RE: [Xen-devel] writable page tables appear to be causing xen to

To:	"Kip Macy" <kip.macy@xxxxxxxxx>
Subject:	RE: [Xen-devel] writable page tables appear to be causing xen to lock up
From:	"Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date:	Tue, 19 Apr 2005 19:07:17 +0100
Cc:	xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date:	Tue, 19 Apr 2005 18:09:05 +0000
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Thread-topic:	[Xen-devel] writable page tables appear to be causing xen to lock up

 
> My guess from this is FreeBSD is DOSing xen by endlessly 
> triggering failsafe_callback. Although this is *extremely* 
> likely to be my fault, it raises an interesting point about 
> the need for heavily reducing the scheduling priority of 
> misbehaved guests.

Hmm, was the failsafe callback failing? That should result in the domain
being crashed.

If the guest was actually leaving Xen, then it should be preempted and
scheduled as per normal.

Ian 

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RE: [Xen-devel] writable page tables appear to be causing xen to lock up