From patchwork Mon Jun 6 06:19:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 12870000 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9511CCA485 for ; Mon, 6 Jun 2022 06:20:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229917AbiFFGU1 (ORCPT ); Mon, 6 Jun 2022 02:20:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229920AbiFFGUK (ORCPT ); Mon, 6 Jun 2022 02:20:10 -0400 Received: from NAM04-DM6-obe.outbound.protection.outlook.com (mail-dm6nam04on2040.outbound.protection.outlook.com [40.107.102.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5362A21E0B; Sun, 5 Jun 2022 23:20:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=CMbTNfsQzZZ4Hu4qxRN2xdahDyj1n2imrw9YtdF0ZVkWdgw46P4qx66u8y6dP6lncvNcLcpH+1zsL7amCYCMyN+qJLNXda4GvCftu+AQO4M48/c74khbsDKU3B/JEJJQ2gYHU/A2BVDZTfasFzJoxhJ/gMfZm9gWrisO3mTgIN9W5Cj8Zzjzq/739CMjQJzt8t3w5ZhTRbQwWnrDQRochhDXYo3OyJWf6d5zu7HG/2CQ9FQe++efqE5zVQ2JIeHqVpHMdDMc5MKgmUHKRXboWxPRdFyKWq3oYiKJX9mk5wrQj+KghBtbHtSvZ0PlF9yQxHWTNOprdmZHfbyMZVK2QA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=8B+c+H2V+bCnzCJetNz/ttkZvQqE/XCS0a2agveDiyc=; b=MTSAv9EdIrbVQU0RbsIpUvsH5rvxCIC+WYiry5QSzrvgl02B/9zxxqxlb9KqC9GAvGFBWXCAbZRoo9Oq51bKITFL/Hrx7ppk5y77/o8n1vL8AHfXeHYUAvf5LSK8zi+3dGOxLR8A33asY8mBo4eqRe0dVnisP/rkbJrjUvz0hwUA7ognpr7vIF6TpwPSGuZkOHVNwdvbJUp1WvrhgAjuPBVIbeWtUXOTT2V+5NO9dLyrkjHuY+2aPKqDpkDPgO2e4Q2zALeFnEJw5MtpMKFi4RdZVdtvY/Wz7TpIcczXr6UdynXdAeC7uMOlbKUa2LwptOUfI2wfv7/oQbdQzS9aaA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 12.22.5.235) smtp.rcpttodomain=samsung.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8B+c+H2V+bCnzCJetNz/ttkZvQqE/XCS0a2agveDiyc=; b=H2+4eFhBXOQACIvRHWsHO018QqmROfBzKwfUz+n7RdbMNflN1GdFKX2hd2kl9v/VN7EO5eP3TjiKyLbN+CwLgQJ9OrJ2XFD5EpzqKNyis2vUchqoUSg1MnHy6lnez+DrNB/ycmbTr8Pe3pnHCuhleI9dXZP3MtZuUcGlf5Zh3b1AWN/zn7t5jvifAIylp94XCgZhaZBWABttPpNg+96mxLstBHOs7qn6cM/fwQcagkvvTuEfZtpDpfvLmrO3VKCy+4IqDvh+Wj0PecwyKfeVCovyvtNlros0iINDa2vp4bxsLOWdP9nJhFiDQoZBGnifQuji6w/o57jDl2kXRIwMxA== Received: from BN9PR03CA0604.namprd03.prod.outlook.com (2603:10b6:408:106::9) by DM6PR12MB3801.namprd12.prod.outlook.com (2603:10b6:5:1cc::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5314.15; Mon, 6 Jun 2022 06:20:06 +0000 Received: from BN8NAM11FT064.eop-nam11.prod.protection.outlook.com (2603:10b6:408:106:cafe::7) by BN9PR03CA0604.outlook.office365.com (2603:10b6:408:106::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5314.12 via Frontend Transport; Mon, 6 Jun 2022 06:20:06 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 12.22.5.235) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 12.22.5.235 as permitted sender) receiver=protection.outlook.com; client-ip=12.22.5.235; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (12.22.5.235) by BN8NAM11FT064.mail.protection.outlook.com (10.13.176.160) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.5314.12 via Frontend Transport; Mon, 6 Jun 2022 06:20:05 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by DRHQMAIL107.nvidia.com (10.27.9.16) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Mon, 6 Jun 2022 06:20:04 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 5 Jun 2022 23:20:03 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.12) by mail.nvidia.com (10.129.68.10) with Microsoft SMTP Server id 15.2.986.22 via Frontend Transport; Sun, 5 Jun 2022 23:20:01 -0700 From: Nicolin Chen To: , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH 5/5] vfio/iommu_type1: Simplify group attachment Date: Sun, 5 Jun 2022 23:19:27 -0700 Message-ID: <20220606061927.26049-6-nicolinc@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220606061927.26049-1-nicolinc@nvidia.com> References: <20220606061927.26049-1-nicolinc@nvidia.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0965645e-e480-4d14-69be-08da4784994f X-MS-TrafficTypeDiagnostic: DM6PR12MB3801:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(36840700001)(40470700004)(46966006)(47076005)(30864003)(7416002)(7406005)(70586007)(426003)(36756003)(356005)(70206006)(921005)(8676002)(1076003)(82310400005)(36860700001)(4326008)(5660300002)(8936002)(186003)(336012)(83380400001)(81166007)(2616005)(40460700003)(26005)(7696005)(2906002)(6666004)(316002)(86362001)(508600001)(54906003)(110136005)(83996005)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jun 2022 06:20:05.7845 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0965645e-e480-4d14-69be-08da4784994f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT064.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3801 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Un-inline the domain specific logic from the attach/detach_group ops into two paired functions vfio_iommu_alloc_attach_domain() and vfio_iommu_detach_destroy_domain() that strictly deal with creating and destroying struct vfio_domains. Add the logic to check for EMEDIUMTYPE return code of iommu_attach_group() and avoid the extra domain allocations and attach/detach sequences of the old code. This allows properly detecting an actual attach error, like -ENOMEM, vs treating all attach errors as an incompatible domain. Remove the duplicated domain->ops comparison that is taken care of in the IOMMU core. Co-developed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- drivers/vfio/vfio_iommu_type1.c | 306 +++++++++++++++++--------------- 1 file changed, 161 insertions(+), 145 deletions(-) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index b45b1cc118ef..c6f937e1d71f 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -86,6 +86,7 @@ struct vfio_domain { struct list_head group_list; bool fgsp : 1; /* Fine-grained super pages */ bool enforce_cache_coherency : 1; + bool msi_cookie : 1; }; struct vfio_dma { @@ -2153,12 +2154,161 @@ static void vfio_iommu_iova_insert_copy(struct vfio_iommu *iommu, list_splice_tail(iova_copy, iova); } +static struct vfio_domain * +vfio_iommu_alloc_attach_domain(struct bus_type *bus, struct vfio_iommu *iommu, + struct vfio_iommu_group *group) +{ + struct iommu_domain *new_domain; + struct vfio_domain *domain; + int ret = 0; + + /* Try to match an existing compatible domain */ + list_for_each_entry (domain, &iommu->domain_list, next) { + ret = iommu_attach_group(domain->domain, group->iommu_group); + if (ret == -EMEDIUMTYPE) + continue; + if (ret) + return ERR_PTR(ret); + list_add(&group->next, &domain->group_list); + return domain; + } + + new_domain = iommu_domain_alloc(bus); + if (!new_domain) + return ERR_PTR(-EIO); + + if (iommu->nesting) { + ret = iommu_enable_nesting(new_domain); + if (ret) + goto out_free_iommu_domain; + } + + ret = iommu_attach_group(new_domain, group->iommu_group); + if (ret) + goto out_free_iommu_domain; + + domain = kzalloc(sizeof(*domain), GFP_KERNEL); + if (!domain) { + ret = -ENOMEM; + goto out_detach; + } + + domain->domain = new_domain; + vfio_test_domain_fgsp(domain); + + /* + * If the IOMMU can block non-coherent operations (ie PCIe TLPs with + * no-snoop set) then VFIO always turns this feature on because on Intel + * platforms it optimizes KVM to disable wbinvd emulation. + */ + if (new_domain->ops->enforce_cache_coherency) + domain->enforce_cache_coherency = + new_domain->ops->enforce_cache_coherency(new_domain); + + /* replay mappings on new domains */ + ret = vfio_iommu_replay(iommu, domain); + if (ret) + goto out_free_domain; + + /* + * An iommu backed group can dirty memory directly and therefore + * demotes the iommu scope until it declares itself dirty tracking + * capable via the page pinning interface. + */ + iommu->num_non_pinned_groups++; + + INIT_LIST_HEAD(&domain->group_list); + list_add(&group->next, &domain->group_list); + list_add(&domain->next, &iommu->domain_list); + vfio_update_pgsize_bitmap(iommu); + return