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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 C39C4C83003 for ; Wed, 29 Apr 2020 08:35:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C9A82082E for ; Wed, 29 Apr 2020 08:35:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Q3FxWpoT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726503AbgD2If6 (ORCPT ); Wed, 29 Apr 2020 04:35:58 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:28603 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726345AbgD2If6 (ORCPT ); Wed, 29 Apr 2020 04:35:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588149356; 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: in-reply-to:in-reply-to:references:references; bh=qdJ9Tssfd21+vkaPztq8wUNJY05TZTVous+kbqb7BpY=; b=Q3FxWpoTSnIld4BjN9jytf5XtCtX+xwBN6uLscw7jbiXZvg4+YBGP5HNg3X5cQDzr/PMbZ 5spnBwQ9Hl3rashvX6X4vTbVymSB9mOASav+dm011a7QLaDI3aoPYjoH1IFqOCQoCaNoEV 2lVRMCshmS41YVudIbrUG8qTS7cCVaY= 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-439-Hyw3QahcPUe1rCfNcFmAKw-1; Wed, 29 Apr 2020 04:35:54 -0400 X-MC-Unique: Hyw3QahcPUe1rCfNcFmAKw-1 Received: by mail-wm1-f70.google.com with SMTP id o26so725614wmh.1 for ; Wed, 29 Apr 2020 01:35:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=qdJ9Tssfd21+vkaPztq8wUNJY05TZTVous+kbqb7BpY=; b=XCBodhJb2R+k6CJpBMRDCtwCUA73vJAmuCGUvYTqJcxmoAa6wpODJS2kkm/gVvYndx WHUtS566K1RNVFSF3/rzmyoIL0WPYYLonpbSR5HLr4pClmjv/8B7+raQLl5HgS5zRnlf lKwQEQ6g0dvoykvPOxLeLzOGgv+w/lPq1Tx3YsgCFzwrLU6tmBEphPdsSFnKitLJCrB9 8AUzDZDbACxXynrysG7Cfa4dC2vY7qOFctXh8ikjk+PHGpX0ugGJjhE3QGVD2FYtZHWv uSRlUuIljDWimK6+uXpdiXroxEC6Mr6pJ53mexrLp4Uemy7RtnYHQcXEwhwyU5nBXpMK mLUw== X-Gm-Message-State: AGi0PuZuVUKn4CWvPDayLoiBl3VfTGOUF4MRHoPBYIKp12j1x7do2CJz av4ymWqi0kxMnO3FhW3sbnZBx1OiD6xP89h893guD0EkDIDi/LarL6XSHYlr/SBP/4JkbueSAK0 eBx74aBeQZBSkrxXodgTSF8vt X-Received: by 2002:a1c:7f86:: with SMTP id a128mr1912727wmd.95.1588149353524; Wed, 29 Apr 2020 01:35:53 -0700 (PDT) X-Google-Smtp-Source: APiQypIBRr85ezZitL4y/lv7Xl5LCtDwiiwsjxzrPLzALJ4qDzhFmjEVYJ8D+cpir1X8GMvK6w0BZw== X-Received: by 2002:a1c:7f86:: with SMTP id a128mr1912713wmd.95.1588149353322; Wed, 29 Apr 2020 01:35:53 -0700 (PDT) Received: from vitty.brq.redhat.com (g-server-2.ign.cz. [91.219.240.2]) by smtp.gmail.com with ESMTPSA id a205sm7221889wmh.29.2020.04.29.01.35.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 01:35:52 -0700 (PDT) From: Vitaly Kuznetsov To: Xiaoyao Li , Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] kvm: x86: Cleanup vcpu->arch.guest_xstate_size In-Reply-To: <20200429154312.1411-1-xiaoyao.li@intel.com> References: <20200429154312.1411-1-xiaoyao.li@intel.com> Date: Wed, 29 Apr 2020 10:35:43 +0200 Message-ID: <87368mit9c.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Xiaoyao Li writes: > vcpu->arch.guest_xstate_size lost its only user since commit df1daba7d1cb > ("KVM: x86: support XSAVES usage in the host"), so clean it up. > > Signed-off-by: Xiaoyao Li > --- > arch/x86/include/asm/kvm_host.h | 1 - > arch/x86/kvm/cpuid.c | 8 ++------ > arch/x86/kvm/x86.c | 2 -- > 3 files changed, 2 insertions(+), 9 deletions(-) > > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > index 7cd68d1d0627..34a05ca3c904 100644 > --- a/arch/x86/include/asm/kvm_host.h > +++ b/arch/x86/include/asm/kvm_host.h > @@ -654,7 +654,6 @@ struct kvm_vcpu_arch { > > u64 xcr0; > u64 guest_supported_xcr0; > - u32 guest_xstate_size; > > struct kvm_pio_request pio; > void *pio_data; > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > index 6828be99b908..f3eb4f171d3d 100644 > --- a/arch/x86/kvm/cpuid.c > +++ b/arch/x86/kvm/cpuid.c > @@ -84,15 +84,11 @@ int kvm_update_cpuid(struct kvm_vcpu *vcpu) > kvm_read_cr4_bits(vcpu, X86_CR4_PKE)); > > best = kvm_find_cpuid_entry(vcpu, 0xD, 0); > - if (!best) { > + if (!best) > vcpu->arch.guest_supported_xcr0 = 0; > - vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET; > - } else { > + else > vcpu->arch.guest_supported_xcr0 = > (best->eax | ((u64)best->edx << 32)) & supported_xcr0; > - vcpu->arch.guest_xstate_size = best->ebx = > - xstate_required_size(vcpu->arch.xcr0, false); > - } > > best = kvm_find_cpuid_entry(vcpu, 0xD, 1); > if (best && (cpuid_entry_has(best, X86_FEATURE_XSAVES) || > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 856b6fc2c2ba..7cd51a3acc43 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -9358,8 +9358,6 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) > } > fx_init(vcpu); > > - vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET; > - > vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu); > > vcpu->arch.pat = MSR_IA32_CR_PAT_DEFAULT; Reviewed-by: Vitaly Kuznetsov -- Vitaly