RE: [xen-devel][PATCH] Battery Management

["Ross Philipson" <Ross.Philipson@xxxxxxxxxx>]

> You mention a shortage of VT-x enabled laptops but a quick websearch
> suggests there are plenty of AMD-V-capable laptops.

It is not so much a shortage of VT-x capable laptops in general but
rather a shortage of ones available for us to test with.

Thanks
Ross

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ian Jackson
Sent: Tuesday, October 14, 2008 11:05 AM
To: Kamala Narasimhan
Cc: Tian, Kevin; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [xen-devel][PATCH] Battery Management

Kamala Narasimhan writes ("RE: [xen-devel][PATCH] Battery Management"):
> There isn't a whole range of VT-x enabled laptops I could get my hands
> on to better answer your question.  However, given the current battery
> firmware implementation trend, the pass-through mode is likely to work
> on laptops that uses CMBattery interface.  The goal was to attempt to
> put the base vACPI implementation that can be fine tuned as we go
along
> to better support a whole range of VT-x enabled laptops shipped in
> future.  That said, I have tested pass-through mode on the hardware I
> could get hold of (that uses CMBattery interface) and seen it work.

I'm obviously missing something obvious here.  I wasn't able to easily
find out what `CMBattery' is (perhaps I need to read a suitable volume
of ACPI spec) but laptops have been having ACPI-based battery
management for quite a while.

You mention a shortage of VT-x enabled laptops but a quick websearch
suggests there are plenty of AMD-V-capable laptops.

Dare I ask, what about PV guests ?  Obviously access to the host
battery is not supported for right now but what is the plan ?

Sorry if these seem like stupid questions.

Ian.

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