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From: Avi Kivity <avi@redhat.com>
To: Jes Sorensen <jes@sgi.com>
Cc: Glauber Costa <glommer@gmail.com>,
	Anthony Liguori <aliguori@us.ibm.com>,
	Hollis Blanchard <hollisb@us.ibm.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"kvm-ia64@vger.kernel.org" <kvm-ia64@vger.kernel.org>
Subject: Re: [patch] remove vcpu_info array v5
Date: Mon, 10 Nov 2008 17:54:26 +0200	[thread overview]
Message-ID: <49185932.9010006@redhat.com> (raw)
In-Reply-To: <491857A7.1040909@sgi.com>

Jes Sorensen wrote:
> If we have reasons where we actually rely on the cpu number, and thats
> not counting end-user pretty-number-print concerns, then I found that
> we practically never use the cpu number. If we really use it a lot, I
> agree we need a fast way, I just didn't hit it in my builds. What did I
> miss?
>

The code I mentioned only runs if the -no-kvm-irqchip option is passed.  
It's not the highest performing option...

So this isn't used a lot.  But cpus definitely use cpu numbers (as apic 
ids), so qemu needs to be prepared to handle this.  As to scalability, 
that takes will take a lot more work than removing/changing arbitrary 
limits.  Look at qemu_mutex and weep.

-- 
error compiling committee.c: too many arguments to function


  reply	other threads:[~2008-11-10 15:54 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-30 14:09 [patch] remove vcpu_info array v5 Jes Sorensen
2008-11-04 11:54 ` Avi Kivity
2008-11-04 13:55   ` Glauber Costa
2008-11-04 14:30     ` Avi Kivity
2008-11-04 14:35       ` Glauber Costa
2008-11-04 14:40         ` Avi Kivity
2008-11-04 14:43           ` Glauber Costa
2008-11-04 14:47             ` Avi Kivity
2008-11-10 13:30           ` Jes Sorensen
2008-11-10 13:40             ` Avi Kivity
2008-11-10 15:22               ` Anthony Liguori
2008-11-10 15:45                 ` Avi Kivity
2008-11-10 15:47               ` Jes Sorensen
2008-11-10 15:54                 ` Avi Kivity [this message]
2008-11-10 15:58                   ` Jes Sorensen
2008-11-11  9:26                     ` Avi Kivity
2008-11-12 13:02                       ` Jes Sorensen
2008-11-12 13:09                         ` Glauber Costa
2008-11-12 13:14                           ` Avi Kivity
2008-11-12 13:12                         ` Avi Kivity
2008-11-10 12:30       ` Jes Sorensen
2008-11-10 13:24   ` Jes Sorensen
2008-11-10 13:48     ` Avi Kivity
2008-11-13 16:46       ` [patch] pass opague CPUState through libkvm instead of int vcpu Jes Sorensen
2008-11-18 12:55         ` Avi Kivity
2008-11-18 12:59           ` Jes Sorensen

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