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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 22C3CC433E0 for ; Wed, 27 May 2020 09:01:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6265207E8 for ; Wed, 27 May 2020 09:01:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590570106; bh=Ly0PPgLoVOdP2MHz53CmBLAFstCS5mfpl1WpLZ15gps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=pKTgM8A0Bph0xvGGI1XPq3paib1yuVr7HfDtvCOpcp3IfoO2wPCGdwadEbXQMpQNg LQHNJcxEa7uvWsWrSKgvyjIvU7RJO7+a9qsHvaN2fJC73qUNqmBvLmLlLJzDMLMPtV QtgYAQ2O5KfbjhT9sGcUzt9VVmHQebTTsH/9WPKo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388320AbgE0JBp (ORCPT ); Wed, 27 May 2020 05:01:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:35522 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388213AbgE0JBp (ORCPT ); Wed, 27 May 2020 05:01:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5CC1F20723; Wed, 27 May 2020 09:01:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590570104; bh=Ly0PPgLoVOdP2MHz53CmBLAFstCS5mfpl1WpLZ15gps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=onCoAOhnzHO9z1pUO0//RWYJLmKfFMRTqXoBIY+gdObr+17e6nwXXsvWN0RMThy9e uwLwAnL2f9xW9oLDKOWZn/Nzmaln1ON7ULTIQPpaM1zsoyYnkrxXXpwhUkArhx2hE2 yEEIJrw8f7A1SPpbRQGH1EvlHjbsZMtVrqHdWmVk= Date: Wed, 27 May 2020 11:01:42 +0200 From: Greg Kroah-Hartman To: Zhangfei Gao Cc: Christoph Hellwig , Joerg Roedel , Bjorn Helgaas , Arnd Bergmann , Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , "Rafael J. Wysocki" , Len Brown , jean-philippe , Herbert Xu , kenneth-lee-2012@foxmail.com, Wangzhou , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 1/2] PCI: Introduce PCI_FIXUP_IOMMU Message-ID: <20200527090142.GC179718@kroah.com> References: <1590493749-13823-1-git-send-email-zhangfei.gao@linaro.org> <1590493749-13823-2-git-send-email-zhangfei.gao@linaro.org> <20200526144644.GA20784@infradead.org> <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Tue, May 26, 2020 at 11:09:57PM +0800, Zhangfei Gao wrote: > Hi, Christoph > > On 2020/5/26 下午10:46, Christoph Hellwig wrote: > > On Tue, May 26, 2020 at 07:49:08PM +0800, Zhangfei Gao wrote: > > > Some platform devices appear as PCI but are actually on the AMBA bus, > > > and they need fixup in drivers/pci/quirks.c handling iommu_fwnode. > > > Here introducing PCI_FIXUP_IOMMU, which is called after iommu_fwnode > > > is allocated, instead of reusing PCI_FIXUP_FINAL since it will slow > > > down iommu probing as all devices in fixup final list will be > > > reprocessed. > > Who is going to use this? I don't see a single user in the series. > We will add iommu fixup in drivers/pci/quirks.c, handling > > fwspec->can_stall, which is introduced in > > https://www.spinics.net/lists/linux-pci/msg94559.html > > Unfortunately, the patch does not catch v5.8, so we have to wait. > And we want to check whether this is a right method to solve this issue. We can't take new apis without a real user, so please submit them all at once. thanks, greg k-h 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=-0.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 59265C433E0 for ; Wed, 27 May 2020 09:01:48 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 2D91D207E8 for ; Wed, 27 May 2020 09:01:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="onCoAOhn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D91D207E8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 132F186B12; Wed, 27 May 2020 09:01:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a-yt_2jc5TeC; Wed, 27 May 2020 09:01:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id A18B981BDF; Wed, 27 May 2020 09:01:47 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8D981C0881; Wed, 27 May 2020 09:01:47 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0C618C016F for ; Wed, 27 May 2020 09:01:46 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id ED30C8781C for ; Wed, 27 May 2020 09:01:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Dd0HdwmxyMlw for ; Wed, 27 May 2020 09:01:45 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by hemlock.osuosl.org (Postfix) with ESMTPS id F13538774C for ; Wed, 27 May 2020 09:01:44 +0000 (UTC) Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5CC1F20723; Wed, 27 May 2020 09:01:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590570104; bh=Ly0PPgLoVOdP2MHz53CmBLAFstCS5mfpl1WpLZ15gps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=onCoAOhnzHO9z1pUO0//RWYJLmKfFMRTqXoBIY+gdObr+17e6nwXXsvWN0RMThy9e uwLwAnL2f9xW9oLDKOWZn/Nzmaln1ON7ULTIQPpaM1zsoyYnkrxXXpwhUkArhx2hE2 yEEIJrw8f7A1SPpbRQGH1EvlHjbsZMtVrqHdWmVk= Date: Wed, 27 May 2020 11:01:42 +0200 From: Greg Kroah-Hartman To: Zhangfei Gao Subject: Re: [PATCH 1/2] PCI: Introduce PCI_FIXUP_IOMMU Message-ID: <20200527090142.GC179718@kroah.com> References: <1590493749-13823-1-git-send-email-zhangfei.gao@linaro.org> <1590493749-13823-2-git-send-email-zhangfei.gao@linaro.org> <20200526144644.GA20784@infradead.org> <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> Cc: jean-philippe , Herbert Xu , Arnd Bergmann , linux-pci@vger.kernel.org, Sudeep Holla , "Rafael J. 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Wed, 27 May 2020 09:01:48 +0000 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5CC1F20723; Wed, 27 May 2020 09:01:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590570104; bh=Ly0PPgLoVOdP2MHz53CmBLAFstCS5mfpl1WpLZ15gps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=onCoAOhnzHO9z1pUO0//RWYJLmKfFMRTqXoBIY+gdObr+17e6nwXXsvWN0RMThy9e uwLwAnL2f9xW9oLDKOWZn/Nzmaln1ON7ULTIQPpaM1zsoyYnkrxXXpwhUkArhx2hE2 yEEIJrw8f7A1SPpbRQGH1EvlHjbsZMtVrqHdWmVk= Date: Wed, 27 May 2020 11:01:42 +0200 From: Greg Kroah-Hartman To: Zhangfei Gao Subject: Re: [PATCH 1/2] PCI: Introduce PCI_FIXUP_IOMMU Message-ID: <20200527090142.GC179718@kroah.com> References: <1590493749-13823-1-git-send-email-zhangfei.gao@linaro.org> <1590493749-13823-2-git-send-email-zhangfei.gao@linaro.org> <20200526144644.GA20784@infradead.org> <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <39144dc0-3b04-3127-978b-bd8487dd06e0@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200527_020145_455069_C31D6603 X-CRM114-Status: GOOD ( 14.72 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe , Lorenzo Pieralisi , Herbert Xu , Arnd Bergmann , linux-pci@vger.kernel.org, Joerg Roedel , Sudeep Holla , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Christoph Hellwig , linux-acpi@vger.kernel.org, Wangzhou , linux-crypto@vger.kernel.org, Hanjun Guo , Bjorn Helgaas , kenneth-lee-2012@foxmail.com, linux-arm-kernel@lists.infradead.org, Len Brown Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBNYXkgMjYsIDIwMjAgYXQgMTE6MDk6NTdQTSArMDgwMCwgWmhhbmdmZWkgR2FvIHdy b3RlOgo+IEhpLCBDaHJpc3RvcGgKPiAKPiBPbiAyMDIwLzUvMjYg5LiL5Y2IMTA6NDYsIENocmlz dG9waCBIZWxsd2lnIHdyb3RlOgo+ID4gT24gVHVlLCBNYXkgMjYsIDIwMjAgYXQgMDc6NDk6MDhQ TSArMDgwMCwgWmhhbmdmZWkgR2FvIHdyb3RlOgo+ID4gPiBTb21lIHBsYXRmb3JtIGRldmljZXMg YXBwZWFyIGFzIFBDSSBidXQgYXJlIGFjdHVhbGx5IG9uIHRoZSBBTUJBIGJ1cywKPiA+ID4gYW5k IHRoZXkgbmVlZCBmaXh1cCBpbiBkcml2ZXJzL3BjaS9xdWlya3MuYyBoYW5kbGluZyBpb21tdV9m d25vZGUuCj4gPiA+IEhlcmUgaW50cm9kdWNpbmcgUENJX0ZJWFVQX0lPTU1VLCB3aGljaCBpcyBj YWxsZWQgYWZ0ZXIgaW9tbXVfZndub2RlCj4gPiA+IGlzIGFsbG9jYXRlZCwgaW5zdGVhZCBvZiBy ZXVzaW5nIFBDSV9GSVhVUF9GSU5BTCBzaW5jZSBpdCB3aWxsIHNsb3cKPiA+ID4gZG93biBpb21t dSBwcm9iaW5nIGFzIGFsbCBkZXZpY2VzIGluIGZpeHVwIGZpbmFsIGxpc3Qgd2lsbCBiZQo+ID4g PiByZXByb2Nlc3NlZC4KPiA+IFdobyBpcyBnb2luZyB0byB1c2UgdGhpcz8gIEkgZG9uJ3Qgc2Vl IGEgc2luZ2xlIHVzZXIgaW4gdGhlIHNlcmllcy4KPiBXZSB3aWxsIGFkZCBpb21tdSBmaXh1cCBp biBkcml2ZXJzL3BjaS9xdWlya3MuYywgaGFuZGxpbmcKPiAKPiBmd3NwZWMtPmNhbl9zdGFsbCwg d2hpY2ggaXMgaW50cm9kdWNlZCBpbgo+IAo+IGh0dHBzOi8vd3d3LnNwaW5pY3MubmV0L2xpc3Rz L2xpbnV4LXBjaS9tc2c5NDU1OS5odG1sCj4gCj4gVW5mb3J0dW5hdGVseSwgdGhlIHBhdGNoIGRv ZXMgbm90IGNhdGNoIHY1LjgsIHNvIHdlIGhhdmUgdG8gd2FpdC4KPiBBbmQgd2Ugd2FudCB0byBj aGVjayB3aGV0aGVyIHRoaXMgaXMgYSByaWdodCBtZXRob2QgdG8gc29sdmUgdGhpcyBpc3N1ZS4K CldlIGNhbid0IHRha2UgbmV3IGFwaXMgd2l0aG91dCBhIHJlYWwgdXNlciwgc28gcGxlYXNlIHN1 Ym1pdCB0aGVtIGFsbCBhdApvbmNlLgoKdGhhbmtzLAoKZ3JlZyBrLWgKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGlu ZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMu aW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK