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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 E5EFECAC59A for ; Thu, 18 Sep 2025 10:31:18 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uzBuV-0006yY-98; Thu, 18 Sep 2025 06:30:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uzBuK-0006wZ-EB for qemu-devel@nongnu.org; Thu, 18 Sep 2025 06:30:40 -0400 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uzBuH-0001Ld-LC for qemu-devel@nongnu.org; Thu, 18 Sep 2025 06:30:32 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id E79D36020E; Thu, 18 Sep 2025 10:30:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DAD8CC4CEE7; Thu, 18 Sep 2025 10:30:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758191426; bh=dV4uVX4HWUQHDw0uWQev5aF1tKrV/zVT0JFkQA9+V58=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kiZhMNQQqX+qwE8TUVeKT871F21iL8xvZOvQcJ/3kr9GoUC89cMk4p9n8xg38mESq fCFmTJpc0ygxKSN/MyoYzdACI2T92v3qyf/u0X37kw20U7PxXv/I4F+SXGKtMFxmny VAQwVQPiwvEjlQx0JGeqcCHw27DdSK06S5vIphII//HHDp9pvJLLuwo77XmRbTQNy8 Iwmr2xBwZWsuYhElA7eGb4Rfo31nRnOiw/pnYkD3vJAxvqlxLBn1LZmBhecbUxWNEJ mMDeW94Hgwhm2UvY8RcTz6nc3SWOzvo3moOtgS1AFGEv7kR3BYxPkmpmGind/yXLxf idBzH7Qoo89iQ== From: "Naveen N Rao (AMD)" To: Paolo Bonzini , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel , , Tom Lendacky , Nikunj A Dadhania , "Daniel P. Berrange" , Eduardo Habkost , Zhao Liu , Michael Roth , Roy Hopkins Subject: [PATCH 4/8] target/i386: SEV: Validate that SEV-ES is enabled when VMSA features are used Date: Thu, 18 Sep 2025 15:57:02 +0530 Message-ID: X-Mailer: git-send-email 2.51.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2600:3c04:e001:324:0:1991:8:25; envelope-from=naveen@kernel.org; helo=tor.source.kernel.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org SEV features in the VMSA are only meaningful for SEV-ES and SEV-SNP guests, as they control aspects of the encrypted guest state that are not relevant for basic SEV guests. Add a check in check_sev_features() to ensure that SEV-ES or SEV-SNP is enabled when any SEV features are specified. Reviewed-by: Nikunj A Dadhania Reviewed-by: Tom Lendacky Signed-off-by: Naveen N Rao (AMD) --- target/i386/sev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/i386/sev.c b/target/i386/sev.c index 7c4cd1146b9a..f6e4333922ea 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -518,6 +518,12 @@ static int check_sev_features(SevCommonState *sev_common, uint64_t sev_features, __func__); return -1; } + if (sev_features && !sev_es_enabled()) { + error_setg(errp, + "%s: SEV features require either SEV-ES or SEV-SNP to be enabled", + __func__); + return -1; + } if (sev_features & ~sev_common->supported_sev_features) { error_setg(errp, "%s: VMSA contains unsupported sev_features: %lX, " -- 2.51.0