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=-2.4 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, 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 20B13C28CF6 for ; Fri, 3 Aug 2018 14:48:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD361208EB for ; Fri, 3 Aug 2018 14:48:39 +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="evWn+WKj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD361208EB 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 S1732336AbeHCQpR (ORCPT ); Fri, 3 Aug 2018 12:45:17 -0400 Received: from merlin.infradead.org ([205.233.59.134]:42954 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726115AbeHCQpR (ORCPT ); Fri, 3 Aug 2018 12:45:17 -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=yKK1BsZYPKJJ8bsxV0UZP/zXtx25ocecWUvgN/2198s=; b=evWn+WKjzRpRFLJrWT9Qrx7/W FSjOEk/Pl7NAmO/RG0KwxutxmM6U/BWaRC3wN9BfMQIrvk4JwigrBsLz6ejpOshsRevnfXKm9kUIt k+yKige0HlmKdssf139fxrPSL3CbB/6v08a7PLAPzZTTShb5w6q+5PD3jCbcF1cjkcfsyShtW4QeT 5szZp+IdjuYYfjBNYvNfFWqipXtxbxBk1hnMXTkU79N/CDQVRe1id9zhvNs7rvZ/qgDjAFvZrkKb9 bR7JN9hnxuNVUMIr1T7fJ7H27TX7aBWysE4HIwdh3U54zbPVwwlXlglRxHx966Vwrn0d7KSwSO5hi dQUgRqd+Q==; 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 1flbNU-0006nd-J1; Fri, 03 Aug 2018 14:48:28 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 367C720267E4F; Fri, 3 Aug 2018 16:48:26 +0200 (CEST) Date: Fri, 3 Aug 2018 16:48:26 +0200 From: Peter Zijlstra To: Dave Hansen Cc: Thomas Gleixner , Reinette Chatre , fenghua.yu@intel.com, Tony Luck , vikas.shivappa@linux.intel.com, gavin.hindman@intel.com, jithu.joseph@intel.com, mingo@redhat.com, "H. Peter Anvin" , x86@kernel.org, LKML Subject: Re: [RFC PATCH 0/7] x86/intel_rdt: Restoration of Cache Pseudo-Locked regions Message-ID: <20180803144826.GL2458@hirez.programming.kicks-ass.net> References: <3a33c9e9-4432-dbef-c3b7-a4da1740b0f7@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3a33c9e9-4432-dbef-c3b7-a4da1740b0f7@intel.com> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 03, 2018 at 07:23:27AM -0700, Dave Hansen wrote: > On 08/03/2018 04:45 AM, Thomas Gleixner wrote: > >> Within the kernel two locations with direct invocations of the WBINVD > >> instruction are coverted to native_wbinvd() and compile tested. Neither > >> location is likely to be used on the platforms supporting Cache Pseudo-Locking. > > Can we just get rid of WBINVD? > > In general, or just this specific case? In general I think. There aren't that many users IIRC.