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 6B893CAC597 for ; Thu, 18 Sep 2025 10:32:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uzBuf-00078U-J9; Thu, 18 Sep 2025 06:30:53 -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 1uzBud-00076p-OI for qemu-devel@nongnu.org; Thu, 18 Sep 2025 06:30:51 -0400 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e: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 1uzBuS-0001NV-P4 for qemu-devel@nongnu.org; Thu, 18 Sep 2025 06:30:51 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 2148B408F6; Thu, 18 Sep 2025 10:30:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4369DC4CEEB; Thu, 18 Sep 2025 10:30:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758191439; bh=B7JHk9fWDpqUfKVj1TLxQafQWshyOG1fenZVw/oaq9A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uE1t75Hff9IOa0GmD64eZ6wkalnBLB3pvn0CI39jiQqtP6LbUTmUptk6ZJdYUBYfh yNxgQmhVpYsTQodWbf5HdwRNVglTECoF9Ri54omvfqVdAoaQaKB4yCoSnJJOxyOt00 EdvlIy/72j5jN/iE9RAZFqovAGLdwn9WYC9XWmafjUeSfoYElHYYq0hDvjonAGwv1Z jLz/TLox3a4ZuuNWAwvWRkLGB9N4bWBB04nnmQkhKQ9hm+suyoRdzg+lee8WaT3lKo H/xosADVCD9LtVUNKIkLUIlAx47YQnLM14r+w0ZJaKr3oKQhWzN6anpdfDbgDO2m5y zbT/469fNqyaw== 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 6/8] target/i386: SEV: Enable use of KVM_SEV_INIT2 for SEV-ES guests Date: Thu, 18 Sep 2025 15:57:04 +0530 Message-ID: <4d14083f34e3196a1ef179a958e30e800b5263fe.1758189463.git.naveen@kernel.org> 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=2600:3c0a:e001:78e:0:1991:8:25; envelope-from=naveen@kernel.org; helo=sea.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 Now that users can enable VMSA SEV features, update sev_init2_required() to return true if any SEV features are requested. This enables qemu to use KVM_SEV_INIT2 for SEV-ES guests when necessary. Sample command-line: -machine q35,confidential-guest-support=sev0 \ -object sev-guest,id=sev0,policy=0x5,cbitpos=51,reduced-phys-bits=1,debug-swap=on Reviewed-by: Nikunj A Dadhania Signed-off-by: Naveen N Rao (AMD) --- target/i386/sev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/target/i386/sev.c b/target/i386/sev.c index 4f1b0bf6ccc8..6b11359f06dd 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -1704,8 +1704,7 @@ sev_vm_state_change(void *opaque, bool running, RunState state) */ static bool sev_init2_required(SevGuestState *sev_guest) { - /* Currently no KVM_SEV_INIT2-specific options are exposed via QEMU */ - return false; + return !!SEV_COMMON(sev_guest)->sev_features; } static int sev_kvm_type(X86ConfidentialGuest *cg) -- 2.51.0