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RE: [Xen-devel] HVM domain with write caching going on somewheretodisk

To: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] HVM domain with write caching going on somewheretodisk
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Fri, 9 Nov 2007 15:18:40 +1100
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Thread-topic: [Xen-devel] HVM domain with write caching going on somewheretodisk
> More testing... there is one write done by windows via the BIOS
> interface on boot, and that is to sector 2958215 on my system. By
using
> dd, I only finally see the results of that write after I have flushed
> out the page cache by doing a few big file transfers. That is even
after
> I got O_DIRECT working...
> 
> Something strange is going on I think.

Found the problem - I wasn't implementing the FLUSH operation in the PV
drivers. D'oh.

It's booting now. I'll put a release up tonight.

James

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