linux-kernel - Re: [PATCH] kvm: make vcpu life cycle separated from kvm instance

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Message-ID: <20111205104044.GI12507@redhat.com>
Date:	Mon, 5 Dec 2011 12:40:44 +0200
From:	Gleb Natapov <gleb@...hat.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Liu ping fan <kernelfans@...il.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, aliguori@...ibm.com,
	jan.kiszka@....de
Subject: Re: [PATCH] kvm: make vcpu life cycle separated from kvm instance

On Mon, Dec 05, 2011 at 12:22:53PM +0200, Avi Kivity wrote:
> On 12/05/2011 12:18 PM, Gleb Natapov wrote:
> > > 
> > > We can, but that's a bigger change.
> > > 
> > Is it? I do not see a lot of accesses to vcpu array except those loops.
> >
> 
> Well actually some of those loops have to go away and be replaced by a
> hash lookup with apic id as key.
> 
Yes, but apic ids are guest controllable, so there should be separate hash that
will hold vcpu to gust configured apic id mapping. Shouldn't prevent us
from moving to rculist now.

--
			Gleb.
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