From nobody Sat Apr 5 13:51:48 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=1743515557; cv=none; d=zohomail.com; s=zohoarc; b=jZU73LbV5ldd9ifKsC68fsVPGZt8Od1vge6hbgnStS8lt/sZCBEeZme9aIGpzwqElJdfwN3POa0d0m+hXOBP1QnuGQ59xqnk+gToIIPilE25u9oQrXTvrJ6EojWjRmh17KvH2/CwONIyNVeq+B/bGMif7cmCfjz9mgcOeVObZ+M= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1743515557; 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=y+AUEueVQhJpt25EIkvJjpV5QZUaLAvREQigMjsWXLY=; b=Ah22TKL+mkATDprxQW55L+PpkrXMVBLyTNzdq4mnYrD6x06LjoZnICdvcT0Q41sap2lXjzncU6a1lXAXUzk1MbafI3jsOAHlpFEdN7YiwKhh7qEgI+B57Pz6ZL7WY+z/CNYTRqIqvKbv3iG5j/JmfpqKHMV769aOEcBfahGeeC8= 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 174351555727565.98154289504055; Tue, 1 Apr 2025 06:52:37 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tzbwk-0003R6-B1; Tue, 01 Apr 2025 09:46:35 -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 1tzbux-0001Mf-OE for qemu-devel@nongnu.org; Tue, 01 Apr 2025 09:44:42 -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 1tzbuw-0006ZP-4K for qemu-devel@nongnu.org; Tue, 01 Apr 2025 09:44:39 -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 06:43:12 -0700 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by fmviesa008.fm.intel.com with ESMTP; 01 Apr 2025 06:43:10 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1743515078; x=1775051078; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xXJsHp6IKbQ0urWG/A57EAspFBUln9gJODiT0xlm4gY=; b=WDSgL4vHA8LQKmKWODSd3mjRB4mlsLBJX3gL0840/5Wd97r51ImG1t4Q XWs0Zhf54uQSkADI4O/sj0Nb1F6zp1QxlFkQxCGo/3EoTfxBU17iRhD0l CJnHxykRaTjRKzOqalWzxuF5NWByA2k71ctEyqkAUbCvuKTg1MlHQ82sC Yq6Vh9xem4fLLBwph1dKzBnwxR3zRNLMsG99gkKkwKrUDT9RZ9idswx5E J+4U/tSBztXZW8Bxyr7lMRu7SBIXFBtQXiOYh/IaOpH83zA9pSuiX2naZ Uq1q71Cjqwm1GauYXnYjAYwavgLZvcLje7gUzeM4bSWg6Okm2bu9jk2e3 g==; X-CSE-ConnectionGUID: A8qWQc1ySnCO4QawgW4j4g== X-CSE-MsgGUID: NdG5JK1bRL+O537OXrikBw== X-IronPort-AV: E=McAfee;i="6700,10204,11391"; a="32433552" X-IronPort-AV: E=Sophos;i="6.14,293,1736841600"; d="scan'208";a="32433552" X-CSE-ConnectionGUID: eLruHHsSQp6zcuVnYtf3zA== X-CSE-MsgGUID: AlbD/7EaT+eJ+vvVw5r3Jg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,293,1736841600"; d="scan'208";a="126640253" 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 48/55] i386/tdx: Add XFD to supported bit of TDX Date: Tue, 1 Apr 2025 09:01:58 -0400 Message-Id: <20250401130205.2198253-49-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: 1743515559451019000 Content-Type: text/plain; charset="utf-8" Just mark XFD as always supported for TDX. This simple solution relies on the fact KVM will report XFD as 0 when it's not supported by the hardware. Signed-off-by: Xiaoyao Li --- target/i386/cpu.h | 1 + target/i386/kvm/tdx.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 132312d70a54..a223e09a25c4 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1126,6 +1126,7 @@ uint64_t x86_cpu_get_supported_feature_word(X86CPU *c= pu, FeatureWord w); #define CPUID_XSAVE_XSAVEC (1U << 1) #define CPUID_XSAVE_XGETBV1 (1U << 2) #define CPUID_XSAVE_XSAVES (1U << 3) +#define CPUID_XSAVE_XFD (1U << 4) =20 #define CPUID_6_EAX_ARAT (1U << 2) =20 diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index c7b4a098d12f..e07cd9a1ee15 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -620,6 +620,11 @@ static void tdx_add_supported_cpuid_by_xfam(void) e->edx |=3D (tdx_caps->supported_xfam & CPUID_XSTATE_XCR0_MASK) >> 32; =20 e =3D find_in_supported_entry(0xd, 1); + /* Mark XFD always support for TDX, it will be cleared finally in + * tdx_adjust_cpuid_features() if XFD is unavailable on the hardware + * because in this case the original data has it as 0. + */ + e->eax |=3D CPUID_XSAVE_XFD; e->ecx |=3D (tdx_caps->supported_xfam & CPUID_XSTATE_XSS_MASK); e->edx |=3D (tdx_caps->supported_xfam & CPUID_XSTATE_XSS_MASK) >> 32; } --=20 2.34.1