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From: Avi Kivity <avi@redhat.com>
To: kvm-ia64@vger.kernel.org
Subject: Re: [patch] remove vcpu_info array v5
Date: Mon, 10 Nov 2008 15:54:26 +0000	[thread overview]
Message-ID: <49185932.9010006@redhat.com> (raw)
In-Reply-To: <4909C00F.8050704@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


WARNING: multiple messages have this Message-ID (diff)
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


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

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-30 14:09 [patch] remove vcpu_info array v5 Jes Sorensen
2008-10-30 14:09 ` Jes Sorensen
2008-11-04 11:54 ` Avi Kivity
2008-11-04 11:54   ` Avi Kivity
2008-11-04 13:55 ` Glauber Costa
2008-11-04 13:55   ` Glauber Costa
2008-11-04 14:30 ` Avi Kivity
2008-11-04 14:30   ` Avi Kivity
2008-11-04 14:35 ` Glauber Costa
2008-11-04 14:35   ` Glauber Costa
2008-11-04 14:40 ` Avi Kivity
2008-11-04 14:40   ` Avi Kivity
2008-11-04 14:43 ` Glauber Costa
2008-11-04 14:43   ` Glauber Costa
2008-11-04 14:47 ` Avi Kivity
2008-11-04 14:47   ` Avi Kivity
2008-11-10 12:30 ` Jes Sorensen
2008-11-10 12:30   ` Jes Sorensen
2008-11-10 13:24 ` Jes Sorensen
2008-11-10 13:24   ` Jes Sorensen
2008-11-10 13:30 ` Jes Sorensen
2008-11-10 13:30   ` Jes Sorensen
2008-11-10 13:40 ` Avi Kivity
2008-11-10 13:40   ` Avi Kivity
2008-11-10 13:48 ` Avi Kivity
2008-11-10 13:48   ` Avi Kivity
2008-11-10 15:22 ` Anthony Liguori
2008-11-10 15:22   ` Anthony Liguori
2008-11-10 15:45 ` Avi Kivity
2008-11-10 15:45   ` Avi Kivity
2008-11-10 15:47 ` Jes Sorensen
2008-11-10 15:47   ` Jes Sorensen
2008-11-10 15:54 ` Avi Kivity [this message]
2008-11-10 15:54   ` Avi Kivity
2008-11-10 15:58 ` Jes Sorensen
2008-11-10 15:58   ` Jes Sorensen
2008-11-11  9:26 ` Avi Kivity
2008-11-11  9:26   ` Avi Kivity
2008-11-12 13:02 ` Jes Sorensen
2008-11-12 13:02   ` Jes Sorensen
2008-11-12 13:09 ` Glauber Costa
2008-11-12 13:09   ` Glauber Costa
2008-11-12 13:12 ` Avi Kivity
2008-11-12 13:12   ` Avi Kivity
2008-11-12 13:14 ` Avi Kivity
2008-11-12 13:14   ` Avi Kivity
  -- strict thread matches above, loose matches on Subject: below --
2008-11-13 16:46 [patch] pass opague CPUState through libkvm instead of int vcpu Jes Sorensen
2008-11-13 16:46 ` Jes Sorensen
2008-11-18 12:55 ` Avi Kivity
2008-11-18 12:55   ` Avi Kivity
2008-11-18 12:59 ` Jes Sorensen
2008-11-18 12:59   ` Jes Sorensen

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