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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 715B9C169C4 for ; Thu, 31 Jan 2019 20:27:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B5D721939 for ; Thu, 31 Jan 2019 20:27:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.de header.i=@amazon.de header.b="LrbIgBi7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728529AbfAaU1O (ORCPT ); Thu, 31 Jan 2019 15:27:14 -0500 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:4315 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728191AbfAaU1L (ORCPT ); Thu, 31 Jan 2019 15:27:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.de; i=@amazon.de; q=dns/txt; s=amazon201209; t=1548966430; x=1580502430; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=4i3LOAT8bW3OPM1hrquX4BTCGnfV2n1KS9LBtSPYG50=; b=LrbIgBi7ZqOV7eSwPCavFVcV+FeShgph82hSvrnj/VxhLDDTJaX0sLcX asi9h8Kv9Ty28eCj1awPWaLBn92mLsXfICTltkSyi+aKOnLatyqo+Itvc YTM0AhxDVNHDIW314vtIm9DeB6VNwaLsv5NqspsSG6bTjqw7b5a7qOfte I=; X-IronPort-AV: E=Sophos;i="5.56,545,1539648000"; d="scan'208";a="656822833" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-2c-1968f9fa.us-west-2.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 31 Jan 2019 20:27:09 +0000 Received: from u54e1ad5160425a4b64ea.ant.amazon.com (pdx2-ws-svc-lb17-vlan2.amazon.com [10.247.140.66]) by email-inbound-relay-2c-1968f9fa.us-west-2.amazon.com (Postfix) with ESMTPS id 06D32A26FF; Thu, 31 Jan 2019 20:27:08 +0000 (UTC) Received: from u54e1ad5160425a4b64ea.ant.amazon.com (localhost [127.0.0.1]) by u54e1ad5160425a4b64ea.ant.amazon.com (8.15.2/8.15.2/Debian-3) with ESMTP id x0VKR6bo029026; Thu, 31 Jan 2019 21:27:06 +0100 Received: (from karahmed@localhost) by u54e1ad5160425a4b64ea.ant.amazon.com (8.15.2/8.15.2/Submit) id x0VKR6l3029025; Thu, 31 Jan 2019 21:27:06 +0100 From: KarimAllah Ahmed To: x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Paolo Bonzini Cc: KarimAllah Ahmed Subject: [PATCH v6 12/14] KVM/nVMX: Use kvm_vcpu_map for accessing the enlightened VMCS Date: Thu, 31 Jan 2019 21:24:42 +0100 Message-Id: <1548966284-28642-13-git-send-email-karahmed@amazon.de> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548966284-28642-1-git-send-email-karahmed@amazon.de> References: <1548966284-28642-1-git-send-email-karahmed@amazon.de> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use kvm_vcpu_map for accessing the enlightened VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - s/enhanced/enlightened - unmap with dirty flag --- arch/x86/kvm/vmx/nested.c | 14 +++++--------- arch/x86/kvm/vmx/vmx.h | 2 +- 2 files changed, 6 insertions(+), 10 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 3c173b9..60ba582 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -193,10 +193,8 @@ static inline void nested_release_evmcs(struct kvm_vcpu *vcpu) if (!vmx->nested.hv_evmcs) return; - kunmap(vmx->nested.hv_evmcs_page); - kvm_release_page_dirty(vmx->nested.hv_evmcs_page); + kvm_vcpu_unmap(vcpu, &vmx->nested.hv_evmcs_map, true); vmx->nested.hv_evmcs_vmptr = -1ull; - vmx->nested.hv_evmcs_page = NULL; vmx->nested.hv_evmcs = NULL; } @@ -1769,13 +1767,11 @@ static int nested_vmx_handle_enlightened_vmptrld(struct kvm_vcpu *vcpu, nested_release_evmcs(vcpu); - vmx->nested.hv_evmcs_page = kvm_vcpu_gpa_to_page( - vcpu, assist_page.current_nested_vmcs); - - if (unlikely(is_error_page(vmx->nested.hv_evmcs_page))) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(assist_page.current_nested_vmcs), + &vmx->nested.hv_evmcs_map)) return 0; - vmx->nested.hv_evmcs = kmap(vmx->nested.hv_evmcs_page); + vmx->nested.hv_evmcs = vmx->nested.hv_evmcs_map.hva; /* * Currently, KVM only supports eVMCS version 1 @@ -4278,7 +4274,7 @@ static int handle_vmclear(struct kvm_vcpu *vcpu) return nested_vmx_failValid(vcpu, VMXERR_VMCLEAR_VMXON_POINTER); - if (vmx->nested.hv_evmcs_page) { + if (vmx->nested.hv_evmcs_map.hva) { if (vmptr == vmx->nested.hv_evmcs_vmptr) nested_release_evmcs(vcpu); } else { diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index bd04725..a130139 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -172,7 +172,7 @@ struct nested_vmx { } smm; gpa_t hv_evmcs_vmptr; - struct page *hv_evmcs_page; + struct kvm_host_map hv_evmcs_map; struct hv_enlightened_vmcs *hv_evmcs; }; -- 2.7.4