Re: [Xen-devel] Question about VTPM Implementation

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-03-12 at 09:51 -0400, Konrad Rzeszutek Wilk wrote:
> On Wed, Mar 12, 2014 at 12:32:24PM +0000, Shuaijun Zhang wrote:
> > Hi There,
> > 
> > In the document of VTPM (http://xenbits.xen.org/docs/unstable/misc/vtpm.txt
> > ): The Linux dom0 kernel should not try accessing the TPM while the
> > vTPM Manager
> > domain is accessing it.
> > 
> > Anyone knows the reason why the dom0 should not access the TPM while vTPM
> > Mgr is accessing it?

Surely this is just the classic two masters accessing a single resource
issue. No good can come from having domains poking the same bit of
hardware at the same time!

> 
> Lets rope in the maintainer. Perhaps the doc should be updated to explain
> this.
> 
> > 
> > Thanks & Regards,
> > Jason
> 
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> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> 
> 
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