Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp373219pxk; Thu, 24 Sep 2020 07:40:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxy+MXUeuKnRU4oa0tW/KB2oAqrjHj//QNTGm2UqMcK31u+OB/9rfzOGsftk/I7UlDAu7WL X-Received: by 2002:a05:6402:1819:: with SMTP id g25mr222770edy.292.1600958446941; Thu, 24 Sep 2020 07:40:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600958446; cv=none; d=google.com; s=arc-20160816; b=qEU1Q6/uoGtMCaIqzpNVso/gxpHpEI1eCtI9WCks9Cn9f5wcSyUHzgcHpZScGmJIZ7 k9tChrTqCbT8liSRmqr9a2v7td4+HsJzqpfYSgFOFVp7D1tBYsiknjwDBEwIaWmatX39 ZqY9dAaFsymisAmbd3lC0KQ8OcvLEh2o4lKdImHDbA3BUc9/J8tFOBeEclQN8TM7KcbG n+RsewBaqknVkH05zrprzwy3pnePzE3Z/If3tbf3C2DYquCSov26pyc/qjeHoSlmVJRi gj/2bL9jpL/K1xk9cI3k1JcO5z3SqlQVdHZf1Evglv8VhrNhVxw/ESz5Im30ikNmOirn RxYA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :ironport-sdr:ironport-sdr; bh=HXkFOR4NsJ50/U7vQppgzSWVnJxRUQDVLp3SDpaoD/M=; b=hvlee3KQo88rgVaG80tyCcKlFFGD9Lv3rUqBrTkTkT/G9RUK2Yries/9+iCeSO84lB kAlWVQS/s+aUxlBwoWGnbM/rrAS7S1n/pqKhSzLCiWeriHM+me0spy8oac3uw8wb10xv Dmw82xhlN0v67a9WbLYKH+LgIa7IgnUunAGQ9VitHasmyfvzHcCu3fM8ZUJWPP+/J2dp AD1ohzPZfVp1eo6ioY459sftA3bwpF73kSquqm6IE3Tcsr7T9ia6OEqaFWSzfDu1W5Xq oHoNnCbjheJG6ivgJ2UEzlWhadF5K0mfpG5xXj1epg7cC06PUM0IVmYEwpY7Soyh89AE Y/jg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id v26si2143025edd.443.2020.09.24.07.40.23; Thu, 24 Sep 2020 07:40:46 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728237AbgIXOj0 (ORCPT + 99 others); Thu, 24 Sep 2020 10:39:26 -0400 Received: from mga07.intel.com ([134.134.136.100]:52514 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727859AbgIXOj0 (ORCPT ); Thu, 24 Sep 2020 10:39:26 -0400 IronPort-SDR: lYxwhl60KN6YQKEWJLRVb4subtGPKhodt6KGimpn+y0dX4ffBEBxA893xy6y55t3TniFGn9fJI uJggyDxNaLZw== X-IronPort-AV: E=McAfee;i="6000,8403,9753"; a="225363025" X-IronPort-AV: E=Sophos;i="5.77,298,1596524400"; d="scan'208";a="225363025" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2020 07:39:25 -0700 IronPort-SDR: aw/mqSt0VD6UBmHQwsU0wYx6f6DwfujzsoTj23//ldTuw5Nx0Xxgh9c4y3m5b78/1u0mHirB4M Sm0/LN52yJcQ== X-IronPort-AV: E=Sophos;i="5.77,298,1596524400"; d="scan'208";a="486924110" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.160]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2020 07:39:25 -0700 Date: Thu, 24 Sep 2020 07:39:24 -0700 From: Sean Christopherson To: Vitaly Kuznetsov Cc: Paolo Bonzini , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] KVM: x86/mmu: Stash 'kvm' in a local variable in kvm_mmu_free_roots() Message-ID: <20200924143922.GA22539@linux.intel.com> References: <20200923191204.8410-1-sean.j.christopherson@intel.com> <875z83e47o.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <875z83e47o.fsf@vitty.brq.redhat.com> User-Agent: Mutt/1.5.24 (2015-08-30) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 24, 2020 at 02:42:19PM +0200, Vitaly Kuznetsov wrote: > What about kvm_mmu_get_page(), make_mmu_pages_available(), > mmu_alloc_root(), kvm_mmu_sync_roots(), direct_page_fault(), > kvm_mmu_pte_write() which seem to be using the same ugly pattern? :-) Heh, good question. I guess only kvm_mmu_free_roots() managed to cross over the threshold from "that's ugly" to "this is ridiculous".