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Date: Tue, 24 Jan 2006 18:34:05 -0600
From: Craig Boston <craig@tobuj.gank.org>
To: John Baldwin <jhb@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, Scott Long <scottl@samsco.org>
Subject: Re: Weird PCI interrupt delivery problem (resolution, sort of)
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On Tue, Jan 24, 2006 at 10:43:49AM -0500, John Baldwin wrote:
> What if you do a read of the lapic before the write?  Maybe doing 'x = 
> lapic->eoi;  lapic->eoi = 0;'?

Reading the lapic before the write has no effect.

Reading the lapic after the write makes it work.

Craig