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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED,USER_AGENT_GIT autolearn=ham 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 848BEC43462 for ; Mon, 10 May 2021 14:22:45 +0000 (UTC) Received: from smtp4.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 33CD2611BD for ; Mon, 10 May 2021 14:22:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 33CD2611BD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 80E5C40649; Mon, 10 May 2021 14:22:43 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NzZ_yRXWIM-j; Mon, 10 May 2021 14:22:42 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTP id 2B27C40E6F; Mon, 10 May 2021 14:22:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 60130C002D; Mon, 10 May 2021 14:22:41 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id A7DF5C0001 for ; Mon, 10 May 2021 14:22:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 8FBB140538 for ; Mon, 10 May 2021 14:22:39 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id q1htSItGJEYz for ; Mon, 10 May 2021 14:22:39 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by smtp2.osuosl.org (Postfix) with ESMTPS id E9213404F7 for ; Mon, 10 May 2021 14:22:38 +0000 (UTC) Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Ff39B4WTgz1BKvs; Mon, 10 May 2021 22:19:58 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.498.0; Mon, 10 May 2021 22:22:26 +0800 From: John Garry To: , , , , Subject: [PATCH v2 07/15] iommu: Add iommu_realloc_dev_group() Date: Mon, 10 May 2021 22:17:21 +0800 Message-ID: <1620656249-68890-8-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1620656249-68890-1-git-send-email-john.garry@huawei.com> References: <1620656249-68890-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Cc: linux-scsi@vger.kernel.org, linuxarm@huawei.com, linux-kernel@vger.kernel.org, sai.praneeth.prakhya@intel.com, iommu@lists.linux-foundation.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add a function to re-alloc IOMMU group default domain. Signed-off-by: John Garry --- drivers/iommu/iommu.c | 12 ++++++++++++ include/linux/iommu.h | 6 ++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index f7253a973ab9..bdb9aa47dfca 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -3191,6 +3191,18 @@ static int iommu_change_dev_def_domain(struct iommu_group *group, return ret; } +int iommu_realloc_dev_group(struct device *dev) +{ + struct iommu_group *group; + int ret; + + group = iommu_group_get(dev); + ret = iommu_change_dev_def_domain(group, dev, 0, true); + iommu_group_put(group); + + return ret; +} + /* * Changing the default domain or any other IOMMU group attribute through sysfs * requires the users to unbind the drivers from the devices in the IOMMU group. diff --git a/include/linux/iommu.h b/include/linux/iommu.h index e26abda94792..6e187746af0f 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -482,6 +482,7 @@ bool iommu_get_dma_strict(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); +extern int iommu_realloc_dev_group(struct device *dev); static inline void iommu_flush_iotlb_all(struct iommu_domain *domain) { @@ -699,6 +700,11 @@ static inline size_t iommu_map_sg_atomic(struct iommu_domain *domain, return 0; } +static inline int iommu_realloc_dev_group(struct device *dev) +{ + return -ENODEV; +} + static inline void iommu_flush_iotlb_all(struct iommu_domain *domain) { } -- 2.26.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu