[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [Xen-devel] HVM SMP linux guest hangs in cpu_idle() with EFLAGS.IF = 1


  • To: Gianni Tedesco <gianni.tedesco@xxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Date: Wed, 21 Jul 2010 10:56:00 -0700
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc:
  • Delivery-date: Wed, 21 Jul 2010 10:56:53 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acso+pI1nXS+zbsZR2+2pN5jGX8wCAAAlRuQ
  • Thread-topic: [Xen-devel] HVM SMP linux guest hangs in cpu_idle() with EFLAGS.IF = 1

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). 
 
> Gianni Tedesco
> 

Jun
___
Intel Open Source Technology Center



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

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.