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 482C3C64EC7 for ; Tue, 28 Feb 2023 20:56:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229518AbjB1U4V (ORCPT ); Tue, 28 Feb 2023 15:56:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229722AbjB1U4S (ORCPT ); Tue, 28 Feb 2023 15:56:18 -0500 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2F4C20577 for ; Tue, 28 Feb 2023 12:56:17 -0800 (PST) Received: from zn.tnic (p5de8e9fe.dip0.t-ipconnect.de [93.232.233.254]) (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 7C3E21EC0691; Tue, 28 Feb 2023 21:56:16 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1677617776; 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:in-reply-to:in-reply-to: references:references; bh=iR9ibPzfkZJv7ygUQlIWXNmio9aKTjhZm11akaOcsJw=; b=aG028S0/zsYSfv4OaqZFPF8KK5Hhez3naiw60P2Ucu/Wo+xbsMai0HFow76rX5k8XelPEv VCrbeoqNw9OEcEbmpTwXYbpPbhPtJUVedoN4J4RUJTCkhvzG2O6oP/UuV/nM23tdAzdGty 5zxw8Zn+d7zU60e98ktxG0LIhYhmp84= Date: Tue, 28 Feb 2023 21:56:12 +0100 From: Borislav Petkov To: Alexander Monakov Cc: Andrew Cooper , Tavis Ormandy , linux-kernel@vger.kernel.org, x86@kernel.org Subject: Re: x86: AMD Zen2 ymm registers rolling back Message-ID: References: <0371ec3d-0899-f94a-7f21-21d805df2927@citrix.com> <4737f149-c5b7-8a51-7cc5-8bda6e98308b@ispras.ru> <3d007f98-a42a-3c0e-8d6a-c86c5d0e25be@ispras.ru> <4d21fe93-7b77-bf5a-9ba8-645256ab0983@ispras.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4d21fe93-7b77-bf5a-9ba8-645256ab0983@ispras.ru> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 28, 2023 at 10:29:23PM +0300, Alexander Monakov wrote: > That I can reproduce the bug even with the latest BIOS, Can you reproduce if you boot with clearcpuid=xsaves ? CONFIG_X86_FEATURE_NAMES must be enabled in your .config for that to work. Otherwise, try clearcpuid=323 Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette