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=-6.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 2B2BEC4338F for ; Fri, 23 Jul 2021 05:42:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DC9A560E8B for ; Fri, 23 Jul 2021 05:42:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org DC9A560E8B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aOb/WZelngUh+W5jzQFGS3yAV4vCCSD5QS0yXBQZD2E=; b=DK6VfTGO8BJpZp wFyxkwQZpxHt5T9OKKHm+qjnJXb01BoswTCdrzeEiE7ixdn4o2TjyC4HmYT4lAjZHThtPks79SqHg 7tw38o6fdX2dQo54JR9wZcpZI5kd3y9NiiOcoxERsj/Lv/y/g6/mV/KDBXkhvnpZIMNB1ByhiEfHY A74wdOAuT6mJLQAaIIMe4/FOHtupv7UPZjGWQH+2r4DNbCI82aNU9jVYzrKFPsAKUNxz4iryfQhVP cKKfGJ8vCh6MQn9obmmHIs0vZ2sMSx9SD9WPPpji7HXe5V/b8brJc2FchXou5fSamCB12a7Ctpij5 loFzxJqoVXpX6hcc9tng==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6nvu-003Rwz-DB; Fri, 23 Jul 2021 05:41:14 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6nvq-003RwG-Gf for linux-arm-kernel@lists.infradead.org; Fri, 23 Jul 2021 05:41:11 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id E180A67373; Fri, 23 Jul 2021 07:41:06 +0200 (CEST) Date: Fri, 23 Jul 2021 07:41:06 +0200 From: Christoph Hellwig To: "Tian, Kevin" Cc: Christoph Hellwig , Joerg Roedel , Jason Gunthorpe , Alex Williamson , David Woodhouse , Lu Baolu , Will Deacon , Kirti Wankhede , "linux-arm-kernel@lists.infradead.org" , "iommu@lists.linux-foundation.org" , "kvm@vger.kernel.org" , Robin Murphy Subject: Re: [PATCH 3/6] vfio: remove the unused mdev iommu hook Message-ID: <20210723054106.GA31771@lst.de> References: <20210514133143.GK1096940@ziepe.ca> <20210517123010.GO1096940@ziepe.ca> <20210517133500.GP1096940@ziepe.ca> <20210722133450.GA29155@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210722_224110_744050_194B22C1 X-CRM114-Status: GOOD ( 14.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jul 23, 2021 at 05:36:17AM +0000, Tian, Kevin wrote: > > > And a new set of IOMMU-API: > > > > > > - iommu_{un}bind_pgtable(domain, dev, addr); > > > - iommu_{un}bind_pgtable_pasid(domain, dev, addr, pasid); > > > - iommu_cache_invalidate(domain, dev, invalid_info); > > > > What caches is this supposed to "invalidate"? > > pasid cache, iotlb or dev_iotlb entries that are related to the bound > pgtable. the actual affected cache type and granularity (device-wide, > pasid-wide, selected addr-range) are specified by the caller. Maybe call it pgtable_invalidate or similar? To avoid confusing it with the CPUs dcache. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel