From owner-svn-src-all@FreeBSD.ORG  Mon Jan 28 19:01:22 2013
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@FreeBSD.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id D44B1C5A;
 Mon, 28 Jan 2013 19:01:22 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140])
 by mx1.freebsd.org (Postfix) with ESMTP id 8998231D;
 Mon, 28 Jan 2013 19:01:21 +0000 (UTC)
Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua
 [212.40.38.101])
 by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id VAA03568;
 Mon, 28 Jan 2013 21:01:19 +0200 (EET) (envelope-from avg@FreeBSD.org)
Message-ID: <5106CAFF.3050905@FreeBSD.org>
Date: Mon, 28 Jan 2013 21:01:19 +0200
From: Andriy Gapon <avg@FreeBSD.org>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:17.0) Gecko/20130113 Thunderbird/17.0.2
MIME-Version: 1.0
To: John Baldwin <jhb@FreeBSD.org>
Subject: Re: svn commit: r245850 - in head/sys/sparc64: include sparc64
References: <201301232252.r0NMqLxh085107@svn.freebsd.org>
 <5103ABCC.3010706@FreeBSD.org> <201301280954.51558.jhb@freebsd.org>
In-Reply-To: <201301280954.51558.jhb@freebsd.org>
X-Enigmail-Version: 1.4.6
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org,
 src-committers@FreeBSD.org
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 28 Jan 2013 19:01:22 -0000

on 28/01/2013 16:54 John Baldwin said the following:
> On Saturday, January 26, 2013 5:11:24 am Andriy Gapon wrote:
>> on 24/01/2013 00:52 Marius Strobl said the following:
>>> This is due to
>>>   the fact that on sparc64, spinlock_enter() only raises the PIL but doesn't
>>>   disable interrupts completely.
>>
>> John,
>>
>> I wonder if you are considering pushing your amd64 TPR patch some day...
> 
> I have it in a p4 branch still that is easy to update.  I haven't yet been
> able to do any testing/benchmarks that show it as beneficial.
> 

I am thinking about architectural benefits.
Like doing inter-processor stuff with less risk of deadlocks.
Or "hard CPU stop" without resorting to NMI.
Things like that...

-- 
Andriy Gapon