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RE: [Xen-devel] is HYPERVISOR_console_io implemented for HVM domains?

from [James Harper] [Permanent Link][Original]
To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] is HYPERVISOR_console_io implemented for HVM domains?
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Wed, 26 Sep 2007 22:54:09 +1000
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Thread-topic: [Xen-devel] is HYPERVISOR_console_io implemented for HVM domains? 
> Only a few hypercalls are allowed to be executed in an HVM guest.
> Console_io() is, in any case, only really for use by dom0.
> 

Ah yes. That makes sense.

> If you want to get debug output, you can send bytes to I/O port 0xe9.
See
> tools/firmware/hvmloader/ directory for a printf() example.

Nice.

Thanks

James

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