Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp7016174ybi; Thu, 13 Jun 2019 08:11:47 -0700 (PDT) X-Google-Smtp-Source: APXvYqxNQajL/JfIUydFeJbte+gKwntDO+mL3NusXnPx2xDMOHP0pP9YSAr9pu/eLayQd+GXP7jE X-Received: by 2002:a17:90a:71cb:: with SMTP id m11mr5854468pjs.40.1560438707615; Thu, 13 Jun 2019 08:11:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560438707; cv=none; d=google.com; s=arc-20160816; b=meEV+d/rLrYIAkWOfDBOsfOA1H9IEhFbfpsHiq0RH1zqQPiklr0AqfXiMzuQ9t8fWf 8CQO96dEanwhkE828Ff9Ib8ThQm/LbFXDPoDuW8YIbe94gfBGJmnwBfplY0H7Twi3lTD 1pGsauBGwyEDYjtiEbdEpEtbWz7wKpS96EgctDHMWSGUgbX6pz41UOj0de/uLBwIYRKY 7mlA3dtV9DmX8HY4ARtARPrBfEhbmxFnnKC7FdJ/zLzFS/wVI/pUy8tJ+ESaCvp/tNE7 uR3fwrQWGiqGDivwFp0pfIxcGjPh88nX7nWcSmHURUtua4Xj631j/Phk9QDzeYidoNV5 SiHQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:subject:cc:to:from:date:user-agent :message-id:dkim-signature; bh=EfkBDDJMAt8xHDi7ZXze+FifO3HHeyNpCl8Ua4IB4Hw=; b=PMZ1q98r9RpdlA2G6jHnCebAxm3HJxjaHZzhK3InVBOSVtvJD31Fumwe5yOnRLiRNH ehQeuHRj7EIaXq1g/dpQp14+5j/83xvsEvBLDJ/DxNQkRKC5oMsAFHLurFB632RhMGjh nWypwMYCZ5v0CD70diKOAmHZChGmjFQeiTfgcOskS1yNOXoRjkCwwCRv6D0NxVVkVcIX 7YJusWKN7U7tXI2XUEn28PLMAJiDYWaRwCzT+CJSTkZT9qGDgsggv65iAYiI955EZ1ze 4FV9y8UPCmqB3z3SsulBUh/vsba4ooZRDcdnpQpcgNd/TKTU2RKNPFWBzRvSowG2yDtm g8fg== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=merlin.20170209 header.b=sJaw5Jvm; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id m25si31605pgv.481.2019.06.13.08.11.32; Thu, 13 Jun 2019 08:11:47 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=merlin.20170209 header.b=sJaw5Jvm; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387733AbfFMPJl (ORCPT + 99 others); Thu, 13 Jun 2019 11:09:41 -0400 Received: from merlin.infradead.org ([205.233.59.134]:49624 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732353AbfFMN5Q (ORCPT ); Thu, 13 Jun 2019 09:57:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Subject:Cc:To:From:Date:Message-Id: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=EfkBDDJMAt8xHDi7ZXze+FifO3HHeyNpCl8Ua4IB4Hw=; b=sJaw5Jvm/53ODTnP+j7SLhgVw uwOx8DIEUh/dq09/tZ/MYU0fn9HKlghiyako+Bm7U1uhJlNaGaqj+4T9n06SOri9YAsdvTzeRhR9L hIQL+s4VFH9fLFYpo+xs/c8LtyT1BrbAB0awMcEbrLYigGKn7yH3ZcMQovkPXlKyMBqHpe12uPgkR tstzCs2YS4vpXCa5kJTCGCdJgvztTxSeqN4vY+cajCasaKF924GBX1Qw85sBQznWR6jJcOVeDFHI/ /ZaCPUcCYMgypt5VsamGB+j8LGrv2dXj9XbqMVYG4bVXLZM3DsrccxP8Ofb9aqB0d+4buTMN2i8SZ UVhFC5sxg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hbQDy-0004GC-7a; Thu, 13 Jun 2019 13:57:06 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 01D8120316592; Thu, 13 Jun 2019 15:57:04 +0200 (CEST) Message-Id: <20190613135445.318096781@infradead.org> User-Agent: quilt/0.65 Date: Thu, 13 Jun 2019 15:54:45 +0200 From: Peter Zijlstra To: torvalds@linux-foundation.org, mingo@kernel.org, bp@alien8.de, tglx@linutronix.de, luto@kernel.org, namit@vmware.com, peterz@infradead.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH v2 0/5] x86/percpu semantics and fixes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, I still have these patches sitting in my queue and figured I'd repost them. Last time Linus proposed a "+m" alternative approach, but that generates far far worse code (I've lost the patch and not re-ran those numbers, but I suppose I can redo if found important). These patches have been through 0day for a while.