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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA78DC433EF for ; Thu, 16 Jun 2022 11:26:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376817AbiFPL0E (ORCPT ); Thu, 16 Jun 2022 07:26:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376681AbiFPLZ7 (ORCPT ); Thu, 16 Jun 2022 07:25:59 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2DCD5E16B; Thu, 16 Jun 2022 04:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=OFa1n6K77JzaEo8adfWBAbuXdRRnUBxjmifrmcpcPP8=; b=aLxznHPjqsmQVwNHGzEIMV/gGH roKRWjSnvWHpZoEyc+I2fLUFPrNPiS7genjXmY28cyL/ozF0C4h0RIiDv6PzTRonoSr2ND+CKwMmq 46ePNMaHRTQm6+PGuM5hY6U9GhxhiyXuBVZ10g3F5ucVMj+ickYOp7sK4pbCXnYafP74ht6TlOnsr qsQGOAktItNmjYwrPa4zyq+YelZtPQnpgotl5uUaY5s7bqDphsHWELVX8UOZNzxlwqILMAHAiRvZV Q4a8uAOaZgD0Qg0JmlV8caEaw5ts4wNaAP8SSBxj/F9XDRJDcQ7RW7w+bIjPVA2NNNzWxIiR6Z/9C B0EwHOEg==; Received: from dhcp-077-249-017-003.chello.nl ([77.249.17.3] helo=worktop.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1ndG-001ttY-TX; Thu, 16 Jun 2022 11:25:51 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 8B76E980DD0; Thu, 16 Jun 2022 13:25:50 +0200 (CEST) Date: Thu, 16 Jun 2022 13:25:50 +0200 From: Peter Zijlstra To: Christoph Hellwig Cc: Yang Weijiang , pbonzini@redhat.com, seanjc@google.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, rick.p.edgecombe@intel.com Subject: Re: [PATCH 00/19] Refresh queued CET virtualization series Message-ID: References: <20220616084643.19564-1-weijiang.yang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 16, 2022 at 02:10:50AM -0700, Christoph Hellwig wrote: > On Thu, Jun 16, 2022 at 04:46:24AM -0400, Yang Weijiang wrote: > > The purpose of this patch series is to refresh the queued CET KVM > > patches[1] with the latest dependent CET native patches, pursuing > > the result that whole series could be merged ahead of CET native > > series[2] [3]. > > It might be helpful to explain what CET is here.. Central European Time ofc :-) I think it stands for Control-flow Enforcement Technology or something along those lines, but this being Intel it loves to obfuscate stuff and make it impossible to understand what's being said to increase the buzzword bong hits. Its a mostly pointless umbrella term for IBT (Indirect Branch Tracking) and SHSTK (SHadow STacK), the first of which covers forward edge control flow and the second covers backward edge control flow.