From patchwork Sun Oct 30 06:23:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 13024977 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 177B7FA3742 for ; Sun, 30 Oct 2022 06:32:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230418AbiJ3Gcv (ORCPT ); Sun, 30 Oct 2022 02:32:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231318AbiJ3Gb5 (ORCPT ); Sun, 30 Oct 2022 02:31:57 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB92BBA4; Sat, 29 Oct 2022 23:25:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667111102; x=1698647102; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EWRhmPnmbBo5KrcXEgUQVLRg+/G51NCswzjBOF3vJSw=; b=GpsXxkqwZpIpWWwwbctVN92j9qoUrslSdQMWVGUPUH12b5N1WQkpzwTE K09dDw27R6+Tjh3g9ytxDODJxPCQpGOAFXSQTWUswlR2RcgUpLk1SJkDS tDvNys9nV7z42d6/ogVA2aQFT6Ul1D4kMxP+TK74b2tSk4GqlqKn3B1Ei bZmrjDRxWW4fWVFcwJhoQgducAYUXDoixzUKctxx6EervJtt69ynGGR86 M3ZbWWN9/QmmhGwp5+h6cGQjnWpSLhPir+uoTarPrT0Wmdx3cX/ygXZrL xwtDNC041FnHMYJF6V6JGWu1XpYpt7eB0Fv7XYzxQ+apNCuvEazh3uR2t A==; X-IronPort-AV: E=McAfee;i="6500,9779,10515"; a="395037212" X-IronPort-AV: E=Sophos;i="5.95,225,1661842800"; d="scan'208";a="395037212" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2022 23:24:13 -0700 X-IronPort-AV: E=McAfee;i="6500,9779,10515"; a="878393143" X-IronPort-AV: E=Sophos;i="5.95,225,1661842800"; d="scan'208";a="878393143" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2022 23:24:13 -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 Subject: [PATCH v10 094/108] KVM: TDX: Handle TDX PV CPUID hypercall Date: Sat, 29 Oct 2022 23:23:35 -0700 Message-Id: <450f6c2c56c08e0676fd0559876e8413502209ae.1667110240.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 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 f6477d577001..4b83d7a81433 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -810,12 +810,34 @@ static int tdx_emulate_vmcall(struct kvm_vcpu *vcpu) return 1; } +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; }