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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5A12C4332F for ; Fri, 10 Nov 2023 18:30:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346157AbjKJSag (ORCPT ); Fri, 10 Nov 2023 13:30:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235542AbjKJS1a (ORCPT ); Fri, 10 Nov 2023 13:27:30 -0500 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D668737AE2; Fri, 10 Nov 2023 05:42:37 -0800 (PST) Received: from [192.168.2.41] (77-166-152-30.fixed.kpn.net [77.166.152.30]) by linux.microsoft.com (Postfix) with ESMTPSA id 4373720B74C0; Fri, 10 Nov 2023 05:42:33 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 4373720B74C0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1699623757; bh=iQJfXDlwXXwcx9/wg4dueoqnKk6YMfmTC6RexGNDY4A=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ErKgrXTGftVur9/Ow+eAuaZY4sLViWM9WBtEAVYyJhjPhUsNeKpbwtw2XpeJCeSyi j8w8W4QdYqDPgcJVbaMaZKxa0xWozSMlrF0LPePWlnoFWf/RscBUqP+5SGEu161UJJ WbbGATDDK61hMzFIKfOetfNONl0yc0+P4Wh1vk88= Message-ID: <5a80bfd8-7092-4a85-93a6-189a16725642@linux.microsoft.com> Date: Fri, 10 Nov 2023 14:42:31 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/mm: Check cc_vendor when printing memory encryption info Content-Language: en-US To: kirill.shutemov@linux.intel.com Cc: Dave Hansen , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , linux-kernel@vger.kernel.org, Michael Kelley , Dexuan Cui , linux-hyperv@vger.kernel.org, stefan.bader@canonical.com, tim.gardner@canonical.com, roxana.nicolescu@canonical.com, cascardo@canonical.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, sashal@kernel.org References: <1699546489-4606-1-git-send-email-jpiotrowski@linux.microsoft.com> <16ea75a9-8c94-4665-ae04-32d08aa4ebb2@intel.com> <58abbc79-64d4-41f9-9fd2-1de7826fbbf6@linux.microsoft.com> <20231110120601.3mbemh6djdazyzgb@box.shutemov.name> <6feecf9e-10cb-441f-97a4-65c98e130f7a@linux.microsoft.com> <20231110124626.ifq3hqaiqvgpnign@box> From: Jeremi Piotrowski In-Reply-To: <20231110124626.ifq3hqaiqvgpnign@box> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/11/2023 13:46, kirill.shutemov@linux.intel.com wrote: > On Fri, Nov 10, 2023 at 01:27:08PM +0100, Jeremi Piotrowski wrote: >>> Maybe just remove incorrect info and that's it? >>> >> >> I disagree, other users and I find the print very useful to see which coco >> platform the kernel is running on and which confidential computing features >> the kernel detected. I'm willing to fix the code to report correct info. > > For TDX, we already have "tdx: Guest detected" in dmesg. sme_early_init() > can do something similar. > That doesn't cover TDX guests with TD partitioning on Hyper-V.