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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A1466C5478C for ; Thu, 22 Feb 2024 22:05:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=JrJNKbhj7IqhHGDauGuN54WcgvDOuZ3LpR8sPt3WS+U=; b=cxa9cHhOKqHOkL CaNMC9XYCxCTlGPHmvje9OMDpqOzY92Z1LtsDylzSkeBu9+UfPcM2o4V0DL9X8oy0Tg37RvU3d8W5 34iZ5yIOADoXRssE1QlCetFDlWXgeTI6uYjvjQKTq2TotmkAf/6Gur4KIXkt59OXthy1v67kmeuZw 9LR2L0MVyqI0W1WA256TlycCJCCk3mWPml3CvpUCpJGIpNQ+cmy/H+S7lKWk1lM1tRE0Adzuj2SBi mxvM/GdBlHdYHq+t8LuCfBLf+0nz21W7xKLD56w0VAFwsA38F0Ds1TBEXen910M9oAPy9ov7nYt1U K/RkRtfcMFggDt6nKWGg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdHCD-00000006m3n-3kyU; Thu, 22 Feb 2024 22:05:37 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdHBb-00000006ltl-48yZ for kexec@lists.infradead.org; Thu, 22 Feb 2024 22:05:33 +0000 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1708639496; 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=xXS+uiHmPKxW40P0P65T09ha/nNwEp1FEeNKV9lC8Jg=; b=m/2dyR85JIcCZGGQAeMJdxKDF024ImfMz99e5pyEMaUY+Fdv9HkWyfwbGViJcw/1GsTU9C 8DlytIkC6CfziPrs7KYoFvgFP3/Sx/czcK21SfpTS2DjTbyfhPk8O1OszRPXJQflOgeomK UiqPbaS4/7VjEl7989ZoaPpKS4NAJJQRqCRnvMCPRgLc04BR1OZrWH+dCx99XRPneivpeY Ki6y92Dd/pC+o+66J2I6p5mayn0z/fVgF6ejdRp2EOqY8uL7ewCuvnNmknT4Y4Y3t6rzM3 TZ3yF+FHuyOyV6NXNQVcgplxcJ0ZhSMrJv4VXiuFn9SD1CyP0kf0SKih2T7T6w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1708639496; 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=xXS+uiHmPKxW40P0P65T09ha/nNwEp1FEeNKV9lC8Jg=; b=3P0A8iIYNJKmKCEkHPb/QvfbAasAull6AWDpa1ZTYuv6xCjlo8gStKpcoFEdANi6im3piH WcGG495WSr94wCAw== To: "Kirill A. Shutemov" , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org Cc: "Rafael J. Wysocki" , Peter Zijlstra , Adrian Hunter , Kuppuswamy Sathyanarayanan , Elena Reshetova , Jun Nakajima , Rick Edgecombe , Tom Lendacky , "Kalra, Ashish" , Sean Christopherson , "Huang, Kai" , Baoquan He , kexec@lists.infradead.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: Re: [PATCHv7 05/16] x86/kexec: Keep CR4.MCE set during kexec for TDX guest In-Reply-To: <20240212104448.2589568-6-kirill.shutemov@linux.intel.com> References: <20240212104448.2589568-1-kirill.shutemov@linux.intel.com> <20240212104448.2589568-6-kirill.shutemov@linux.intel.com> Date: Thu, 22 Feb 2024 23:04:56 +0100 Message-ID: <87le7cduk7.ffs@tglx> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240222_140511_917355_95C806AA X-CRM114-Status: UNSURE ( 6.55 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Mon, Feb 12 2024 at 12:44, Kirill A. Shutemov wrote: > TDX guests are not allowed to clear CR4.MCE. Attempt to clear it leads > to #VE. > > Use alternatives to keep the flag during kexec for TDX guests. > > The change doesn't affect non-TDX-guest environments. > > Signed-off-by: Kirill A. Shutemov > Reviewed-by: Kai Huang Reviewed-by: Thomas Gleixner _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec