Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp4776009pxk; Wed, 30 Sep 2020 11:20:41 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzZ829S0M5IHCYEs62sqNsGPDN9Xr2YxnXV2UDGAWbWmYGjVXdwP+bMX4+UwPMesMdgdyXB X-Received: by 2002:a17:906:c444:: with SMTP id ck4mr619743ejb.398.1601490041684; Wed, 30 Sep 2020 11:20:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1601490041; cv=none; d=google.com; s=arc-20160816; b=NMcrks66jYBBY37shMXtBelmQtrTh4B3cFsK7nu+ue6i7bFEIzM1FM03uPq+l1IXlg 3JND1Zd+7axENe6fOXgmsTUN9I5QA5Db/IJI139tHaMzLazMcP6E09Ycj38AbUzq3GJL nEwK8F2PvVntnz6/GXF8/YWYScvLCHNgKvVedU/a9zP+Sy0tu7Kg6oNm9rrx40akQUHM y+rwJ3pp8x6NaJkmLGgtjKmihZoK/EWWyIwj2n6oBw2yly4QX+MTk/CiIy/Sz6jBVJ2o CV2ElXmtjL88RaT8jKRVEpCJGP1Use/GGG23YLHiCITMFX/A9E8TWptTMj2My1N1IKen uIQQ== 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=uQllDJxcSjMQOLRN8gMeEFy89lYzznrmnE5a5aS+bKw=; b=FZfL25PGyr7dj2JVibnALnP7iMUUBCILlbjVxu7B4A3VYRtphGN3rs/PEpHB5oLcWU o6lvTBerVjonV5cqv5fGaginDdwaUqDO1n5K6IoZaTwZGQF9Vk9utWpgcVj1Mt+XBZeR HIq3iNquXc3qQaHYTxwBEy8wm1VhQ/2WCU8ut5+J66r99xKdXFEsHGmpNA3KEYkQITEW /lyeWRLBN0wJ7SzfZMRloeOlZp1Gf3TffOLl6TWJ8mnEBflx1o/fD2ev4h+51b2XH9oD +SYpJtz8gOIf4t7GZyAbfcPd8nHgFai1TCGh9m5uu1W3qkv9MiFlHKsRHcp8BvZdVolL bhaw== 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 m13si1785408edi.602.2020.09.30.11.20.18; Wed, 30 Sep 2020 11:20:41 -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 S1726603AbgI3STK (ORCPT + 99 others); Wed, 30 Sep 2020 14:19:10 -0400 Received: from mga01.intel.com ([192.55.52.88]:12972 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725355AbgI3STK (ORCPT ); Wed, 30 Sep 2020 14:19:10 -0400 IronPort-SDR: HLlXYE1cZ7Dm/Bvhf/emQbAESWeX8y/6BwpmV03+uZ3P5sZ483xAney/08N9CJcuJxROvVwXX9 LL3iVkdfiNWQ== X-IronPort-AV: E=McAfee;i="6000,8403,9760"; a="180678008" X-IronPort-AV: E=Sophos;i="5.77,322,1596524400"; d="scan'208";a="180678008" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2020 11:19:09 -0700 IronPort-SDR: QqYFsGe5M9XI/hDL7ELxRXKWe8pX0Q3dEBtu3QKVNQb0gNFertXxLmfYVNbYNxzOHSESukUJmN QU/2dRGRUsoA== X-IronPort-AV: E=Sophos;i="5.77,322,1596524400"; d="scan'208";a="457759350" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.160]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2020 11:19:08 -0700 Date: Wed, 30 Sep 2020 11:19:07 -0700 From: Sean Christopherson To: Ben Gardon Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Cannon Matthews , Paolo Bonzini , Peter Xu , Peter Shier , Peter Feiner , Junaid Shahid , Jim Mattson , Yulei Zhang , Wanpeng Li , Vitaly Kuznetsov , Xiao Guangrong Subject: Re: [PATCH 21/22] kvm: mmu: Support MMIO in the TDP MMU Message-ID: <20200930181907.GK32672@linux.intel.com> References: <20200925212302.3979661-1-bgardon@google.com> <20200925212302.3979661-22-bgardon@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200925212302.3979661-22-bgardon@google.com> User-Agent: Mutt/1.5.24 (2015-08-30) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 25, 2020 at 02:23:01PM -0700, Ben Gardon wrote: > In order to support MMIO, KVM must be able to walk the TDP paging Probably worth clarifying that this is for emulated MMIO, as opposed to mapping MMIO host addresses. > structures to find mappings for a given GFN. Support this walk for > the TDP MMU.