re: tuntap regression in v3.9.8 and v3.10

2013-07-02 Thread Jason Wang
On 07/03/2013 06:06 AM, Thomas Zeitlhofer wrote: > On Tue, Jul 02, 2013 at 06:01:12PM -0300, Fabio Estevam wrote: >> On Tue, Jul 2, 2013 at 4:59 PM, Thomas Zeitlhofer >> wrote: >>> Commit "tuntap: set SOCK_ZEROCOPY flag during open" introduces a >>> regression which is observed with live migration

Re: tuntap regression in v3.9.8 and v3.10

2013-07-02 Thread Thomas Zeitlhofer
On Tue, Jul 02, 2013 at 06:01:12PM -0300, Fabio Estevam wrote: > On Tue, Jul 2, 2013 at 4:59 PM, Thomas Zeitlhofer > wrote: > > Commit "tuntap: set SOCK_ZEROCOPY flag during open" introduces a > > regression which is observed with live migration of qemu/kvm based > > virtual machines that are conn

Re: tuntap regression in v3.9.8 and v3.10

2013-07-02 Thread Fabio Estevam
On Tue, Jul 2, 2013 at 4:59 PM, Thomas Zeitlhofer wrote: > Commit "tuntap: set SOCK_ZEROCOPY flag during open" introduces a > regression which is observed with live migration of qemu/kvm based > virtual machines that are connected to an openvswitch bridge. > > Reverting this commit (b26c93c46a3dec