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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E31A7C433F5 for ; Thu, 14 Oct 2021 14:44:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C952260524 for ; Thu, 14 Oct 2021 14:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231726AbhJNOqf (ORCPT ); Thu, 14 Oct 2021 10:46:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230198AbhJNOqe (ORCPT ); Thu, 14 Oct 2021 10:46:34 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F661C061570 for ; Thu, 14 Oct 2021 07:44:29 -0700 (PDT) Received: from zn.tnic (p200300ec2f0c72008718c38cc37e4684.dip0.t-ipconnect.de [IPv6:2003:ec:2f0c:7200:8718:c38c:c37e:4684]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 148C11EC01A8; Thu, 14 Oct 2021 16:44:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1634222668; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XfaBAqU6z4wkM+UPU9qksZ3loC/MVSpSms6Ss36qZMs=; b=PByOEsokXsscd8ggGeYI0tQcNucxF8b1g10qFRhFIHNlkMfHs0BibusML8u3Ac+YK4BE9N j4rdHFI1bMefDAje5NfSWJ4u9sTMezL+sstge8Mx+E9tk6KGb4Duoz3lKjwt3XaQ1ycM2j LHBgg5esRJ+5pnfRZLw7lZHHi/QcRC8= Date: Thu, 14 Oct 2021 16:44:27 +0200 From: Borislav Petkov To: Ville =?utf-8?B?U3lyasOkbMOk?= Cc: Ser Olmy , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [regression] commit d298b03506d3 ("x86/fpu: Restore the masking out of reserved MXCSR bits") Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 14, 2021 at 05:34:14PM +0300, Ville Syrjälä wrote: > > > Tested the same disk on on both a 64bit capable Pentium D > > > and a 32bit only Pentium 4 just to rule out the specific CPU. > > > Busted on both. > > > > So that's a purely 32-bit installation and a 32-bit kernel and you've > > booted it on two different machines? > > Yes. This is insane, grrr! So Ser's report was about an old 32-bit Intel CPU failing: https://lore.kernel.org/all/YVtA67jImg3KlBTw@zn.tnic/T/#u so if we revert, it'll break booting on his machine. Can you give /proc/cpuinfo from your machines? Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette