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_PASS,USER_AGENT_MUTT autolearn=ham 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 99334C43143 for ; Mon, 1 Oct 2018 15:59:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 49D4A213A2 for ; Mon, 1 Oct 2018 15:59:25 +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="U042XaT5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 49D4A213A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726194AbeJAWhv (ORCPT ); Mon, 1 Oct 2018 18:37:51 -0400 Received: from merlin.infradead.org ([205.233.59.134]:37860 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725735AbeJAWhv (ORCPT ); Mon, 1 Oct 2018 18:37:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=C6nsrFJ9whuEb9Un2iA7/Rye+yRRBPij6H7JEN+5Cc8=; b=U042XaT5a1FR5eZcPUMAyIGXC NOE+bMs+6BXHaL5hvJnvwBqOMes7UMpaH0Ekb2CzDGfkKlz5iXAILOx6JDYoq8KWX8DDqgQ3YMmNQ LREN6CVP6sS4tGNmwtAS1NgGmUZLOGEdieFkHBTJ6LLH9uw0nF6IjNESFYzue7bwKGZZAdvNg8orC w7u7odgf/aA/5zckrQE6ukM2qPcU6tzvFNknPOKJe+lVNsXtgQ5LiPYY3tLGOUuZDp/IolHBI2PgZ a6eZpcdJfgDs9aFuAa7a6de4xQXIlZa+lz1HIxwggd1XKv4E1GUlkpFGMtUBAFEMS9z3zF3iTYL8a 8ahnO5kTQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1g70b8-0006ar-Dw; Mon, 01 Oct 2018 15:59:03 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3761B2075FAA7; Mon, 1 Oct 2018 17:58:57 +0200 (CEST) Date: Mon, 1 Oct 2018 17:58:57 +0200 From: Peter Zijlstra To: Rik van Riel Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, will.deacon@arm.com, songliubraving@fb.com, mingo@kernel.org, luto@kernel.org, hpa@zytor.com, npiggin@gmail.com, Linus Torvalds , Thomas Gleixner , efault@gmx.de Subject: Re: [PATCH 1/7] x86/mm/tlb: Always use lazy TLB mode Message-ID: <20181001155857.GK3439@hirez.programming.kicks-ass.net> References: <20180926035844.1420-1-riel@surriel.com> <20180926035844.1420-2-riel@surriel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180926035844.1420-2-riel@surriel.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 Tue, Sep 25, 2018 at 11:58:38PM -0400, Rik van Riel wrote: > Now that CPUs in lazy TLB mode no longer receive TLB shootdown IPIs, except > at page table freeing time, and idle CPUs will no longer get shootdown IPIs > for things like mprotect and madvise, we can always use lazy TLB mode. But that's only so at the end of this patch series; either change the Changelog or the location of this patch?