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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 6F51CC3A5A9 for ; Mon, 4 May 2020 13:26:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 497F82075A for ; Mon, 4 May 2020 13:26:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GfGomoAE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728040AbgEDN0G (ORCPT ); Mon, 4 May 2020 09:26:06 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:52229 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727781AbgEDN0F (ORCPT ); Mon, 4 May 2020 09:26:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588598764; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i4pzL4umPonPhC4u7wWwTYbUYUN1KN4vROxppSrw3+E=; b=GfGomoAEzmJai5pcW33Kg6Eui8ItxkGKGLR0phL4rdc4i01HZ+8byUR4Z8n1IGPG3pr8qd Vxl0Br0DLGaTUFB6yXItrgRii1rbnBUEHQMgRiM1hNduWpHa4fcS/PsL0D3DKmAee1qgrT D2wuuTPwi80jo0w+c0nhg0uQcPC2tm4= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-82-1F7IX3bIMz2-ICSq2I8sZw-1; Mon, 04 May 2020 09:26:01 -0400 X-MC-Unique: 1F7IX3bIMz2-ICSq2I8sZw-1 Received: by mail-wm1-f70.google.com with SMTP id q5so4857487wmc.9 for ; Mon, 04 May 2020 06:26:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=i4pzL4umPonPhC4u7wWwTYbUYUN1KN4vROxppSrw3+E=; b=VLnB4ZfxmZn13yskW21vI9pcxZZ9Au40DcyfdCbkU17l13fLGGvLdN1pSRvaq7+d/q FQ98BdGdYQh3P/GLDSJaefa3zuZRUXg587o/RJB7H2hUnxxl94NHU2lJD/nyqnb1ZcRI +91QrD8fw3QfFcXXXCGPp++6QxUmA9fpgT18iOgWRxQ33zr6xI3rRH7irGdlkUXgsdEw 2oDKyEaEtV18LU8Jq2gvM4XzfSTHX1ziMV8Ty335nZssl0A6fPENWiYUBE3/5CWNxApZ cytxTqteii81bcmiAWKqFOuD++DR4tTQkIGR9p/3cd2QrqvRiWtl/TO9FGppRiiOjaFi Cx9A== X-Gm-Message-State: AGi0PuY6sQhgIzNCzX2S1piWgxOw9uBFytYV/TBt/lEZbqqWlxgyO2wA F6OV1jTDMcELlcMFzCAwYoQYvGNjLQSRDf4rEAenssuvfU9VkcXEiAbJH+Oz42UwWoyjOot2xmm cC2YpAgwrDjJRpSAfzNV37fj0 X-Received: by 2002:adf:b246:: with SMTP id y6mr19634359wra.205.1588598759722; Mon, 04 May 2020 06:25:59 -0700 (PDT) X-Google-Smtp-Source: APiQypJDk5TIWUOHalS5JGIMZEe9cIgedoGf1dImAxSG/0eN+CuQo328XZeIltJiaklS1Cr1myn0gg== X-Received: by 2002:adf:b246:: with SMTP id y6mr19634338wra.205.1588598759507; Mon, 04 May 2020 06:25:59 -0700 (PDT) Received: from [192.168.178.58] ([151.20.132.175]) by smtp.gmail.com with ESMTPSA id l16sm18526002wrp.91.2020.05.04.06.25.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 May 2020 06:25:59 -0700 (PDT) Subject: Re: [PATCH 00/10] KVM: x86: Misc anti-retpoline optimizations To: Sean Christopherson Cc: Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200502043234.12481-1-sean.j.christopherson@intel.com> From: Paolo Bonzini Message-ID: <76c2fc30-58e3-4d90-4b66-85b6fb4741b5@redhat.com> Date: Mon, 4 May 2020 15:25:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200502043234.12481-1-sean.j.christopherson@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/05/20 06:32, Sean Christopherson wrote: > A smattering of optimizations geared toward avoiding retpolines, though > IMO most of the patches are worthwhile changes irrespective of retpolines. > I can split this up into separate patches if desired, outside of the > obvious combos there are no dependencies. Most of them are good stuff anyway, I agree. Since I like to believe that static calls _are_ close, I queued these: KVM: x86: Save L1 TSC offset in 'struct kvm_vcpu_arch' KVM: nVMX: Unconditionally validate CR3 during nested transitions KVM: VMX: Add proper cache tracking for CR4 KVM: VMX: Add proper cache tracking for CR0 KVM: VMX: Move nested EPT out of kvm_x86_ops.get_tdp_level() hook KVM: x86/mmu: Capture TDP level when updating CPUID and I don't disagree with the DR6 one though it can be even improved a bit so I'll send a patch myself. Paolo