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Re: [Xen-devel] Announcing OpenBSD/amd64 Xen port

To: Mathieu Ropert <mro@xxxxxxxxxx>
Subject: Re: [Xen-devel] Announcing OpenBSD/amd64 Xen port
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Fri, 9 Jun 2006 10:27:12 +0100
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On 8 Jun 2006, at 10:48, Mathieu Ropert wrote:

- events/clock issue: there seems to be a race condition leading to clock not ticking, hence putting system to sleep till a keyboard/network/disk interrupt is received.

The ticker doesn't tick when you block. Your idle loop needs to disable interrupts, set a one-shot timer, then block. See safe_halt() in our Linux source tree (arch/i386/kernel/time-xen.c) -- the function expects to be called with interrupts disabled and caller should also have already checked for any other threads being runnable.

 -- Keir


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