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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 5A804C2B9F7 for ; Fri, 28 May 2021 17:19:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B61B613B6 for ; Fri, 28 May 2021 17:19:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236355AbhE1RVV (ORCPT ); Fri, 28 May 2021 13:21:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230193AbhE1RVQ (ORCPT ); Fri, 28 May 2021 13:21:16 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB30AC061574 for ; Fri, 28 May 2021 10:19:40 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1622222379; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=0OyJWpXtdEE/1aJpzC8z0vyowN1eCXtwmZnV55hFPyA=; b=dOJFTXmN05nywmwcIMWLMCZ5TKIL8l+H4Esw/v3AcAy8LPSHq0/xKJJqoRG46Gby9c3QL+ KRKXLNPj8IvEzwwBWdIiutH2l+xnLCb4sRsOihqYUAlkHc+Ve3PR1LCDrKRkhLZKb9cvhd dJDJFMdafa5bSSrElcLPXxpCNcOKumItBzZkzFxU3aukdUWnkO0bP7x508WXdgA6ma4D1C uMhn4gXactqza4Qw3oytaWY+Bc8h8Zd/BKR7JmWMRrzMLvMZ8tokf+aQJVjTiYL5QfoW8b b1DRsqOj6MHaSJTTC6wvxKIS3uxBQuSHxURCTApi5vRP23wuKSlR9sbqsO9Zwg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1622222379; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=0OyJWpXtdEE/1aJpzC8z0vyowN1eCXtwmZnV55hFPyA=; b=S6yFH7DPFtdpHsQJjAkQFOugeho/YX7wQB7+I7fXDpGFRxFFQdQUsjGN+3MmyY4/gt3low VsoZeRlClygksLAQ== To: Andy Lutomirski , Dave Hansen , Dave Hansen , linux-mm@kvack.org Cc: Linux Kernel Mailing List , Ingo Molnar , Borislav Petkov , the arch/x86 maintainers , shuah@kernel.org, Babu Moger , dave.kleikamp@oracle.com, linuxram@us.ibm.com, bauerman@linux.ibm.com Subject: Re: [PATCH 0/5] x86/pkeys: PKRU manipulation bug fixes and cleanups In-Reply-To: <3781d3ec-6d1b-4d04-8bed-19985115153d@www.fastmail.com> References: <20210527235109.B2A9F45F@viggo.jf.intel.com> <87eedq7u2b.ffs@nanos.tec.linutronix.de> <4c3bfc27-a542-8e91-7ccf-4be8b1e6c844@intel.com> <3781d3ec-6d1b-4d04-8bed-19985115153d@www.fastmail.com> Date: Fri, 28 May 2021 19:19:38 +0200 Message-ID: <875yz27p3p.ffs@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 28 2021 at 10:13, Andy Lutomirski wrote: > On Fri, May 28, 2021, at 9:11 AM, Dave Hansen wrote: >> I have a few concerns about moving away from XSAVE management, though. >> I'm not nixing the whole idea, but there are some things we need to resolve. >> >> First is that there _may_ be ABI concerns. > > I tend to think that, for -stable, we should fix the bug without an ABI change. See my other mail. It's trivial enough to do.