From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Subject: Re: [PATCH RFC] KVM: use kmalloc() for small dirty bitmaps
Date: Thu, 21 Oct 2010 18:09:04 +0900
Message-ID: <4CC00330.5080006@oss.ntt.co.jp>
References: <20101020183401.b8241b73.yoshikawa.takuya@oss.ntt.co.jp> <4CBF9CAF.4010305@oss.ntt.co.jp> <4CBFFC06.5070809@redhat.com> <4CBFFDC1.3020803@oss.ntt.co.jp> <4CC00224.7070007@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: mtosatti@redhat.com, kvm@vger.kernel.org,
	takuya.yoshikawa@gmail.com
To: Avi Kivity <avi@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from serv2.oss.ntt.co.jp ([222.151.198.100]:38859 "EHLO
	serv2.oss.ntt.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1755428Ab0JUJHK (ORCPT <rfc822;kvm@vger.kernel.org>);
	Thu, 21 Oct 2010 05:07:10 -0400
In-Reply-To: <4CC00224.7070007@redhat.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

(2010/10/21 18:04), Avi Kivity wrote:
> On 10/21/2010 10:45 AM, Takuya Yoshikawa wrote:
>>> Well, 4K single buffer is 128MB worth of RAM. This won't help live migration much, but will help vga dirty logging, which is active at all times and uses much smaller memory slots. So I think it's worthwhile.
>>>
>>
>>
>>
>> Thanks, the patch I sent now should might be better.
>>
>> Which one do you prefer?
>
> Well, the two combined :)
>
> Let's apply the double-buffer first and follow with kmalloc() conversion.
>

OK, thanks :)

I'll send the kmalloc() patch later!

   Takuya