From patchwork Sat Apr 10 15:12:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 419209 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=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 03A39C433ED for ; Sat, 10 Apr 2021 15:12:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B948C61029 for ; Sat, 10 Apr 2021 15:12:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234698AbhDJPMs (ORCPT ); Sat, 10 Apr 2021 11:12:48 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:29576 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234392AbhDJPMs (ORCPT ); Sat, 10 Apr 2021 11:12:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618067553; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=aLP+qJ58JyOHR0t3LnIIqaqKNGbep4094fX8j1+aZ48=; b=C7EKgXA++aGHqq9E6E1W+446DEogLj8ifBah767KnyLokNNPwtOZnZoLnDuu7VDlclPR1u 117jrULC1l5YhBhBieIiaikvwqruqEHu98f0LW7Dzu6SvecZPKI1TGu3ND4y4eQE58W5zJ yMxozEDdgCv8E0rayj3vE41Nuv8rz9w= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-208-EvZmBmH4PA-4nn-rj2UP8w-1; Sat, 10 Apr 2021 11:12:31 -0400 X-MC-Unique: EvZmBmH4PA-4nn-rj2UP8w-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5E94F801814; Sat, 10 Apr 2021 15:12:30 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0CA735D9D3; Sat, 10 Apr 2021 15:12:29 +0000 (UTC) From: Paolo Bonzini To: stable@vger.kernel.org Cc: kvm@vger.kernel.org, sasha@kernel.org Subject: [PATCH 5.10/5.11 0/9] Fix missing TLB flushes in TDP MMU Date: Sat, 10 Apr 2021 11:12:20 -0400 Message-Id: <20210410151229.4062930-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The new MMU for two-dimensional paging had some missing TLB flushes in 5.10 and 5.11. This series backports some generic improvements to simplify the backport in the last four patches. Ben Gardon (5): KVM: x86/mmu: change TDP MMU yield function returns to match cond_resched KVM: x86/mmu: Merge flush and non-flush tdp_mmu_iter_cond_resched KVM: x86/mmu: Rename goal_gfn to next_last_level_gfn KVM: x86/mmu: Ensure forward progress when yielding in TDP MMU iter KVM: x86/mmu: Yield in TDU MMU iter even if no SPTES changed Paolo Bonzini (1): KVM: x86/mmu: preserve pending TLB flush across calls to kvm_tdp_mmu_zap_sp Sean Christopherson (3): KVM: x86/mmu: Ensure TLBs are flushed when yielding during GFN range zap KVM: x86/mmu: Ensure TLBs are flushed for TDP MMU during NX zapping KVM: x86/mmu: Don't allow TDP MMU to yield when recovering NX pages arch/x86/kvm/mmu/mmu.c | 13 ++--- arch/x86/kvm/mmu/tdp_iter.c | 30 +++-------- arch/x86/kvm/mmu/tdp_iter.h | 11 +++-- arch/x86/kvm/mmu/tdp_mmu.c | 99 ++++++++++++++++++++++++------------- arch/x86/kvm/mmu/tdp_mmu.h | 18 ++++++- 5 files changed, 103 insertions(+), 68 deletions(-)