From patchwork Tue Aug 24 14:46:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12455313 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D35C9C4338F for ; Tue, 24 Aug 2021 15:03:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC7B26127B for ; Tue, 24 Aug 2021 15:03:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237988AbhHXPEB (ORCPT ); Tue, 24 Aug 2021 11:04:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237850AbhHXPEA (ORCPT ); Tue, 24 Aug 2021 11:04:00 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11630C061757 for ; Tue, 24 Aug 2021 08:03:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=beriN+76+IgDT3kF/HO3UHFxFMBT+3NVGyypp95gbyc=; b=arieDQ8ZHaA8f5c4cSbuost16y xuq21RsnIlwcUnCNoG1bl08f+uDpypqnI8VttFPBvchFA2jVB/MDyzJZAn5Leo+KpF7qzhXuPtOz1 6zphjdPDF/F/Y9AhpoeC/J7dBPG0gY/eJTSJav3tjHkEw253NX4fJ5WOlE8jXmMDbwERYBeesqD2L gt17Mjj4TzFiffk6Kz1D1JS/8lO9m6FVqi6rp4t0jSewAMixzgV6qJaSxWqR4Qnox8ZJaxpw6a8Re TkzKCCNBmQPJcE0U91aUDfSyhCd3BkIW8GNpuWuQXySw5pBFLiY2cW02EsW2DnCeCelTI29Tnl1EU CCDDJC2Q==; Received: from [2001:4bb8:193:fd10:b8ba:7bad:652e:75fa] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIXug-00BCjw-Kq; Tue, 24 Aug 2021 15:01:12 +0000 From: Christoph Hellwig To: Alex Williamson Cc: Diana Craciun , Cornelia Huck , Kirti Wankhede , Eric Auger , Jason Gunthorpe , kvm@vger.kernel.org Subject: [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Date: Tue, 24 Aug 2021 16:46:46 +0200 Message-Id: <20210824144649.1488190-12-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210824144649.1488190-1-hch@lst.de> References: <20210824144649.1488190-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Pass the group flags to ->attach_group and remove the messy check for the bus type. Signed-off-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe --- drivers/vfio/vfio.c | 11 +++++------ drivers/vfio/vfio.h | 7 ++++++- drivers/vfio/vfio_iommu_spapr_tce.c | 2 +- drivers/vfio/vfio_iommu_type1.c | 19 ++----------------- 4 files changed, 14 insertions(+), 25 deletions(-) diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 26663dfa19e70d..a140ce3b15196d 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -68,9 +68,6 @@ struct vfio_unbound_dev { struct list_head unbound_next; }; -#define VFIO_MEDIATED (1 << 0) -#define VFIO_NOIOMMU (1 << 1) - struct vfio_group { struct kref kref; int minor; @@ -198,7 +195,7 @@ static long vfio_noiommu_ioctl(void *iommu_data, } static int vfio_noiommu_attach_group(void *iommu_data, - struct iommu_group *iommu_group) + struct iommu_group *iommu_group, unsigned int flags) { return 0; } @@ -1100,7 +1097,8 @@ static int __vfio_container_attach_groups(struct vfio_container *container, int ret = -ENODEV; list_for_each_entry(group, &container->group_list, container_next) { - ret = driver->ops->attach_group(data, group->iommu_group); + ret = driver->ops->attach_group(data, group->iommu_group, + group->flags); if (ret) goto unwind; } @@ -1358,7 +1356,8 @@ static int vfio_group_set_container(struct vfio_group *group, int container_fd) driver = container->iommu_driver; if (driver) { ret = driver->ops->attach_group(container->iommu_data, - group->iommu_group); + group->iommu_group, + group->flags); if (ret) goto unlock_out; } diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index a78de649eb2f16..0c1a88fa991545 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -9,6 +9,10 @@ enum vfio_iommu_notify_type { VFIO_IOMMU_CONTAINER_CLOSE = 0, }; +/* flags for group->flags and ->attach_group */ +#define VFIO_MEDIATED (1 << 0) +#define VFIO_NOIOMMU (1 << 1) + /** * struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks */ @@ -20,7 +24,8 @@ struct vfio_iommu_driver_ops { long (*ioctl)(void *iommu_data, unsigned int cmd, unsigned long arg); int (*attach_group)(void *iommu_data, - struct iommu_group *group); + struct iommu_group *group, + unsigned int flags); void (*detach_group)(void *iommu_data, struct iommu_group *group); int (*pin_pages)(void *iommu_data, diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index 3efd09faeca4a8..7567328d347d25 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -1239,7 +1239,7 @@ static long tce_iommu_take_ownership_ddw(struct tce_container *container, } static int tce_iommu_attach_group(void *iommu_data, - struct iommu_group *iommu_group) + struct iommu_group *iommu_group, unsigned int flags) { int ret = 0; struct tce_container *container = iommu_data; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 39e2706d0b3f34..44a3abdca580a0 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -36,7 +36,6 @@ #include #include #include -#include #include #include #include @@ -1934,20 +1933,6 @@ static bool vfio_iommu_has_sw_msi(struct list_head *group_resv_regions, return ret; } -static bool vfio_bus_is_mdev(struct bus_type *bus) -{ - struct bus_type *mdev_bus; - bool ret = false; - - mdev_bus = symbol_get(mdev_bus_type); - if (mdev_bus) { - ret = (bus == mdev_bus); - symbol_put(mdev_bus_type); - } - - return ret; -} - /* * This is a helper function to insert an address range to iova list. * The list is initially created with a single entry corresponding to @@ -2172,7 +2157,7 @@ static void vfio_iommu_iova_insert_copy(struct vfio_iommu *iommu, } static int vfio_iommu_type1_attach_group(void *iommu_data, - struct iommu_group *iommu_group) + struct iommu_group *iommu_group, unsigned int flags) { struct vfio_iommu *iommu = iommu_data; struct vfio_iommu_group *group; @@ -2207,7 +2192,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, if (ret) goto out_free; - if (vfio_bus_is_mdev(bus)) { + if (flags & VFIO_MEDIATED) { if (!iommu->external_domain) { INIT_LIST_HEAD(&domain->group_list); iommu->external_domain = domain;