Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp2257609pxb; Mon, 18 Jan 2021 12:33:33 -0800 (PST) X-Google-Smtp-Source: ABdhPJzMRfb512zIspoziBLhrzOnyR28rQkO/uH5HBX0EvwWUn9xHjzeC8AkLdb1cT9yNfN7WdKK X-Received: by 2002:a17:906:4694:: with SMTP id a20mr831695ejr.201.1611002013545; Mon, 18 Jan 2021 12:33:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611002013; cv=none; d=google.com; s=arc-20160816; b=L05v1ouKyzrSshblE5pbE74qD2LrpeE16AVxfEOS6bC0NJxKAdY6E0wiv1L3x2KiGz PdVYd5zvJdkA9CyJdMxKxPOfotHreDI4GqT1LTEbe2ZmGHXYD2tYqgor5MbJGM1cs5eR HXw1HDui4xQDC8Y1ZqJwAdYwedYzrLSYwR8N0khBIDXKfbLSAEzLHt3oT7bj+LGnbDFW Eul//h3qeoeiUYjxl6NIVQbw203T2nj9aTLRzAiHnxN3lpWEH0Ok1vPdrGhkGbwc1/30 lGx/VIPwyjX8SY00xQ3+gJpsi9uYvl1w7yucn65Gk1tBvHdMN7RsW0vaWevuLQ2jdboT 7xGw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=cIG/RqO5JFDYb15YAf8/e61/XxXDZVIp5xUGVF2yUvY=; b=GKh5rsqZwM4VOfclwH1+hgtnxE3l80yC1a15B8Nj7oS0Q+Mc3ndGfYxO7IxtkMLmOP 6P93Vohb6uaPDCBBuia3ro/fP10k2/VrY9kvAfQ4QapptD6+tsD+A5JWc4ox40WWSOEm RWNnBKr+q8wTkOgfnVuncRoS5mhbk5lZQ0LMIxctcxKg4SmDOIesAEOQLXKE4XaG6ISp M9UKBNR4wzLRc+1IkRHTNkc68qs+GULHVwe/ayXarRKLcEhO3NVANv599EZoD9BnyBh/ thYSVUB+Ajorb6eErbCveGlB/haluSa0j6pCnWU513ls5RQt9WjSblvPya5cN9aJ58hP DTdQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=MpPyuIfc; 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=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b21si8200710ejz.649.2021.01.18.12.33.09; Mon, 18 Jan 2021 12:33:33 -0800 (PST) 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=@alien8.de header.s=dkim header.b=MpPyuIfc; 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=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394336AbhARUaZ (ORCPT + 99 others); Mon, 18 Jan 2021 15:30:25 -0500 Received: from mail.skyhub.de ([5.9.137.197]:50678 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394211AbhARUaM (ORCPT ); Mon, 18 Jan 2021 15:30:12 -0500 Received: from zn.tnic (p200300ec2f069f0062c4736095b963a8.dip0.t-ipconnect.de [IPv6:2003:ec:2f06:9f00:62c4:7360:95b9:63a8]) (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 21BE01EC04F0; Mon, 18 Jan 2021 21:29:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1611001771; 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=cIG/RqO5JFDYb15YAf8/e61/XxXDZVIp5xUGVF2yUvY=; b=MpPyuIfc7DDypx2lEYCKWhuc3Wk1aGegxprSLXycDpMcX2hp6izTV9LoS+clIRpKKsTZLH xyiBE/lnlMo7KFz5WnoblI7J4pbcED0QXrZjZxJZ4p4vNbFbpnfs7/MExXFvnVmcP5p3X8 DjotxmnRtecHYy5TcbMfYI1HhFMubAE= Date: Mon, 18 Jan 2021 21:29:31 +0100 From: Borislav Petkov To: Sean Christopherson Cc: Thomas Gleixner , Ingo Molnar , x86@kernel.org, Andy Lutomirski , Paolo Bonzini , Dave Hansen , Peter Zijlstra , "H. Peter Anvin" , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Tom Lendacky , Brijesh Singh Subject: Re: [PATCH] x86/sev: Add AMD_SEV_ES_GUEST Kconfig for including SEV-ES support Message-ID: <20210118202931.GI30090@zn.tnic> References: <20210116002517.548769-1-seanjc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210116002517.548769-1-seanjc@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 15, 2021 at 04:25:17PM -0800, Sean Christopherson wrote: > Introduce a new Kconfig, AMD_SEV_ES_GUEST, to control the inclusion of > support for running as an SEV-ES guest. Pivoting on AMD_MEM_ENCRYPT for > guest SEV-ES support is undesirable for host-only kernel builds as > AMD_MEM_ENCRYPT is also required to enable KVM/host support for SEV and > SEV-ES. Huh, what? I'm not sure I understand what you're trying to say here and am not convinced why yet another Kconfig symbol is needed? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette