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

To: Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
From: Gianni Tedesco <gianni.tedesco@xxxxxxxxxx>
Date: Wed, 21 Jul 2010 18:29:43 +0100
Delivery-date: Wed, 21 Jul 2010 10:32:03 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

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 (!!)

Gianni Tedesco


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

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

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