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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 6277DC47257 for ; Wed, 6 May 2020 23:58:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4BD582075E for ; Wed, 6 May 2020 23:58:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728769AbgEFX6y (ORCPT ); Wed, 6 May 2020 19:58:54 -0400 Received: from mga06.intel.com ([134.134.136.31]:27430 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728379AbgEFX6w (ORCPT ); Wed, 6 May 2020 19:58:52 -0400 IronPort-SDR: GhQ3/yPORJAfzUsvuUi0R4xbH4/167TrP0iWAtknrvykMlAQqCQ14DG+I4aR94LTQakEg/WAOf ghBqplo0rmbA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2020 16:58:51 -0700 IronPort-SDR: r3TEfEBlGCQDnppSb0/B3ZOpwYIpUseXQsClVHbOqACJtHmEpNtf+cELG+aLZ8rdm9Hm3rYnpm Q4VUnL8pFlAA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,361,1583222400"; d="scan'208";a="435086063" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.152]) by orsmga005.jf.intel.com with ESMTP; 06 May 2020 16:58:51 -0700 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 0/2] KVM: nVMX: Skip IPBP on nested VMCS switch Date: Wed, 6 May 2020 16:58:48 -0700 Message-Id: <20200506235850.22600-1-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.26.0 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 Or as Jim would say, "Really skip IPBP on nested VMCS switch" :-D Patch 1 is the delta between kvm/queue and v3 of the original patch[*], i.e. I just cherry-picked v3 and fixed the conflicts. Patch 2 applies the "no IPBP" logic to copy_vmcs02_to_vmcs12_rare(). Feel free to sqaush both of these to commit 7407a52f23732 ("KVM: nVMX: Skip IBPB when switching between vmcs01 and vmcs02") if you so desire. [*] https://lkml.kernel.org/r/20200505044644.16563-1-sean.j.christopherson@intel.com Sean Christopherson (2): KVM: nVMX: Refactor IBPB handling on VMCS switch to genericize code KVM: nVMX: Skip IPBP when switching between vmcs01 and vmcs02, redux arch/x86/kvm/vmx/nested.c | 13 +++---------- arch/x86/kvm/vmx/vmx.c | 19 ++++++++++++++----- arch/x86/kvm/vmx/vmx.h | 4 ++-- 3 files changed, 19 insertions(+), 17 deletions(-) -- 2.26.0