Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753237AbbDGLFj (ORCPT ); Tue, 7 Apr 2015 07:05:39 -0400 Received: from mail-wg0-f49.google.com ([74.125.82.49]:36603 "EHLO mail-wg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751162AbbDGLFf (ORCPT ); Tue, 7 Apr 2015 07:05:35 -0400 Date: Tue, 7 Apr 2015 13:05:31 +0200 From: Ingo Molnar To: Borislav Petkov Cc: Linus Torvalds , Sasha Levin , LKML , Rusty Russell , Dave Jones , Michal Hocko , the arch/x86 maintainers Subject: Re: Hang on large copy_from_user with PREEMPT_NONE Message-ID: <20150407110531.GA14136@gmail.com> References: <552204B8.40605@oracle.com> <5522D9A8.5080104@oracle.com> <20150407093145.GA10348@gmail.com> <20150407103955.GB14095@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150407103955.GB14095@pd.tnic> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 753 Lines: 23 * Borislav Petkov wrote: > On Tue, Apr 07, 2015 at 11:31:45AM +0200, Ingo Molnar wrote: > > Would be nice to see the actual kernel .config, as there's a few > > debug features that can slow things down significantly, such as > > CONFIG_KMEMCHECK=y or in some cases CONFIG_DEBUG_PAGEALLOC=y. > > He sent it here: https://lkml.kernel.org/r/55229D7E.6080309@oracle.com > > I'm attaching it again. Thanks. Nothing particularly expensive stands out to me at a quick glance:-/ Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/