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RE: [Xen-devel] PV-GRUB spins at 100% cpu

To: "Jean Guyader" <jean.guyader@xxxxxxxxxxxxx>, "Christopher S. Aker" <caker@xxxxxxxxxxxx>
Subject: RE: [Xen-devel] PV-GRUB spins at 100% cpu
From: "Ian Pratt" <Ian.Pratt@xxxxxxxxxxxxx>
Date: Wed, 24 Sep 2008 18:33:10 +0100
Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, xen devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Thread-index: Ackea2Qh8+KKb0XPQjWXyqSrgaPpvAAABJ1g
Thread-topic: [Xen-devel] PV-GRUB spins at 100% cpu
> Christopher S. Aker wrote:
> > PV-GRUB is really awesome, however I noticed that it spins at 100%
> cpu,
> > even while just sitting at its prompt.  Just a heads-up...
> >
> 
> The problem comes from GRUB. I thing even on a real machine GRUB takes
> all the CPU.

Yep.
We could path the src to make it issue a block hypercall with a 100ms
timeout...

Ian

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