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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 A8B0BC31E54 for ; Sun, 16 Jun 2019 22:28:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8137B20866 for ; Sun, 16 Jun 2019 22:28:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727441AbfFPW2c (ORCPT ); Sun, 16 Jun 2019 18:28:32 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:42141 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725811AbfFPW2c (ORCPT ); Sun, 16 Jun 2019 18:28:32 -0400 Received: from p5b06daab.dip0.t-ipconnect.de ([91.6.218.171] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1hcddU-0000Ux-NY; Mon, 17 Jun 2019 00:28:28 +0200 Date: Mon, 17 Jun 2019 00:28:27 +0200 (CEST) From: Thomas Gleixner To: Andy Lutomirski cc: Dave Hansen , Marius Hillenbrand , kvm list , LKML , Kernel Hardening , Linux-MM , Alexander Graf , David Woodhouse , the arch/x86 maintainers , Peter Zijlstra Subject: Re: [RFC 00/10] Process-local memory allocations for hiding KVM secrets In-Reply-To: Message-ID: References: <20190612170834.14855-1-mhillenb@amazon.de> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="8323329-1576819727-1560724108=:1760" X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-1576819727-1560724108=:1760 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT On Sun, 16 Jun 2019, Andy Lutomirski wrote: > On Fri, Jun 14, 2019 at 7:21 AM Thomas Gleixner wrote: > > On Wed, 12 Jun 2019, Andy Lutomirski wrote: > > > > > > Fair warning: Linus is on record as absolutely hating this idea. He might > > > change his mind, but it’s an uphill battle. > > > > Yes I know, but as a benefit we could get rid of all the GSBASE horrors in > > the entry code as we could just put the percpu space into the local PGD. > > > > I have personally suggested this to Linus on a couple of occasions, > and he seemed quite skeptical. The only way to find out is the good old: numbers talk .... So someone has to bite the bullet, implement it and figure out whether it's bollocks or not. :) Thanks, tglx --8323329-1576819727-1560724108=:1760--