domain; + +out_free_domain: + kfree(domain); +out_detach: + iommu_detach_group(domain->domain, group->iommu_group); +out_free_iommu_domain: + iommu_domain_free(new_domain); + return ERR_PTR(ret); +} + +static void vfio_iommu_unmap_unpin_all(struct vfio_iommu *iommu) +{ + struct rb_node *node; + + while ((node = rb_first(&iommu->dma_list))) + vfio_remove_dma(iommu, rb_entry(node, struct vfio_dma, node)); +} + +static void vfio_iommu_unmap_unpin_reaccount(struct vfio_iommu *iommu) +{ + struct rb_node *n, *p; + + n = rb_first(&iommu->dma_list); + for (; n; n = rb_next(n)) { + struct vfio_dma *dma; + long locked = 0, unlocked = 0; + + dma = rb_entry(n, struct vfio_dma, node); + unlocked += vfio_unmap_unpin(iommu, dma, false); + p = rb_first(&dma->pfn_list); + for (; p; p = rb_next(p)) { + struct vfio_pfn *vpfn = rb_entry(p, struct vfio_pfn, + node); + + if (!is_invalid_reserved_pfn(vpfn->pfn)) + locked++; + } + vfio_lock_acct(dma, locked - unlocked, true); + } +} + +static void vfio_iommu_detach_destroy_domain(struct vfio_domain *domain, + struct vfio_iommu *iommu, + struct vfio_iommu_group *group) +{ + iommu_detach_group(domain->domain, group->iommu_group); + list_del(&group->next); + if (!list_empty(&domain->group_list)) + return; + + /* + * Group ownership provides privilege, if the group list is empty, the + * domain goes away. If it's the last domain with iommu and external + * domain doesn't exist, then all the mappings go away too. If it's the + * last domain with iommu and external domain exist, update accounting + */ + if (list_is_singular(&iommu->domain_list)) { + if (list_empty(&iommu->emulated_iommu_groups)) { + WARN_ON(iommu->notifier.head); + vfio_iommu_unmap_unpin_all(iommu); + } else { + vfio_iommu_unmap_unpin_reaccount(iommu); + } + } + iommu_domain_free(domain->domain); + list_del(&domain->next); + kfree(domain); + + /* + * Removal of a group without dirty tracking may allow the iommu scope + * to be promoted. + */ + if (!group->pinned_page_dirty_scope) { + iommu->num_non_pinned_groups--; + if (iommu->dirty_page_tracking) + vfio_iommu_populate_bitmap_full(iommu); + } + + vfio_update_pgsize_bitmap(iommu); +} + static int vfio_iommu_type1_attach_group(void *iommu_data, struct iommu_group *iommu_group, enum vfio_group_type type) { struct vfio_iommu *iommu = iommu_data; struct vfio_iommu_group *group; - struct vfio_domain *domain, *d; + struct vfio_domain *domain; struct bus_type *bus = NULL; bool resv_msi, msi_remap; phys_addr_t resv_msi_base = 0; @@ -2197,26 +2347,12 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, if (ret) goto out_free_group; - ret = -ENOMEM; - domain = kzalloc(sizeof(*domain), GFP_KERNEL); - if (!domain) + domain = vfio_iommu_alloc_attach_domain(bus, iommu, group); + if (IS_ERR(domain)) { + ret = PTR_ERR(domain); goto out_free_group; - - ret = -EIO; - domain->domain = iommu_domain_alloc(bus); - if (!domain->domain) - goto out_free_domain; - - if (iommu->nesting) { - ret = iommu_enable_nesting(domain->domain); - if (ret) - goto out_domain; } - ret = iommu_attach_group(domain->domain, group->iommu_group); - if (ret) - goto out_domain; - /* Get aperture info */ geo = &domain->domain->geometry; if (vfio_iommu_aper_conflict(iommu, geo->aperture_start, @@ -2254,9 +2390,6 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, resv_msi = vfio_iommu_has_sw_msi(&group_resv_regions, &resv_msi_base); - INIT_LIST_HEAD(&domain->group_list); - list_add(&group->next, &domain->group_list); - msi_remap = irq_domain_check_msi_remap() || iommu_capable(bus, IOMMU_CAP_INTR_REMAP); @@ -2267,117 +2400,32 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, goto out_detach; } - /* - * If the IOMMU can block non-coherent operations (ie PCIe TLPs with - * no-snoop set) then VFIO always turns this feature on because on Intel - * platforms