From patchwork Thu Feb 29 06:36:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13576587 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 76865C48BF6 for ; Thu, 29 Feb 2024 06:41:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rfa5C-0004H7-6C; Thu, 29 Feb 2024 01:40:04 -0500 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 1rfa4u-0003qb-2R for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:39:39 -0500 Received: from mgamail.intel.com ([192.198.163.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfa4r-0004LA-OD for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:39:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709188773; x=1740724773; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xcjX8S6Or4RgbxyPFn2A1+rsnCrOWOXt1edq7jIgm+g=; b=hm9QYH5jCRiO3e2222PBL3ZUdsAtdMSXzuoMqOWwKgeCv/FHDvoi4ikg k0GpMw5H/N6TR+ZhH3nazE0ERCTiGACYEjiSFtbNOrZ8hQ+gXV6YEx5SW 2psrk59rTnYMqJJiy21tdKOKAb3iZ4qcBNFHKFSh4VmpcrZC5QSBPIL4f 6XQN2RWZJMIkdlSY/uSyb+usMPDKxkh/sLLiZvN2ldEpcmeR2lY1sLKc/ xtR0R8ZOFD2LkEK6UeyeE8f2dGenMazCE2zh9KDhN4vbytLgQVhfdWA// 8zL/SO59CMwNW3mGo7j+Bd2wyNjgQPJ9Dx0vnKG3nuqU3v3z5QYmJ82NR A==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="3802650" X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="3802650" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 22:39:32 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="8075212" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa007.jf.intel.com with ESMTP; 28 Feb 2024 22:39:26 -0800 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?= =?utf-8?q?aud=C3=A9?= , Yanan Wang , "Michael S. Tsirkin" , Richard Henderson , Ani Sinha , Peter Xu , Cornelia Huck , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, Michael Roth , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang , xiaoyao.li@intel.com Subject: [PATCH v5 18/65] i386/tdx: Make Intel-PT unsupported for TD guest Date: Thu, 29 Feb 2024 01:36:39 -0500 Message-Id: <20240229063726.610065-19-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240229063726.610065-1-xiaoyao.li@intel.com> References: <20240229063726.610065-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.15; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.596, HK_RANDOM_FROM=0.999, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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 Due to the fact that Intel-PT virtualization support has been broken in QEMU since Sapphire Rapids generation[1], below warning is triggered when luanching TD guest: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25] Before Intel-pt is fixed in QEMU, just make Intel-PT unsupported for TD guest, to avoid the confusing warning. [1] https://lore.kernel.org/qemu-devel/20230531084311.3807277-1-xiaoyao.li@intel.com/ Signed-off-by: Xiaoyao Li --- Changes in v4: - newly added patch; --- target/i386/kvm/tdx.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 85d96140b450..239170142e4f 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -292,6 +292,11 @@ void tdx_get_supported_cpuid(uint32_t function, uint32_t index, int reg, if (function == 1 && reg == R_ECX && !enable_cpu_pm) { *ret &= ~CPUID_EXT_MONITOR; } + + /* QEMU Intel-pt support is broken, don't advertise Intel-PT */ + if (function == 7 && reg == R_EBX) { + *ret &= ~CPUID_7_0_EBX_INTEL_PT; + } } enum tdx_ioctl_level{