From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757656Ab2F0PTQ (ORCPT ); Wed, 27 Jun 2012 11:19:16 -0400 Received: from mail-gg0-f174.google.com ([209.85.161.174]:61822 "EHLO mail-gg0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757016Ab2F0PTO (ORCPT ); Wed, 27 Jun 2012 11:19:14 -0400 Date: Wed, 27 Jun 2012 17:19:06 +0200 From: Frederic Weisbecker To: Jiri Olsa Cc: acme@redhat.com, a.p.zijlstra@chello.nl, mingo@elte.hu, paulus@samba.org, cjashfor@linux.vnet.ibm.com, eranian@google.com, gorcunov@openvz.org, tzanussi@gmail.com, mhiramat@redhat.com, robert.richter@amd.com, fche@redhat.com, linux-kernel@vger.kernel.org, masami.hiramatsu.pt@hitachi.com, drepper@gmail.com, asharma@fb.com, benjamin.redelings@nescent.org Subject: Re: [PATCH 04/23] perf, x86: Add copy_from_user_nmi_nochk for best effort copy Message-ID: <20120627151903.GH20638@somewhere.redhat.com> References: <1340120894-9465-1-git-send-email-jolsa@redhat.com> <1340120894-9465-5-git-send-email-jolsa@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1340120894-9465-5-git-send-email-jolsa@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 19, 2012 at 05:47:55PM +0200, Jiri Olsa wrote: > Adding copy_from_user_nmi_nochk that provides the best effort > copy regardless the size crossing the task boundary at the moment. The changelog needs more info about this. Why are we removing this check? > > This is going to be useful for stack dump we need in post > DWARF CFI based unwind. > > Signed-off-by: Jiri Olsa