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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A41E2C433F5 for ; Tue, 8 Mar 2022 20:02:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350112AbiCHUDc (ORCPT ); Tue, 8 Mar 2022 15:03:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235269AbiCHUD2 (ORCPT ); Tue, 8 Mar 2022 15:03:28 -0500 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9D756389 for ; Tue, 8 Mar 2022 12:02:30 -0800 (PST) Received: by mail-pl1-x62d.google.com with SMTP id e2so60724pls.10 for ; Tue, 08 Mar 2022 12:02:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=BQc9qf7Jvr1scII8R10TwmoX8GBVxNzjAKC9tzRHQJw=; b=j1Vw88ktDAfHqoj70X1xbgvDOWX76yic7J8vvqFuJQBkx2U/WRnmXK0hVpiQg/+dYI rF7/AEzyVQl76IMfpOGDsmHBTSGBWmLc8TxHeQlHklPZAvEGvskagQ4stLGskbvQGo58 WnFBpPqTerNDJllxf+BI8exCnH7bM6nJJfP4DHgchQj0bxRTf7lM3pXcJXRhC5WvL5WF WX9hXBwlG4Faz/2RK3FuUu2Jp/hHc3BhUm22lk6fUH2s+0t9yiyfUvzaoRykpjJ1joZA 42+A2V10LI5AoYj6wRE/pi2xw25e3HO5tf4Ht4IP4YFLciZguKgzd8b+AasW2WWu8Nkb +pfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=BQc9qf7Jvr1scII8R10TwmoX8GBVxNzjAKC9tzRHQJw=; b=NcF8nos69F+mbWkRAoGBjCVOvPq/jB3fa2XBVMfSQUk14x/NEOVdy6CUQfhtrZyYL4 /0iS1aWtF+ywN78hWF9nMKbKpy8OXAlKyg0XJr/SNXn7Nyb+TOK6Y3hbgKQevNFr8mzF vNJC9eoJrFmuyCOMz4yf8jCNFdl7SJxo8dG/R2+BmNtUd0JD1jt/lU7EOw/uo34G8onO oXJCfXp7hE/hvQfscC0qokJDBAt70pw+fVVkIiR4nxoH4v5lw8H6JN+qqK9C17hlcFLh K+p/u2oonvlMAh1fOdJgwzjhnrajQb5GC96l5+QHMFqVBBxVPP55AYNAFhvHDPpkoqU8 FptA== X-Gm-Message-State: AOAM532ZQEitIs8sK/4hdi0M0wcWKKdcrOSx5E6iREJTn7aQ1IjM0oaJ Oc12TSSoa5zjiVBoFFffjFLWFA== X-Google-Smtp-Source: ABdhPJx0DErx4byKNhlX+0jvcUmeDNga+OsQwZ/c3bjRyuUiARmCZ70+I7Qs5s8pCYg23pJwHMYdlA== X-Received: by 2002:a17:902:714b:b0:151:d8fa:fd98 with SMTP id u11-20020a170902714b00b00151d8fafd98mr16662243plm.146.1646769750140; Tue, 08 Mar 2022 12:02:30 -0800 (PST) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id mp10-20020a17090b190a00b001bf8453aea8sm3562863pjb.42.2022.03.08.12.02.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Mar 2022 12:02:29 -0800 (PST) Date: Tue, 8 Mar 2022 20:02:26 +0000 From: Sean Christopherson To: Paolo Bonzini Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, dmatlack@google.com Subject: Re: [PATCH v2 25/25] KVM: x86/mmu: extract initialization of the page walking data Message-ID: References: <20220221162243.683208-1-pbonzini@redhat.com> <20220221162243.683208-26-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220221162243.683208-26-pbonzini@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 21, 2022, Paolo Bonzini wrote: > +static void kvm_vcpu_init_walker(struct kvm_vcpu *vcpu, > + struct kvm_mmu *mmu, > + union kvm_mmu_paging_mode new_mode) kvm_vcpu_init_walker() is a rather odd and almost maliciously obtuse. We're not short on space for this one, so how about? static void kvm_mmu_init_guest_walker(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, union kvm_mmu_paging_mode new_mode) > void kvm_init_mmu(struct kvm_vcpu *vcpu) > { > struct kvm_mmu_role_regs regs = vcpu_to_role_regs(vcpu); > union kvm_mmu_paging_mode cpu_mode = kvm_calc_cpu_mode(vcpu, ®s); > > + kvm_vcpu_init_walker(vcpu, vcpu->arch.walk_mmu, cpu_mode); > if (mmu_is_nested(vcpu)) > - init_kvm_nested_mmu(vcpu, cpu_mode); > - else if (tdp_enabled) > + return; Nice! I really like that this highlights that the nested_mmu crud is just for the walker. Can you also add a comment here explaining that part? > + > + if (tdp_enabled) > init_kvm_tdp_mmu(vcpu, cpu_mode); > else > init_kvm_softmmu(vcpu, cpu_mode); > -- > 2.31.1 >