Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757455AbYHAWEx (ORCPT ); Fri, 1 Aug 2008 18:04:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752127AbYHAWEp (ORCPT ); Fri, 1 Aug 2008 18:04:45 -0400 Received: from fg-out-1718.google.com ([72.14.220.156]:13187 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752113AbYHAWEo (ORCPT ); Fri, 1 Aug 2008 18:04:44 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-type; b=ZGtXAFJynPZOmed+begtLz/xvmhr1bIYCopODU5Rm5gSl4lmrV+45KIt0oElg0q4Zy fseQnfvL6h4okRDVsANpx+ZstXXrSN6Yq2KnVZuoRw+AtcHm9KTtWPA/PY1BdQZzV+Dt MwU63eUq2JgjMG4cz/QmdGVWEeW/WN/tbaYj4= From: Vitaly Mayatskikh To: Linus Torvalds Cc: Vitaly Mayatskikh , linux-kernel@vger.kernel.org, Andi Kleen , Ingo Molnar Subject: Re: [PATCH] x86: Optimize tail handling for copy_user References: Date: Sat, 02 Aug 2008 00:04:48 +0200 In-Reply-To: (Linus Torvalds's message of "Fri, 1 Aug 2008 13:10:25 -0700 (PDT)") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 898 Lines: 24 Linus Torvalds writes: >> Yes, I see. I was messed, sorry. Your BYTES_LEFT_IN_PAGE works very >> well, tested. >> >> Signed-off-by: Vitaly Mayatskikh > > Ok, this latest version _looks_ ok. How well tested is it? I'm a bit > nervous by now. Those earlier versions that got committed had all those > wrone registers etc. > > Anyway, Ack as far as I'm concerned, but.. Well, I have sanity test for it (at http://people.redhat.com/vmayatsk/copy_user_x8664/), but unfortunately it shows what I want to see, not the truth. I'm going to make a large regression testing next week. -- wbr, Vitaly -- 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/