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=-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=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 6BB31C432BE for ; Thu, 12 Aug 2021 05:07:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 436AF60FC4 for ; Thu, 12 Aug 2021 05:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234170AbhHLFHr (ORCPT ); Thu, 12 Aug 2021 01:07:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234053AbhHLFHq (ORCPT ); Thu, 12 Aug 2021 01:07:46 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 777A9C0613D3 for ; Wed, 11 Aug 2021 22:07:21 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id p71-20020a25424a0000b029056092741626so4966918yba.19 for ; Wed, 11 Aug 2021 22:07:21 -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=MGO3eu+69A+3zEDZ0OIrCDSLNnAJOWz2QBEh8ypXny4=; b=pMXZOmpnvS5i/V0QAPh96XFOGpXLFSzzsZFeGiZdpqM8zjUrBVg3VKjna/Shb588Dd 5eIrJCjEVvhGW9j8lBuEC7SEiG5KX07w3I6rnaiK0ONN4VFoycjhmWcFtZmezYMFUEa1 Nh8zEgBUBucCHVKVFTHWmJuMCAR5LlXJEPkBW8J4P7gFSWHQQpYWTGoKfqU4FkW4zHGP oQzFC5ip8cFLwdROTMLXnF7BjwbBII06aFtWRf0aSFQWz4cvV5FukS4mlKb2mlQ3/L5r tf7NfvuzDuWJ2CqHrgbbFUavMkc9Lg8cheb0Gnq5sEuKCs1MZ52KmsrKOONvgTmG1ljT R7nw== 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=MGO3eu+69A+3zEDZ0OIrCDSLNnAJOWz2QBEh8ypXny4=; b=noHiTDZFiRV9g+SwwiEKffgZA1jAf8ooLrAnTl7zdVeLYAlAGikGplkS6wQAPoIF3N DHgQIOkusNPZ8vOez+tEKm2Z4j9E+Y2dwlCSBxeeAfhqw8vhZQXXzHt6dUSLzx9Fg2+8 T412pLYv1P39dJs+Z1BN17yi3JcIXUtYAHSdpDszLKUOIoe40RiEAUHbv5MZijRFI3qi +EPXIyAl/M14DaOfVo6JK7nWP0s9kCgxMoJHWX+zDeL1k7Vnbe6gMxnT7CzeKaSrKs9+ MbmEgIrx+iJm9kVbIV5LW33UAYyxcAPWGE/RyZ5wMhFxO2/ucF3m+pgo6+auNi1a/65V KWYg== X-Gm-Message-State: AOAM530OhtFArgt0GJDeYq+BkLJXaWioye5BMtgU6L+OK+eLFNGSzd2Q H2ucdXCtx8ncO5TV4XTFJTOWU3F4+po= X-Google-Smtp-Source: ABdhPJy2bpn5nmxNeT8Kxp75pFIA5BDr6AUwfne0xwi3DUsnVFgvyDYUASTjCG2EcJ8IEGyzufyy5pjy588= X-Received: from seanjc798194.pdx.corp.google.com ([2620:15c:90:200:f150:c3bd:5e7f:59bf]) (user=seanjc job=sendgmr) by 2002:a25:918c:: with SMTP id w12mr2048740ybl.226.1628744840665; Wed, 11 Aug 2021 22:07:20 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 11 Aug 2021 22:07:15 -0700 Message-Id: <20210812050717.3176478-1-seanjc@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.33.0.rc1.237.g0d66db33f3-goog Subject: [PATCH 0/2] KVM: x86/mmu: Fix a TDP MMU leak and optimize zap all 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, Ben Gardon Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch 1 fixes a leak of root-1 shadow pages, patch 2 is a minor optimization to the zap all flow that avoids re-reading and re-checking the root-1 SPTEs after they've been zapped by "zap all" flows. Sean Christopherson (2): KVM: x86/mmu: Don't skip non-leaf SPTEs when zapping all SPTEs KVM: x86/mmu: Don't step down in the TDP iterator when zapping all SPTEs arch/x86/kvm/mmu/tdp_mmu.c | 49 +++++++++++++++++++++++++++++--------- 1 file changed, 38 insertions(+), 11 deletions(-) -- 2.33.0.rc1.237.g0d66db33f3-goog