From patchwork Fri Apr 23 00:06:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 12219263 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=-21.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL 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 2BB97C433ED for ; Fri, 23 Apr 2021 00:06:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F1F4861155 for ; Fri, 23 Apr 2021 00:06:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236068AbhDWAHR (ORCPT ); Thu, 22 Apr 2021 20:07:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235797AbhDWAHQ (ORCPT ); Thu, 22 Apr 2021 20:07:16 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 271B7C06174A for ; Thu, 22 Apr 2021 17:06:41 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id f7-20020a5b0c070000b02904e9a56ee7e7so22046887ybq.9 for ; Thu, 22 Apr 2021 17:06:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=reply-to:date:message-id:mime-version:subject:from:to:cc; bh=v66Jk+gEpeRgxxkcCt+o/qjQEpMd7xAYrLPcmO2p4cI=; b=VTxsg4h0oDCx7YbTDXvRJwivIso/3i16ryOJZvE2aLPAXwnNlMyYEX/xjLO65QNGnq UAWmt8fAh4j5/dxuDxyFeEP7NHUD2X1W0xTxJFuJ984FLTRQI2v2r29shPH1N66C2uKS b5p0PZPRzxa63ZguF4QbBvsH9mXOk5vpkzcYubnxNVrMUa3a1Anr5nS1yN42Q8rwn62m 1mjb0FxpoDDLkAL1TZXgJzLI++X8PnErigmkdYmXmD7a2wr/egMfDrsllaG+o9jXsU23 uy1sHv2Js6+L0X9k6abwbNoDVvOCaybixGMHokDHKp9M1sy0pbVZDW5iSnSZAV7x7vk3 aB7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:date:message-id:mime-version:subject :from:to:cc; bh=v66Jk+gEpeRgxxkcCt+o/qjQEpMd7xAYrLPcmO2p4cI=; b=QNyUSLk0i6Bj+kQwYR/hvzSDcbQx+hToCbOYpEp82VysEBbTG9ZpCzwDpRoGcoMj76 vR0tJMhwx2IagaHqojt1/sqasSv3F1JG/PuwD/3ocbvYS3fBNWUsFb5e2xdG7uDu6/3F A0s91+5pxh3q2ZtAUTkSKcM/ck9Vbt52DQIHFfaiDa4cErdKl62KkvcrVkdS/d4rzGnN Hr2gL1bOr4NAIQJF8zaPRwA16RCUcLfzNjDFvZ5mwgskfgjuQQXCI4dRtBg+emwQktnF l0APQr/mmhsqtYh+Zxe6fYfkyocuY7Hcim04Tk48bksRjtU9ywcztHdUz9prEhV10QNV BiZg== X-Gm-Message-State: AOAM533AifhSW+Djj4cs4CDYdMRjXfQsE08qq5dHElj+G9LZs42aIp0H IYTlEVKVd4v1gMDNCONoom2pXkmd5NY= X-Google-Smtp-Source: ABdhPJzadxessdpAjDDbX76aXuVMs4n1pAxeTI8YzDEJJFSYiKh/f16bzz2wlJzDr6iw5UeDcHZHJI7BPzg= X-Received: from seanjc798194.pdx.corp.google.com ([2620:15c:f:10:e012:374c:592:6194]) (user=seanjc job=sendgmr) by 2002:a25:680c:: with SMTP id d12mr122727ybc.87.1619136400249; Thu, 22 Apr 2021 17:06:40 -0700 (PDT) Reply-To: Sean Christopherson Date: Thu, 22 Apr 2021 17:06:33 -0700 Message-Id: <20210423000637.3692951-1-seanjc@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.31.1.498.g6c1eba8ee3d-goog Subject: [PATCH 0/4] KVM: x86: Kill off pdptrs_changed() 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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Remove pdptrs_changed(), which is mostly dead anyways, and the few bits that are still thrashing are useless. This conflicts with Maxim's work to migrate PDPTRs out-of-band, but I think it will conflict in a good way as the "skip load_pdptrs()" logic for the out-of-band case won't have to juggle this legacy crud. Sean Christopherson (4): KVM: nVMX: Drop obsolete (and pointless) pdptrs_changed() check KVM: nSVM: Drop pointless pdptrs_changed() check on nested transition KVM: x86: Always load PDPTRs on CR3 load for SVM w/o NPT and a PAE guest KVM: x86: Unexport kvm_read_guest_page_mmu() arch/x86/include/asm/kvm_host.h | 4 ---- arch/x86/kvm/svm/nested.c | 6 ++--- arch/x86/kvm/vmx/nested.c | 8 +++---- arch/x86/kvm/x86.c | 41 ++++----------------------------- 4 files changed, 10 insertions(+), 49 deletions(-)