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 C3B52C7EE29 for ; Mon, 29 May 2023 04:29:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232213AbjE2E3P (ORCPT ); Mon, 29 May 2023 00:29:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231997AbjE2E2f (ORCPT ); Mon, 29 May 2023 00:28:35 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C24A1724; Sun, 28 May 2023 21:25:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1685334304; x=1716870304; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=dkM2NGAdXr2t1MH9WQEH3qLXB85G3jvr/QQII68rcDE=; b=apz6ArlcXCjwvaFmll3AVmXDgkSUcvulCSP/7oLcF9lYwQngQljn5MWY abL0zGRNTphu9Zu5VMDvf5KJr+DvK+mK1QZi51bo6a1I4sC28/8Jjf1T3 u1W7IbRqjcHyj1IiU1ZWJpz5gSn05DBpTJVgzd73IPsCN3y6wYTCG72X+ JS8AdTTRYB1ipbIGpPc5MtIAaSioXzXM+Etw1AGVY/8UFNczmhje5xRDA IPnhyL6DAnlBm+zgVIyDz957tUtKF+bk2MADC5QS5+ST2nlS4l5sz+kkj y2jq4DwiGyBtnwKUXolqsv6eweKDBpj/0VUlPjdtYIqQL5LqpXvsufnHE Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10724"; a="356993418" X-IronPort-AV: E=Sophos;i="6.00,200,1681196400"; d="scan'208";a="356993418" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2023 21:21:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10724"; a="830223427" X-IronPort-AV: E=Sophos;i="6.00,200,1681196400"; d="scan'208";a="830223427" Received: from ls.sc.intel.com (HELO localhost) ([172.25.112.31]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2023 21:21:39 -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 , chen.bo@intel.com Subject: [PATCH v14 091/113] KVM: TDX: Handle TDX PV CPUID hypercall Date: Sun, 28 May 2023 21:20:13 -0700 Message-Id: <633232a0a3a0beb140744207ba1f6a7f29e2b29d.1685333728.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: kvm@vger.kernel.org From: Isaku Yamahata Wire up TDX PV CPUID hypercall to the KVM backend function. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/tdx.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index d53e263794b4..f8ff12e462f5 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -982,12 +982,34 @@ static int tdx_vp_vmcall_to_user(struct kvm_vcpu *vcpu) return 0; } +static int tdx_emulate_cpuid(struct kvm_vcpu *vcpu) +{ + u32 eax, ebx, ecx, edx; + + /* EAX and ECX for cpuid is stored in R12 and R13. */ + eax = tdvmcall_a0_read(vcpu); + ecx = tdvmcall_a1_read(vcpu); + + kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx, false); + + tdvmcall_a0_write(vcpu, eax); + tdvmcall_a1_write(vcpu, ebx); + tdvmcall_a2_write(vcpu, ecx); + tdvmcall_a3_write(vcpu, edx); + + tdvmcall_set_return_code(vcpu, TDG_VP_VMCALL_SUCCESS); + + return 1; +} + static int handle_tdvmcall(struct kvm_vcpu *vcpu) { if (tdvmcall_exit_type(vcpu)) return tdx_emulate_vmcall(vcpu); switch (tdvmcall_leaf(vcpu)) { + case EXIT_REASON_CPUID: + return tdx_emulate_cpuid(vcpu); default: break; } -- 2.25.1