> From: Jan Beulich > Sent: Tuesday, January 26, 2016 8:57 PM > To: Chang Jianzhong > Cc: andrew.coop...@citrix.com; k...@xen.org; xen-devel@lists.xen.org > Subject: Re: [Xen-devel] [PATCH] xen vtd : set msi guest_masked 0 by default > > >>> On 26.01.16 at 02:34, <chang...@gmail.com> wrote: > > There are some problems when msi guest_masked is set to 1 by default. > > When guest os is windows 2008 r2 server, > > the device(eg X540-AT2 vf) is not initialized correctly. > > Host will always receive message like this :"VF Reset msg received from vf". > > Guest has network connectivity issues, > > and can not correctly receive/send the packet. > > So, guest_masked is set to 0 by default. > > You describe a problem and half of your change, but there's no > connection between the two: What is actually wrong with current > behavior (matching the hardware's - MSI-X mask bits are set when > coming out of reset). >
Agree. Jianzhong, could you elaborate how mask bit is related to the error message above? Also instead of changing the behavior completely, you need consider there must be a reason for guest_masked set to 1 originally. So when you fix one issue please pay attention to not break other scenarios. Thanks Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
