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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C00DC6FA99 for ; Sun, 12 Mar 2023 17:58:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230326AbjCLR57 (ORCPT ); Sun, 12 Mar 2023 13:57:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230130AbjCLR5w (ORCPT ); Sun, 12 Mar 2023 13:57:52 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6EB43B23D; Sun, 12 Mar 2023 10:57:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1678643871; x=1710179871; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fHYFsmBYMZWWGVo5gVSDOb5YGEEu1qWAzdz4NCNlF9s=; b=BpXn/RS/eLE/XHBgUaD+B7qb2D254N3COVbT54GxabCoSq/EUgYlgV+n U/vSyZSHgS5XUUJBdX54sR98mHbRPZ3nSgCZjBBx7DKy7tVnZ3ynKtlpZ YTcOH8B8BTd8HcgfK6elmoffjGuiePDnvo9A4mFfay3rWDB3DW5915ecl Ox/YZYBxjf/HyK2vnkVQRmCNx7voYQW59Klnue02g8D6wZG6l3vzDTZwX C2hk4UNnHjvJ3Bj2DLUzRHZlhdhZMW3WA5FdqMb/swrjRYuhmuPDjwOVg mgm+/mT3JGaG6lEBdniAPtN13PIksJfT0nmgeAUwY4e774an+bsLkEcP9 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10647"; a="320863553" X-IronPort-AV: E=Sophos;i="5.98,254,1673942400"; d="scan'208";a="320863553" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2023 10:57:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10647"; a="628396909" X-IronPort-AV: E=Sophos;i="5.98,254,1673942400"; d="scan'208";a="628396909" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2023 10:57:48 -0700 From: isaku.yamahata@intel.com To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini , erdemaktas@google.com, Sean Christopherson , Sagi Shahar , David Matlack , Kai Huang , Zhi Wang Subject: [PATCH v13 004/113] KVM: TDX: Initialize logical processor when onlined Date: Sun, 12 Mar 2023 10:55:28 -0700 Message-Id: <82616f9c8a4fadeae48eea42c31aed270f3c25c4.1678643052.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Isaku Yamahata TDX requires to call a TDX initialization function per logical processor (LP) before the LP uses TDX. When CPU is onlined, call the TDX LP initialization API when cpu is onlined. If it failed refuse onlininig of the cpu for simplicity instead of TDX avoiding the LP. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/main.c | 15 ++++++++++++++- arch/x86/kvm/vmx/tdx.c | 5 +++++ arch/x86/kvm/vmx/x86_ops.h | 2 ++ 3 files changed, 21 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c index 5c9f5e00b3c4..d1c9c7f55050 100644 --- a/arch/x86/kvm/vmx/main.c +++ b/arch/x86/kvm/vmx/main.c @@ -9,6 +9,19 @@ static bool enable_tdx __ro_after_init; module_param_named(tdx, enable_tdx, bool, 0444); +static int vt_hardware_enable(void) +{ + int ret; + + ret = vmx_hardware_enable(); + if (!ret && enable_tdx) { + ret = tdx_hardware_enable(); + if (ret) + vmx_hardware_disable(); + } + return ret; +} + static __init int vt_hardware_setup(void) { int ret; @@ -40,7 +53,7 @@ struct kvm_x86_ops vt_x86_ops __initdata = { .hardware_unsetup = vmx_hardware_unsetup, - .hardware_enable = vmx_hardware_enable, + .hardware_enable = vt_hardware_enable, .hardware_disable = vmx_hardware_disable, .has_emulated_msr = vmx_has_emulated_msr, diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index f3eb0138b60b..e51314bbb439 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -10,6 +10,11 @@ #undef pr_fmt #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +int tdx_hardware_enable(void) +{ + return tdx_cpu_enable(); +} + static int __init tdx_module_setup(void) { int ret; diff --git a/arch/x86/kvm/vmx/x86_ops.h b/arch/x86/kvm/vmx/x86_ops.h index 0f200aead411..010d02c86ba4 100644 --- a/arch/x86/kvm/vmx/x86_ops.h +++ b/arch/x86/kvm/vmx/x86_ops.h @@ -139,8 +139,10 @@ void vmx_setup_mce(struct kvm_vcpu *vcpu); #ifdef CONFIG_INTEL_TDX_HOST int __init tdx_hardware_setup(struct kvm_x86_ops *x86_ops); +int tdx_hardware_enable(void); #else static inline int tdx_hardware_setup(struct kvm_x86_ops *x86_ops) { return -ENOSYS; } +static inline int tdx_hardware_enable(void) { return -EOPNOTSUPP; } #endif #endif /* __KVM_X86_VMX_X86_OPS_H */ -- 2.25.1