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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 09169C2D0C3 for ; Wed, 18 Dec 2019 10:02:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D370324679 for ; Wed, 18 Dec 2019 10:02:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gDIHU+Tg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726671AbfLRKCt (ORCPT ); Wed, 18 Dec 2019 05:02:49 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:26412 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725799AbfLRKCt (ORCPT ); Wed, 18 Dec 2019 05:02:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576663368; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wNl30ngwplpkjNMccFNGBwXPzMVQNo8XvrbBUj1dPsg=; b=gDIHU+Tg7AcSxb/JSsdBOQ4TAppDij8pWks3+yzU8mGcEu+NIPzr/GaaHCNyTat/1f1+fk /9VU30Lrppyd8mwLzzWPjpyJT2Ywu+rFg5tmCWG76owABEj+DYu8v02nbkSC7RBni4vuph uCmZTVLL0DHvzBVJBikHsxvpzvA2WdY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-86-z-uiARqFMSS96uPc4V83jw-1; Wed, 18 Dec 2019 05:02:42 -0500 X-MC-Unique: z-uiARqFMSS96uPc4V83jw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B99D6DB24; Wed, 18 Dec 2019 10:02:39 +0000 (UTC) Received: from [10.36.116.117] (ovpn-116-117.ams2.redhat.com [10.36.116.117]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9FA537D903; Wed, 18 Dec 2019 10:02:35 +0000 (UTC) Subject: Re: [PATCH v3 12/13] PCI/ATS: Add PASID stubs To: Jean-Philippe Brucker , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, iommu@lists.linux-foundation.org Cc: joro@8bytes.org, robh+dt@kernel.org, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net, lenb@kernel.org, will@kernel.org, robin.murphy@arm.com, bhelgaas@google.com, jonathan.cameron@huawei.com, zhangfei.gao@linaro.org References: <20191209180514.272727-1-jean-philippe@linaro.org> <20191209180514.272727-13-jean-philippe@linaro.org> From: Auger Eric Message-ID: Date: Wed, 18 Dec 2019 11:02:34 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <20191209180514.272727-13-jean-philippe@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Jean, On 12/9/19 7:05 PM, Jean-Philippe Brucker wrote: > The SMMUv3 driver, which may be built without CONFIG_PCI, will soon gain > PASID support. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove > unused PRI and PASID stubs") to re-introduce the PASID stubs, and avoid > adding more #ifdefs to the SMMU driver. > > Signed-off-by: Jean-Philippe Brucker Reviewed-by: Eric Auger Thanks Eric > --- > include/linux/pci-ats.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h > index 5d62e78946a3..d08f0869f121 100644 > --- a/include/linux/pci-ats.h > +++ b/include/linux/pci-ats.h > @@ -33,6 +33,9 @@ void pci_disable_pasid(struct pci_dev *pdev); > int pci_pasid_features(struct pci_dev *pdev); > int pci_max_pasids(struct pci_dev *pdev); > #else /* CONFIG_PCI_PASID */ > +static inline int pci_enable_pasid(struct pci_dev *pdev, int features) > +{ return -EINVAL; } > +static inline void pci_disable_pasid(struct pci_dev *pdev) { } > static inline int pci_pasid_features(struct pci_dev *pdev) > { return -EINVAL; } > static inline int pci_max_pasids(struct pci_dev *pdev) >