WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] HVM SMP linux guest hangs in cpu_idle() with EFLAGS.IF =

On Wed, 2010-07-21 at 18:56 +0100, Nakajima, Jun wrote:
> Gianni Tedesco wrote on Wed, 21 Jul 2010 at 10:29:43:
> 
> > Another data-point I have on this but haven't mentioned here yet is that
> > the userspace (anaconda) processes are usually hanging in
> > tty_wait_until_sent() which is apparently why things are woken up by
> > receiving a keypress on the serial line.
> > 
> > At other times the hang occurs while userspace (hotplug, also anaconda)
> > is waiting in do_poll() on a kernel netlink socket. In that case a
> > keypress on serial line also wakes it (!!)
> >
> 
> I'm not sure if I followed all the emails on the thread, but did you
> see such a hang without serial connection? I had impression (i.e. kind
> of remember) serial connection of Linux at boot time caused a hang
> especially with SMP (on native). 

I have seen the hang without serial console enabled but with serial
still attached... In that case the hangs still happen but much more
rarely. I am going to try some further tests to remove serial from the
equation and see what happens.

Thanks for the hint


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel