From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx148.postini.com [74.125.245.148]) by kanga.kvack.org (Postfix) with SMTP id 759416B0027 for ; Tue, 16 Apr 2013 04:03:46 -0400 (EDT) Received: from /spool/local by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 16 Apr 2013 09:00:43 +0100 Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id A825C17D8020 for ; Tue, 16 Apr 2013 09:04:35 +0100 (BST) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps4074.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r3G83Vhp42860548 for ; Tue, 16 Apr 2013 08:03:31 GMT Received: from d06av05.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r3G83e9P003791 for ; Tue, 16 Apr 2013 02:03:40 -0600 Date: Tue, 16 Apr 2013 10:03:40 +0200 From: Heiko Carstens Subject: Re: [BUG][s390x] mm: system crashed Message-ID: <20130416080340.GA23856@osiris> References: <156480624.266924.1365995933797.JavaMail.root@redhat.com> <2068164110.268217.1365996520440.JavaMail.root@redhat.com> <20130415055627.GB4207@osiris> <516B9B57.6050308@redhat.com> <20130416075047.GA4184@osiris> <516D044B.3040300@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <516D044B.3040300@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Simon Jeons Cc: Zhouping Liu , linux-mm@kvack.org, LKML , caiqian , Caspar Zhang , Martin Schwidefsky On Tue, Apr 16, 2013 at 03:56:59PM +0800, Simon Jeons wrote: > Hi Heiko, > >If you have some time, could you please repeat your test with the kernel > >command line option " user_mode=home "? > > What's the meaning of this command line? I can't find it in > Documentation/kernel-parameters.txt/ It switches the architectural address space where kernel and user space reside in. We only recently switched the default address space for user space from home space to primary space, since that's needed for kvm. The user space runs in home space mode will be removed in the future; we keep it currently as fallback, just in case something breaks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org