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[23.128.96.18]) by mx.google.com with ESMTP id f7si6682250jat.71.2021.05.28.10.22.19; Fri, 28 May 2021 10:22:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=dOJFTXmN; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236267AbhE1RVT (ORCPT + 99 others); Fri, 28 May 2021 13:21:19 -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.