From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751929AbcGFJ0a (ORCPT <rfc822;w@1wt.eu>);
	Wed, 6 Jul 2016 05:26:30 -0400
Received: from out4133-34.mail.aliyun.com ([42.120.133.34]:8501 "EHLO
	out4133-34.mail.aliyun.com" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1750990AbcGFJ02 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Wed, 6 Jul 2016 05:26:28 -0400
X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R891e4;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01l10436;MF=hillf.zj@alibaba-inc.com;NM=1;PH=DS;RN=3;SR=0;TI=SMTPD_----5-t7zw2_1467797168;
Reply-To: "Hillf Danton" <hillf.zj@alibaba-inc.com>
From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: "'Martin Schwidefsky'" <schwidefsky@de.ibm.com>
Cc: "'linux-kernel'" <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
References: <014201d1d738$744c8f90$5ce5aeb0$@alibaba-inc.com>	<014601d1d73b$5a3c0420$0eb40c60$@alibaba-inc.com>	<20160706082350.5c56ca40@mschwide>	<015301d1d751$8973de50$9c5b9af0$@alibaba-inc.com> <20160706104753.74daeaa2@mschwide>
In-Reply-To: <20160706104753.74daeaa2@mschwide>
Subject: Re: [PATCH 2/2] s390/mm: use ipte range to invalidate multiple page table entries
Date: Wed, 06 Jul 2016 17:26:08 +0800
Message-ID: <015d01d1d768$6db5d9e0$49218da0$@alibaba-inc.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Outlook 14.0
Thread-Index: AQK8Vkg+lnz5ZwkbbcG+Wzrq/undzQGSWlD2AcJ6/PkCtq6olgJVyas/nfMRsHA=
Content-Language: zh-cn
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

> 
> You are still a bit cryptic, 
>
Sorry, Sir, simply because I'm not native English speaker.

> are you trying to tell me that your hint is
> about trying to avoid the preempt_enable() call?
> 
Yes, since we are already in the context with page table lock held.

thanks
Hillf