linux-kernel - Re: [PATCH v2 10/23] xen/arm: compile and run xenbus

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Message-ID: <20120809165424.GA7220@phenom.dumpdata.com>
Date:	Thu, 9 Aug 2012 12:54:24 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Mukesh Rathor <mukesh.rathor@...cle.com>
Cc:	Daniel De Graaf <dgdegra@...ho.nsa.gov>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	"Tim (Xen.org)" <tim@....org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-dev@...ts.linaro.org" <linaro-dev@...ts.linaro.org>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"arnd@...db.de" <arnd@...db.de>
Subject: Re: [PATCH v2 10/23] xen/arm: compile and run xenbus

> > Right, the original patch didn't break anything with PV domains. The case
> > it doesn't handle is an HVM initial domain with an already-running
> > Xenstore domain; I think this applies both to ARM and hybrid/PVH on x86.
> > In that case, usage would be set to LOCAL instead of HVM.
> 
> 
> Right, however if I am not mistaken there is no such thing as an HVM
> dom0 right now on x86 and hybrid/PVH is probably going to return true on
> xen_pv_domain() and false on xen_hvm_domain().

The other way around.  HVM = true, PV = false.

Mukesh, correct me if I am wrong pls.
> 
> In the ARM case, given that we don't have a start_info page, we would
> need another way to figure out whether a xenstore stub domain is already
> running, so I think we can just postpone the solution of that problem
> for now.
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