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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 68AC7C11D20 for ; Thu, 20 Feb 2020 20:44:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B95A207FD for ; Thu, 20 Feb 2020 20:44:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729295AbgBTUov (ORCPT ); Thu, 20 Feb 2020 15:44:51 -0500 Received: from mga12.intel.com ([192.55.52.136]:13654 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728618AbgBTUn6 (ORCPT ); Thu, 20 Feb 2020 15:43:58 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 12:43:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,465,1574150400"; d="scan'208";a="349237091" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.202]) by fmsmga001.fm.intel.com with ESMTP; 20 Feb 2020 12:43:58 -0800 From: Sean Christopherson To: Paolo Bonzini Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/10] KVM: VMX: Use vpid_sync_context() directly when possible Date: Thu, 20 Feb 2020 12:43:47 -0800 Message-Id: <20200220204356.8837-2-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200220204356.8837-1-sean.j.christopherson@intel.com> References: <20200220204356.8837-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use vpid_sync_context() directly for flows that run if and only if enable_vpid=1, or more specifically, nested VMX flows that are gated by vmx->nested.msrs.secondary_ctls_high.SECONDARY_EXEC_ENABLE_VPID being set, which is allowed if and only if enable_vpid=1. Because these flows call __vmx_flush_tlb() with @invalidate_gpa=false, the if-statement that decides between INVEPT and INVVPID will always go down the INVVPID path, i.e. call vpid_sync_context() because "enable_ept && (invalidate_gpa || !enable_vpid)" always evaluates false. This helps pave the way toward removing @invalidate_gpa and @vpid from __vmx_flush_tlb() and its callers. No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/nested.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 657c2eda357c..19ac4083667f 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -2466,7 +2466,7 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, if (nested_cpu_has_vpid(vmcs12) && nested_has_guest_tlb_tag(vcpu)) { if (vmcs12->virtual_processor_id != vmx->nested.last_vpid) { vmx->nested.last_vpid = vmcs12->virtual_processor_id; - __vmx_flush_tlb(vcpu, nested_get_vpid02(vcpu), false); + vpid_sync_context(nested_get_vpid02(vcpu)); } } else { /* @@ -5154,17 +5154,17 @@ static int handle_invvpid(struct kvm_vcpu *vcpu) __invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR, vpid02, operand.gla); } else - __vmx_flush_tlb(vcpu, vpid02, false); + vpid_sync_context(vpid02); break; case VMX_VPID_EXTENT_SINGLE_CONTEXT: case VMX_VPID_EXTENT_SINGLE_NON_GLOBAL: if (!operand.vpid) return nested_vmx_failValid(vcpu, VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID); - __vmx_flush_tlb(vcpu, vpid02, false); + vpid_sync_context(vpid02); break; case VMX_VPID_EXTENT_ALL_CONTEXT: - __vmx_flush_tlb(vcpu, vpid02, false); + vpid_sync_context(vpid02); break; default: WARN_ON_ONCE(1); -- 2.24.1