From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CC84C76190 for ; Mon, 22 Jul 2019 21:09:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2F7E9219BE for ; Mon, 22 Jul 2019 21:09:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="rGWFNPUo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730626AbfGVVJZ (ORCPT ); Mon, 22 Jul 2019 17:09:25 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:40506 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727845AbfGVVJZ (ORCPT ); Mon, 22 Jul 2019 17:09:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pY0LA8u0+TRN74LRfvbZ9clUI8/84sjDmmtXY1EVvV4=; b=rGWFNPUoxM9eF46CBWGZYiC4I 12MmieSfQODgiiA2tRe5i/NGtXNT3dyP5lUxqXFQZWoCz5UAVZD9mPmrbmP+JRDnq9yl103cyoulg 32BEnbX04xVNbYnQ/ajs6a5Y/jWPGdliZHznjbTYJYreDIKsztww+Wdy0tfhfgHyGy0gLCEj2RBu5 CVs4UcR5OKm2Uj2/bY3xnwDsZR1wn5+fN0Z093T9FJXNoH1CaA8GzeTbqLyPIEy8Q8oCOdmCcGQo3 aDcU4G0/AUgV5sfcsy5z46EENvsjsf3zRJV8Ko1KTRHyKGWFrmBP57TOyIwMIQ8StPmBnzBTk3G23 RZpO0s0cw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hpfYf-0003OI-1a; Mon, 22 Jul 2019 21:09:21 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id F1B0B980D1F; Mon, 22 Jul 2019 23:09:18 +0200 (CEST) Date: Mon, 22 Jul 2019 23:09:18 +0200 From: Peter Zijlstra To: Nadav Amit Cc: Andy Lutomirski , x86@kernel.org, linux-kernel@vger.kernel.org, Dave Hansen , Thomas Gleixner , Ingo Molnar Subject: Re: [RFC 0/7] x86/percpu: Use segment qualifiers Message-ID: <20190722210918.GM6698@worktop.programming.kicks-ass.net> References: <20190718174110.4635-1-namit@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190718174110.4635-1-namit@vmware.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 18, 2019 at 10:41:03AM -0700, Nadav Amit wrote: > GCC 6+ supports segment qualifiers. Using them allows to implement > several optimizations: Overall I like this. Nice!