From nobody Sat Apr 5 15:05:38 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1743515707; cv=none; d=zohomail.com; s=zohoarc; b=bhxRqKPRv2HluuwLUtTMaiyI//Q3bi+KrkQNiqpRblonq+s3KPuCnQjBP/eZTXsQMk02Vg/VEm0lMausTVmnhTh9M5GC3kBlvqqapUeseZ5pWFiU2j3uaIhbtbhi7Xh1APzCXBMzUcqOiK7yuh63jTFi3wNpIlNx61SRYWgWd1I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1743515707; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Pb955zOXAnOrIQdEFuBeKzNukscmTChEJPzRw+4YdrE=; b=ZdpxiVbY52hAHUv1mExsDq/HiIg9e6snwVF8eoM0NAAWSH8IawqLEq+W/yhcoYVct/XH55vyOHzXLv/tiNzaH9uEGyqv7SpQn6vWuj33/BjB71a9xDcjw1+X9VYuQ0KsGMZ6XyX4XPb8OMAs0mcLzRvhOu3HD42p8D1owtfe/NI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17435157078161008.2489436217778; Tue, 1 Apr 2025 06:55:07 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tzbuh-0000oZ-3N; Tue, 01 Apr 2025 09:44:23 -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 1tzbu0-0000U9-JB for qemu-devel@nongnu.org; Tue, 01 Apr 2025 09:43:58 -0400 Received: from mgamail.intel.com ([192.198.163.16]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tzbty-0006Zf-SI for qemu-devel@nongnu.org; Tue, 01 Apr 2025 09:43:40 -0400 Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2025 06:42:40 -0700 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by fmviesa008.fm.intel.com with ESMTP; 01 Apr 2025 06:42:38 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1743515019; x=1775051019; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=cAro8MzxFmRGhh9aV6WIQcVxy6QrVJYyqaC9eDj7okM=; b=CO93svLPrdU0thOky8w7wgZgfrlF+75BvVE8lnQRKN1CE9F8o7W6GE+L Dd+tVQU07ftrk+NRPKdBYsROx00Fh7Kf103z+ej/FCwYQoOhTXq8tz0DD wgtGaUBOdtDV2pYs5xASi+P6ATsbtnDrHLIZy+QcP2mHxfswqD6J6LnK1 Uv1XJUYUuh1zIJTIag3SHLuzrTLGwjqB+vMpQisZxLwtE1iJNOo1cl7Hd YtEI7A2IRPoFNHDR51kP3XpXFdl4Mrohwq033YOrlW8Aw5+Rb9nQhjRHQ 0JVh4jkYwMhLToh+z+oMfbqqH9k/wl72ZehODjh+Hj9LJOGzTvkV8p8E3 Q==; X-CSE-ConnectionGUID: jiXApwvwRNW5pABHh4lkiw== X-CSE-MsgGUID: pSc6p5KzRCimV7wTMhL+uA== X-IronPort-AV: E=McAfee;i="6700,10204,11391"; a="32433460" X-IronPort-AV: E=Sophos;i="6.14,293,1736841600"; d="scan'208";a="32433460" X-CSE-ConnectionGUID: h39X+B+yS9urmiKsWvvY4g== X-CSE-MsgGUID: be4NTG0ARhGb5pVSGoXFfA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,293,1736841600"; d="scan'208";a="126640129" From: Xiaoyao Li To: Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Cc: "Michael S. Tsirkin" , Markus Armbruster , Francesco Lavra , Marcelo Tosatti , qemu-devel@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Rick Edgecombe , Xiaoyao Li Subject: [PATCH v8 35/55] i386/tdx: Set kvm_readonly_mem_enabled to false for TDX VM Date: Tue, 1 Apr 2025 09:01:45 -0400 Message-Id: <20250401130205.2198253-36-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250401130205.2198253-1-xiaoyao.li@intel.com> References: <20250401130205.2198253-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.198.163.16; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.997, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.999, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1743515709973019000 Content-Type: text/plain; charset="utf-8" TDX only supports readonly for shared memory but not for private memory. In the view of QEMU, it has no idea whether a memslot is used as shared memory of private. Thus just mark kvm_readonly_mem_enabled to false to TDX VM for simplicity. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- target/i386/kvm/tdx.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index b0616eb3d371..a816f57043f6 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -386,6 +386,15 @@ static int tdx_kvm_init(ConfidentialGuestSupport *cgs,= Error **errp) return -EOPNOTSUPP; } =20 + /* + * Set kvm_readonly_mem_allowed to false, because TDX only supports re= adonly + * memory for shared memory but not for private memory. Besides, wheth= er a + * memslot is private or shared is not determined by QEMU. + * + * Thus, just mark readonly memory not supported for simplicity. + */ + kvm_readonly_mem_allowed =3D false; + qemu_add_machine_init_done_notifier(&tdx_machine_done_notify); =20 tdx_guest =3D tdx; --=20 2.34.1