From patchwork Thu May 12 03:17:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 12846933 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 D270CC433EF for ; Thu, 12 May 2022 03:21:31 +0000 (UTC) Received: from localhost ([::1]:48690 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nozOM-00050z-RK for qemu-devel@archiver.kernel.org; Wed, 11 May 2022 23:21:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38964) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nozLm-00028w-QB for qemu-devel@nongnu.org; Wed, 11 May 2022 23:18:50 -0400 Received: from mga06b.intel.com ([134.134.136.31]:1444 helo=mga06.intel.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nozLl-0002pk-29 for qemu-devel@nongnu.org; Wed, 11 May 2022 23:18:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1652325529; x=1683861529; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7wQ13U6mhm6FzsR696KKQMjtpN9FKpguy5059TWmEVg=; b=Qgi/6xZTfgxPVt3X28otAxSDisAzPP2/0LqXHOD1j9LIqyXb/KeSfnTK zkeBsQXf2BVyPiWZG7jFAYjq3IVfC/Hjs/54clSZ5QoKY2QHPsr0jIquW HuaIP4Z/ZbZDS4xWNFmGxyDPbbFdffRX8ZCCDlE8PceAW2H5Dh/MMxe4h xFbm6HSKB77aFLmmMBbZRLr9VLNdu13AP6wihwC34jUF3P6MNG9vRa7wr c8P3o1DjzQe8MmUsOCATxiwcHzxVr075DX7AgUPcTsotaCagweTcAWfEX ytfJMsvJZ1580ywp1hT2S4gpvoQQ4GcIQpux9NUGMZoZsVmvNQz5E4SnH Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10344"; a="330478973" X-IronPort-AV: E=Sophos;i="5.91,218,1647327600"; d="scan'208";a="330478973" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2022 20:18:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,218,1647327600"; d="scan'208";a="594455533" Received: from lxy-dell.sh.intel.com ([10.239.159.55]) by orsmga008.jf.intel.com with ESMTP; 11 May 2022 20:18:37 -0700 From: Xiaoyao Li To: Paolo Bonzini , Isaku Yamahata , isaku.yamahata@intel.com, Gerd Hoffmann , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , =?utf-8?q?Phi?= =?utf-8?q?lippe_Mathieu-Daud=C3=A9?= , Richard Henderson , "Michael S . Tsirkin" , Marcel Apfelbaum , Cornelia Huck , Marcelo Tosatti , Laszlo Ersek , Eric Blake Cc: Connor Kuehl , erdemaktas@google.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, seanjc@google.com, xiaoyao.li@intel.com Subject: [RFC PATCH v4 07/36] i386/tdx: Introduce is_tdx_vm() helper and cache tdx_guest object Date: Thu, 12 May 2022 11:17:34 +0800 Message-Id: <20220512031803.3315890-8-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220512031803.3315890-1-xiaoyao.li@intel.com> References: <20220512031803.3315890-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=134.134.136.31; envelope-from=xiaoyao.li@intel.com; helo=mga06.intel.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.998, HK_RANDOM_FROM=0.998, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" It will need special handling for TDX VMs all around the QEMU. Introduce is_tdx_vm() helper to query if it's a TDX VM. Cache tdx_guest object thus no need to cast from ms->cgs every time. Signed-off-by: Xiaoyao Li --- target/i386/kvm/tdx.c | 13 +++++++++++++ target/i386/kvm/tdx.h | 10 ++++++++++ 2 files changed, 23 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 68bedbad0ebe..803154efdb91 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -19,6 +19,14 @@ #include "hw/i386/x86.h" #include "tdx.h" +static TdxGuest *tdx_guest; + +/* It's valid after kvm_confidential_guest_init()->kvm_tdx_init() */ +bool is_tdx_vm(void) +{ + return !!tdx_guest; +} + enum tdx_ioctl_level{ TDX_PLATFORM_IOCTL, TDX_VM_IOCTL, @@ -101,10 +109,15 @@ static void get_tdx_capabilities(void) int tdx_kvm_init(MachineState *ms, Error **errp) { + TdxGuest *tdx = (TdxGuest *)object_dynamic_cast(OBJECT(ms->cgs), + TYPE_TDX_GUEST); + if (!tdx_caps) { get_tdx_capabilities(); } + tdx_guest = tdx; + return 0; } diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index c8a23d95258d..4036ca2f3f99 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -1,6 +1,10 @@ #ifndef QEMU_I386_TDX_H #define QEMU_I386_TDX_H +#ifndef CONFIG_USER_ONLY +#include CONFIG_DEVICES /* CONFIG_TDX */ +#endif + #include "exec/confidential-guest-support.h" #define TYPE_TDX_GUEST "tdx-guest" @@ -16,6 +20,12 @@ typedef struct TdxGuest { uint64_t attributes; /* TD attributes */ } TdxGuest; +#ifdef CONFIG_TDX +bool is_tdx_vm(void); +#else +#define is_tdx_vm() 0 +#endif /* CONFIG_TDX */ + int tdx_kvm_init(MachineState *ms, Error **errp); #endif /* QEMU_I386_TDX_H */