From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 08/26] KVM: PPC: Add PV guest critical sections
Date: Sun, 27 Jun 2010 14:53:17 +0300
Message-ID: <4C273BAD.2090305@redhat.com>
References: <1277508314-915-1-git-send-email-agraf@suse.de> <1277508314-915-9-git-send-email-agraf@suse.de> <4C2709F4.10805@redhat.com> <77DBE095-884F-4986-BE2B-15B2EEAD8CAC@suse.de> <4C271F5A.1030409@redhat.com> <DFC77851-3BE7-4746-93DE-287D5E27EF7D@suse.de> <4C272F08.8090709@redhat.com> <C90A3ABA-60E4-48D4-8332-3B49F3554447@suse.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: "kvm-ppc@vger.kernel.org" <kvm-ppc@vger.kernel.org>,
	KVM list <kvm@vger.kernel.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
To: Alexander Graf <agraf@suse.de>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:42790 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1754786Ab0F0LxW (ORCPT <rfc822;kvm@vger.kernel.org>);
	Sun, 27 Jun 2010 07:53:22 -0400
In-Reply-To: <C90A3ABA-60E4-48D4-8332-3B49F3554447@suse.de>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On 06/27/2010 02:49 PM, Alexander Graf wrote:
>
> Am 27.06.2010 um 12:59 schrieb Avi Kivity <avi@redhat.com>:
>
>> On 06/27/2010 01:33 PM, Alexander Graf wrote:
>>>> Or inc/dec...
>>>
>>>
>>> Uh - huh? How would that help?
>>
>> inc shared->critical   # disable interrupts
>
> There is no opcode in the ppc isa that acts on momery without 
> involving a register.
>
> An inc would be:
>
> ld rX, A(0)
> addi rX, rX, 1
> std rX, A(0)

Right, I was agreeing with you.  I meant there was no inc/dec mem insns.

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