linux-kernel - Re: [Xen-devel] [PATCH 02/12] early PV on HVM

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Message-ID: <20100608134637.GA5998@phenom.dumpdata.com>
Date:	Tue, 8 Jun 2010 09:46:37 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"Yaozu (Eddie) Dong" <eddie.dong@...el.com>,
	"ddutile@...hat.com" <ddutile@...hat.com>,
	"sheng@...ux.intel.com" <sheng@...ux.intel.com>
Subject: Re: [Xen-devel] [PATCH 02/12] early PV on HVM

> > > +	HYPERVISOR_shared_info = (struct shared_info *)shared_info_page;
> > > +
> > > +	/* Don't do the full vcpu_info placement stuff until we have a
> > > +	   possible map and a non-dummy shared_info. */
> > 
> > Might want to mention where the full vpcu placement is done.
> 
> The comment is not accurate, we actually don't do any vcpu_info
> placement on hvm because it is not very useful there.
> Better just to remove the comment (I have done so in my tree).
> 
> > > +	per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0];
> > 
So.. what is the purpose of the per_cpu(xen_vcpu, 0) then?
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