linux-kernel - Re: [Xen-devel] [patch 14/33] xen: xen time implementation

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Date:	Wed, 6 Jun 2007 14:18:28 +0200
From:	Andi Kleen <ak@...e.de>
To:	Keir Fraser <keir@...source.com>
Cc:	Jan Beulich <jbeulich@...ell.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Xen-devel <xen-devel@...ts.xensource.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Chris Wright <chrisw@...s-sol.org>,
	virtualization@...ts.osdl.org, Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Xen-devel] [patch 14/33] xen: xen time implementation


> 
> Yes, this could be an issue. Is there any way to get an interrupt or MCE
> when thermal throttling occurs?

Yes you can get an thermal interrupt from the local APIC. See the Linux
kernel source. Of course there would be still a race window.

On the other hand some timing issues on throttling are probably 
the smallest of the users' problems when it really happens.

Standard Linux just ignores it.

-Andi


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