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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61480C05027 for ; Thu, 26 Jan 2023 21:25:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B7E2C6B0074; Thu, 26 Jan 2023 16:25:48 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B2DE96B0075; Thu, 26 Jan 2023 16:25:48 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9F5EC8E0001; Thu, 26 Jan 2023 16:25:48 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 8E0F36B0074 for ; Thu, 26 Jan 2023 16:25:48 -0500 (EST) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 645A6806EC for ; Thu, 26 Jan 2023 21:25:48 +0000 (UTC) X-FDA: 80398232376.10.7B42AD4 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf29.hostedemail.com (Postfix) with ESMTP id AAFB012000A for ; Thu, 26 Jan 2023 21:25:45 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=t0YubjSr; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf29.hostedemail.com: domain of jarkko@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=jarkko@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1674768345; h=from:from:sender: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:dkim-signature; bh=A8AhChqU6WV7ykIEib7CnX9okFLNP8SqWVdi4F7Gv/g=; b=qjwKx8uJ3/mKEID55ZNHupdJIsoSr4WCqslH0DWnICO4ER6aT4G++GSZjHop1xpL8YzrzL 1MeBpOGzRxp2h5MMKEcs28MMvvLqNiyvwzVHB+IoLP038PY8bEXo+ofyagCEJR184NtCnK R8uDx3xC98ldXuUrsjTXRjTGSyZtzes= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=t0YubjSr; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf29.hostedemail.com: domain of jarkko@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=jarkko@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1674768345; a=rsa-sha256; cv=none; b=GccMw8QuthMMawwbMR9roD5IYWYP5iGHxtuXTQL9LMNxKg9viKMmiqRwebHW+HgsCD29Qp 5BJdIid+i28ZkYLxHw6WkxzpWQDzgZdsHFKSDkjDunWiMHwd//7ZGMLPfRqVqTzGTNoF0O TSXPahDnhAxw0C/i0UXOvFcKkNe73fw= Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2A7CFB81F25; Thu, 26 Jan 2023 21:25:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 548D2C433D2; Thu, 26 Jan 2023 21:25:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674768342; bh=l0Zu8iIrldR2UdBT8hZ4gHGIUEy3EDsOun6BQFWhokg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=t0YubjSrKMW8vSsWkSdr/4Myl+5dSI9ia2kr4LIeXQ1OQP2FM8Eh/dDexFNEwl5cG 8ufJH0uQn3UXphqct9gaEaImNF8ghCGQgqypnch95wp532zrbiUo8ZqMUt77kSYKHs lhYV+gclqQzVbZ+fAPORNgX7uWeY+dWR9Sq8MhQ4rOL+TC8QjvYekGKZEGCNPpfv8b di3MMIexrbGo1alA4a50vLYIMO/d1+gfiHhTAxhOvvkm8DsGHIzUdZLFjeIyuQMlhH zSSPrODVBQCNwfYn5xedaFwqnlA8BeB/I0SxKkuY6VQVpmrxi/u63REoQtkqGnrN0h VezmjkZ07iGmA== Date: Thu, 26 Jan 2023 21:25:40 +0000 From: Jarkko Sakkinen To: "Kalra, Ashish" Cc: Michael Roth , kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, pbonzini@redhat.com, seanjc@google.com, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, dovmurik@linux.ibm.com, tobin@ibm.com, bp@alien8.de, vbabka@suse.cz, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, marcorr@google.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, dgilbert@redhat.com, harald@profian.com, Brijesh Singh , Pavan Kumar Paluri Subject: Re: [PATCH RFC v7 37/64] KVM: SVM: Add KVM_SNP_INIT command Message-ID: References: <20221214194056.161492-1-michael.roth@amd.com> <20221214194056.161492-38-michael.roth@amd.com> <16523f06-bb08-c4f9-bdfa-745fee553a43@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <16523f06-bb08-c4f9-bdfa-745fee553a43@amd.com> X-Rspamd-Queue-Id: AAFB012000A X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: cxbb4n7shmyrrzyau5d59q654zpbuze9 X-HE-Tag: 1674768345-376583 X-HE-Meta: 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 4OqO8zVj htmyhIrHotAVQ0Pyxauq8l6NPlR32F+YZLDNKA1Iv8Np8yRxOejbOdsTJ3LFro6BRAEcvmhg59wXEwrCMsW2k4RFCXh5IjjeCCWgCuEHGEJU50UnEAePgizOM1fuWTF/zo51X0yFkWpu7dp+AcTwL5CRyt5BWQHjM+RXgmpmHn5mhXp4u+pz4salPsPQtfk7/12HoIYi1KzJWZsKz6i5vB392jxdxc9e5JllZHKOosC7t13X44oZ1n0/h571xUhFU4ufjtPvPBr4ELxzXRefEtvMRjPyJVmEOo12cPX0M4aoDnBu814zw0cri/Ry0AyJvhIqGNVxFoxGZs4gsUPRe5HotgQG0Dwc/gGZ4 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Jan 23, 2023 at 04:49:14PM -0600, Kalra, Ashish wrote: > There was an early firmware issue on Genoa which supported only SNP_INIT or > SEV_INIT, but this issue is resolved now. > > Now, the main constraints are that SNP_INIT is always required before > SEV_INIT in case we want to launch SNP guests. In other words, if only > SEV_INIT is done on a platform which supports SNP we won't be able to launch > SNP guests after that. > > So once we have RMP table setup (in BIOS) we will always do an SNP_INIT and > SEV_INIT will be ideally done only (on demand) when an SEV guest is > launched. OK, thanks for the clarification! BR, Jarkko