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=-2.3 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 9DFBBC43441 for ; Tue, 27 Nov 2018 08:46:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A01F20989 for ; Tue, 27 Nov 2018 08:46:25 +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="TdGxaNuK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A01F20989 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 S1729640AbeK0Tnc (ORCPT ); Tue, 27 Nov 2018 14:43:32 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:47268 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728882AbeK0Tnc (ORCPT ); Tue, 27 Nov 2018 14:43:32 -0500 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=iuLp4s6y6rj8RCZL9CaZJBkgCZjGAysoZ45iIheC+Z0=; b=TdGxaNuKop2qu8Ua35NAS4gEh Gpex6VwWKUeSOKRNR3Dbclxd8stoID24o4aVB/V8MIukvjjEHmaspDSsqz0A21qg0Asb5J/omyxFU 5Gajr7lhiETIJI9uFX6WFNZBtLnr0spCpTEtwdOaP/ezhyNWlL1mWWQwK+le2WjLT9Ntmt0JzaDIH 5IcBGTr1o8ARWY+9PJnKKJtyxLICAF7ljlmJFXgLl47GL9DIrln6K+vitSErMQhAecOMxs2IAQDls PupXfTU4r+u/gwzSMyuy2O1QX6MNUNsnlbTu5crib9ycfN3bA4mjcNFGi9qZz7ibIWpR9fVsVK1IQ ydl4EsyRg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gRZ0W-0007qP-P4; Tue, 27 Nov 2018 08:46:13 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 792EE2029FD58; Tue, 27 Nov 2018 09:46:05 +0100 (CET) Date: Tue, 27 Nov 2018 09:46:05 +0100 From: Peter Zijlstra To: Josh Poimboeuf Cc: Andy Lutomirski , X86 ML , LKML , Ard Biesheuvel , Steven Rostedt , Ingo Molnar , Thomas Gleixner , Linus Torvalds , Masami Hiramatsu , Jason Baron , Jiri Kosina , David Laight , Borislav Petkov , julia@ni.com, jeyu@kernel.org, "H. Peter Anvin" Subject: Re: [PATCH v2 4/4] x86/static_call: Add inline static call implementation for x86-64 Message-ID: <20181127084605.GY2113@hirez.programming.kicks-ass.net> References: <62188c62f6dda49ca2e20629ee8e5a62a6c0b500.1543200841.git.jpoimboe@redhat.com> <20181126160217.GR2113@hirez.programming.kicks-ass.net> <20181126171036.chcbmb35ygpxziub@treble> <20181126201449.xepvj3owldkrsvgr@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181126201449.xepvj3owldkrsvgr@treble> 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 Mon, Nov 26, 2018 at 02:14:49PM -0600, Josh Poimboeuf wrote: > On Mon, Nov 26, 2018 at 10:28:08AM -0800, Andy Lutomirski wrote: > > Can you add a comment that it will need updating when kernel CET is added? > > Will do, though I get the feeling there's a lot of other (existing) code > that will also need to change for kernel CET. Yeah, function graph tracer and kretprobes at the very least. But I suspect there's a few surprises to be hand once they try kernel CET.