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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,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 092ABC2B9F4 for ; Tue, 22 Jun 2021 18:05:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA14B61002 for ; Tue, 22 Jun 2021 18:05:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232878AbhFVSHR (ORCPT ); Tue, 22 Jun 2021 14:07:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232587AbhFVSGR (ORCPT ); Tue, 22 Jun 2021 14:06:17 -0400 Received: from mail-qv1-xf49.google.com (mail-qv1-xf49.google.com [IPv6:2607:f8b0:4864:20::f49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A636C08C5D9 for ; Tue, 22 Jun 2021 10:59:53 -0700 (PDT) Received: by mail-qv1-xf49.google.com with SMTP id p12-20020a0cf68c0000b029027a35feac45so584765qvn.19 for ; Tue, 22 Jun 2021 10:59:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=reply-to:date:in-reply-to:message-id:mime-version:references :subject:from:to:cc; bh=rUs+966f+CDP8VHde1NoisS+8ww2aUm1j0f8NYlZtqE=; b=Fl+C43avI6SiI4WTsJKZYi1XdqV8GHBrHMpvS/ibNPFWN1hA2wusCpPlf5pWbQwNDw Psp0XUxCPO55t2Li1b5nvreIrIP93otSJBs8gTJUr+VutLMuOwpKPAtySTDllyGVJT8t FPuoLdcXrBl4HE+I6cMmkY1VAuCMPuLr+VsMwb+VN3TZJKgG+35I0R2VXzCnM+mF+Xqe 6dRRk5DMbiXVc5P3XTcgwYcTKRf62KVxhPyGhVJzGPlqcWvSyZW5Zb76Fw+//rzevQZT JAgk7Jn8YrWX9jDpPWk/HwZoi8XH7dWENAAJ5EI8mLPo1PYVDJkNPc0D3IqrgUNcvOnP uVYw== 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:in-reply-to:message-id :mime-version:references:subject:from:to:cc; bh=rUs+966f+CDP8VHde1NoisS+8ww2aUm1j0f8NYlZtqE=; b=HvVaNOQGs5AmTIo64qJyYiDS9UOQyx7cSorIeeVcTJlbny0LE9ormpGH/2eREOcdez OpjKSEagOAy0uV1n5IhTwY0G2BTIjQkDQCllcA30VrBui5K3Z7jBRHNQ07w/35qERplN AMVEC8Pvsx8sEB5wvZ3/wC4QQcEKHrUV1KDujGf57Q3/NkdXFyiZITrNEzKRN0CipdBF GeC5QGsIZqD7LO0UTXXwCKT8panZQ3zC8Z9rvx4FMgEdzKF1SBPZvKaCCr3KsJ8LYyX6 sbiHY1zBUqVPsqBDC+Lg4f0cTjXs6Sh+RVMMea7A4tgOaArE9ItjaJoQlplAK48GonbL NsXg== X-Gm-Message-State: AOAM5315D7z3EWi8ywT/zmaU7FMTMwhdBfFolIa5sK6E2NS9ZjuO0R07 qFbXHdv3Y2EDyz60lPa5PFx/XhQ1oW4= X-Google-Smtp-Source: ABdhPJwg+s3kNjwriwzqMO3mMxkbDvv/AnG8NwcyEcukQUoufCwMdy4XzMqIuM/miw5QWP8OB3hoX3k4BOs= X-Received: from seanjc798194.pdx.corp.google.com ([2620:15c:f:10:5722:92ce:361f:3832]) (user=seanjc job=sendgmr) by 2002:a25:c0d7:: with SMTP id c206mr5187941ybf.369.1624384792699; Tue, 22 Jun 2021 10:59:52 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 22 Jun 2021 10:57:36 -0700 In-Reply-To: <20210622175739.3610207-1-seanjc@google.com> Message-Id: <20210622175739.3610207-52-seanjc@google.com> Mime-Version: 1.0 References: <20210622175739.3610207-1-seanjc@google.com> X-Mailer: git-send-email 2.32.0.288.g62a8d224e6-goog Subject: [PATCH 51/54] KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT 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, Yu Zhang , Maxim Levitsky Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Drop the extra reset of shadow_zero_bits in the nested NPT flow now that shadow_mmu_init_context computes the correct level for nested NPT. No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/kvm/mmu/mmu.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 7849f53fd874..d4969ac98a4b 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4693,12 +4693,6 @@ void kvm_init_shadow_npt_mmu(struct kvm_vcpu *vcpu, unsigned long cr0, __kvm_mmu_new_pgd(vcpu, nested_cr3, new_role.base); shadow_mmu_init_context(vcpu, context, ®s, new_role); - - /* - * Redo the shadow bits, the reset done by shadow_mmu_init_context() - * (above) may use the wrong shadow_root_level. - */ - reset_shadow_zero_bits_mask(vcpu, context); } EXPORT_SYMBOL_GPL(kvm_init_shadow_npt_mmu); -- 2.32.0.288.g62a8d224e6-goog