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Date: Thu, 3 Apr 2008 19:17:16 -0500
From: Scott Wood <scottwood@freescale.com>
To: Hollis Blanchard <hollisb@us.ibm.com>
Subject: Re: [kvm-ppc-devel] [PATCH] Add idle wait support for 44x platforms
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Cc: kvm-ppc-devel@lists.sourceforge.net, linuxppc-dev@ozlabs.org,
	Stuart Yoder <stuart.yoder@freescale.com>
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On Thu, Apr 03, 2008 at 06:13:59PM -0500, Hollis Blanchard wrote:
> Stuart, we're getting into ePAPR territory. Do you think we need to worry 
> about a hypervisor not handling mtmsr(MSR_WE)? In that case, we'd need to be 
> more specific than just testing for "/hypervisor". IMHO every hypervisor 
> should implement it... but maybe /hypervisor/idle = "wait" would be more 
> explicit and therefore better?

We can't trap on MSR[WE] updates on hypervisor-enabled chips; the write
is silently ignored.

-Scott