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 004A1C169C4 for ; Thu, 31 Jan 2019 20:28:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6D6D21939 for ; Thu, 31 Jan 2019 20:28:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.de header.i=@amazon.de header.b="QeVhQt/Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728902AbfAaU2B (ORCPT ); Thu, 31 Jan 2019 15:28:01 -0500 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:24204 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728182AbfAaU1F (ORCPT ); Thu, 31 Jan 2019 15:27:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.de; i=@amazon.de; q=dns/txt; s=amazon201209; t=1548966424; x=1580502424; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=9sgF47MrbxyAsS7U5ZelyCSmc8JbJdu5SVylQaC5hcI=; b=QeVhQt/Q+ergf8evqtjBMulqQHZ1j1pVo6G/DGwGrTQNlWdiL1VUkmku QmM2groth0WfoHqhVAB/OoX9+23oIlVEO+jmSWGoeYe8g8LbiYLs8onxr yjNuDoAYnPYbqZrTEXJ+bURQ8AGGonoeCHxh6GabnHGCJUYTRjeiCffwf Q=; X-IronPort-AV: E=Sophos;i="5.56,545,1539648000"; d="scan'208";a="656822797" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-2a-8549039f.us-west-2.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 31 Jan 2019 20:27:01 +0000 Received: from u54e1ad5160425a4b64ea.ant.amazon.com (pdx2-ws-svc-lb17-vlan3.amazon.com [10.247.140.70]) by email-inbound-relay-2a-8549039f.us-west-2.amazon.com (Postfix) with ESMTPS id DE4B8A2185; Thu, 31 Jan 2019 20:27:00 +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 x0VKQwAW028967; Thu, 31 Jan 2019 21:26:58 +0100 Received: (from karahmed@localhost) by u54e1ad5160425a4b64ea.ant.amazon.com (8.15.2/8.15.2/Submit) id x0VKQv24028963; Thu, 31 Jan 2019 21:26:57 +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 06/14] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap Date: Thu, 31 Jan 2019 21:24:36 +0100 Message-Id: <1548966284-28642-7-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 when mapping the L1 MSR bitmap 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 --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx/nested.c | 11 +++++------ arch/x86/kvm/vmx/vmx.h | 3 +++ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 8fc327f..1813211 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -507,9 +507,10 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) { int msr; - struct page *page; unsigned long *msr_bitmap_l1; unsigned long *msr_bitmap_l0 = to_vmx(vcpu)->nested.vmcs02.msr_bitmap; + struct kvm_host_map *map = &to_vmx(vcpu)->nested.msr_bitmap_map; + /* * pred_cmd & spec_ctrl are trying to verify two things: * @@ -535,11 +536,10 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, !pred_cmd && !spec_ctrl) return false; - page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->msr_bitmap); - if (is_error_page(page)) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcs12->msr_bitmap), map)) return false; - msr_bitmap_l1 = (unsigned long *)kmap(page); + msr_bitmap_l1 = (unsigned long *)map->hva; if (nested_cpu_has_apic_reg_virt(vmcs12)) { /* * L0 need not intercept reads for MSRs between 0x800 and 0x8ff, it @@ -587,8 +587,7 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, MSR_IA32_PRED_CMD, MSR_TYPE_W); - kunmap(page); - kvm_release_page_clean(page); + kvm_vcpu_unmap(vcpu, &to_vmx(vcpu)->nested.msr_bitmap_map, false); return true; } diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 9932895..6fb69d8 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -144,6 +144,9 @@ struct nested_vmx { struct page *apic_access_page; struct page *virtual_apic_page; struct page *pi_desc_page; + + struct kvm_host_map msr_bitmap_map; + struct pi_desc *pi_desc; bool pi_pending; u16 posted_intr_nv; -- 2.7.4