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 1BEF5CCA483 for ; Tue, 7 Jun 2022 07:45:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237872AbiFGHpO (ORCPT ); Tue, 7 Jun 2022 03:45:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237907AbiFGHo6 (ORCPT ); Tue, 7 Jun 2022 03:44:58 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E8FC32ECC; Tue, 7 Jun 2022 00:44:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1654587897; x=1686123897; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=OSBO16dRCwR6Wb79tDIGbzqHZ301kVBrdpEBr6LRMRc=; b=WhVp5S+1hW900TACvFcx0rLwHKeZbfS2Kvoil6SFq4syxzGNCha5E3Lt lbgEZAvxWkwKC/V/DjAl7ke5XN94VFOnpQAncBJ8PWDepGpgLoRnIrQ+y MZTd2G9PVaoakvHUGvNPRhKek6wm1xf1XiS02s9sFOBAdkmaX8P2K7fmc wS/gQf8pGhDQTO0d40OfeqqXdiPB+pGtJiBAVhyptfwnvDeP6o/IoNLre bSpk0vznExOnGUz7ER2qOTV58qi+HhwS9JcurQz0GK8L/cjwoEOzPq7Tt OE5IR7+A93wJWpDQSbyHNrtV8gqBfz53kRMjdbj9nTrJSlbmmC95b6too w==; X-IronPort-AV: E=McAfee;i="6400,9594,10370"; a="277374445" X-IronPort-AV: E=Sophos;i="5.91,283,1647327600"; d="scan'208";a="277374445" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2022 00:44:55 -0700 X-IronPort-AV: E=Sophos;i="5.91,283,1647327600"; d="scan'208";a="584086830" Received: from zwang64-mobl1.ccr.corp.intel.com (HELO [10.249.174.202]) ([10.249.174.202]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2022 00:44:45 -0700 Message-ID: Date: Tue, 7 Jun 2022 15:44:43 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Cc: baolu.lu@linux.intel.com, suravee.suthikulpanit@amd.com, alyssa@rosenzweig.io, alim.akhtar@samsung.com, dwmw2@infradead.org, yong.wu@mediatek.com, mjrosato@linux.ibm.com, gerald.schaefer@linux.ibm.com, thierry.reding@gmail.com, vdumpa@nvidia.com, jonathanh@nvidia.com, cohuck@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org Subject: Re: [PATCH 0/5] Simplify vfio_iommu_type1 attach/detach routine Content-Language: en-US To: Nicolin Chen , jgg@nvidia.com, joro@8bytes.org, will@kernel.org, marcan@marcan.st, sven@svenpeter.dev, robin.murphy@arm.com, robdclark@gmail.com, m.szyprowski@samsung.com, krzysztof.kozlowski@linaro.org, agross@kernel.org, bjorn.andersson@linaro.org, matthias.bgg@gmail.com, heiko@sntech.de, orsonzhai@gmail.com, baolin.wang7@gmail.com, zhang.lyra@gmail.com, wens@csie.org, jernej.skrabec@gmail.com, samuel@sholland.org, jean-philippe@linaro.org, alex.williamson@redhat.com References: <20220606061927.26049-1-nicolinc@nvidia.com> From: Baolu Lu In-Reply-To: <20220606061927.26049-1-nicolinc@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org On 2022/6/6 14:19, Nicolin Chen wrote: > Worths mentioning the exact match for enforce_cache_coherency is removed > with this series, since there's very less value in doing that since KVM > won't be able to take advantage of it -- this just wastes domain memory. > Instead, we rely on Intel IOMMU driver taking care of that internally. After reading this series, I don't see that Intel IOMMU driver needs any further change to support the new scheme. Did I miss anything? Best regards, baolu