RE: [Xen-users] Using TPM in dom0

To:	Tom Buhl <malists@xxxxxx>
Subject:	RE: [Xen-users] Using TPM in dom0
From:	"Fischer, Anna" <anna.fischer@xxxxxx>
Date:	Fri, 14 Mar 2008 10:25:10 +0000
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Thread-topic:	[Xen-users] Using TPM in dom0

Hi Tom,

> i am using Xen 3.2.0 and want to use the TPM in dom0. I have
> activated vtpm and everything runs fine in my domUs.
> The question is, how can I access the TPM in dom0? As far as
> I know vtpm_managerd exclusively locks /dev/tpm0. As soon as
> I start vtpm_managerd my own program cannot access the TPM
> anymore. Is there a vtpm instance for dom0 like the ones for
> the user domains?

I don't think that it's currently possible to do this. The vtpm_manager is 
designed to be the only application accessing the TPM in dom0 - as by design 
and for many security reasons. Eventually you should post your request to 
xen-devel and see if there have been any recent developments on this.

Anna

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RE: [Xen-users] Using TPM in dom0