it optimizes KVM to disable wbinvd emulation. - */ - if (domain->domain->ops->enforce_cache_coherency) - domain->enforce_cache_coherency = - domain->domain->ops->enforce_cache_coherency( - domain->domain); - - /* - * Try to match an existing compatible domain. We don't want to - * preclude an IOMMU driver supporting multiple bus_types and being - * able to include different bus_types in the same IOMMU domain, so - * we test whether the domains use the same iommu_ops rather than - * testing if they're on the same bus_type. - */ - list_for_each_entry(d, &iommu->domain_list, next) { - if (d->domain->ops == domain->domain->ops) { - iommu_detach_group(domain->domain, group->iommu_group); - if (!iommu_attach_group(d->domain, - group->iommu_group)) { - list_add(&group->next, &d->group_list); - iommu_domain_free(domain->domain); - kfree(domain); - goto done; - } - - ret = iommu_attach_group(domain->domain, - group->iommu_group); - if (ret) - goto out_domain; - } - } - - vfio_test_domain_fgsp(domain); - - /* replay mappings on new domains */ - ret = vfio_iommu_replay(iommu, domain); - if (ret) - goto out_detach; - - if (resv_msi) { + if (resv_msi && !domain->msi_cookie) { ret = iommu_get_msi_cookie(domain->domain, resv_msi_base); if (ret && ret != -ENODEV) goto out_detach; + domain->msi_cookie = true; } - list_add(&domain->next, &iommu->domain_list); - vfio_update_pgsize_bitmap(iommu); -done: /* Delete the old one and insert new iova list */ vfio_iommu_iova_insert_copy(iommu, &iova_copy); - /* - * An iommu backed group can dirty memory directly and therefore - * demotes the iommu scope until it declares itself dirty tracking - * capable via the page pinning interface. - */ - iommu->num_non_pinned_groups++; mutex_unlock(&iommu->lock); vfio_iommu_resv_free(&group_resv_regions); return 0; out_detach: - iommu_detach_group(domain->domain, group->iommu_group); -out_domain: - iommu_domain_free(domain->domain); - vfio_iommu_iova_free(&iova_copy); - vfio_iommu_resv_free(&group_resv_regions); -out_free_domain: - kfree(domain); + vfio_iommu_detach_destroy_domain(domain, iommu, group); out_free_group: kfree(group); out_unlock: mutex_unlock(&iommu->lock); + vfio_iommu_iova_free(&iova_copy); + vfio_iommu_resv_free(&group_resv_regions); return ret; } -static void vfio_iommu_unmap_unpin_all(struct vfio_iommu *iommu) -{ - struct rb_node *node; - - while ((node = rb_first(&iommu->dma_list))) - vfio_remove_dma(iommu, rb_entry(node, struct vfio_dma, node)); -} - -static void vfio_iommu_unmap_unpin_reaccount(struct vfio_iommu *iommu) -{ - struct rb_node *n, *p; - - n = rb_first(&iommu->dma_list); - for (; n; n = rb_next(n)) { - struct vfio_dma *dma; - long locked = 0, unlocked = 0; - - dma = rb_entry(n, struct vfio_dma, node); - unlocked += vfio_unmap_unpin(iommu, dma, false); - p = rb_first(&dma->pfn_list); - for (; p; p = rb_next(p)) { - struct vfio_pfn *vpfn = rb_entry(p, struct vfio_pfn, - node); - - if (!is_invalid_reserved_pfn(vpfn->pfn)) - locked++; - } - vfio_lock_acct(dma, locked - unlocked, true); - } -} - /* * Called when a domain is removed in detach. It is possible that * the removed domain decided the iova aperture window. Modify the @@ -2491,44 +2539,12 @@ static void vfio_iommu_type1_detach_group(void *iommu_data, group = find_iommu_group(domain, iommu_group); if (!group) continue; - - iommu_detach_group(domain->domain, group->iommu_group); - list_del(&group->next); - /* - * Group ownership provides privilege, if the group list is - * empty, the domain goes away. If it's the last domain with - * iommu and external domain doesn't exist, then all the - * mappings go away too. If it's the last domain with iommu and - * external domain exist, update accounting - */ - if (list_empty(&domain->group_list)) { - if (list_is_singular(&iommu->domain_list)) { - if (list_empty(&iommu->emulated_iommu_groups)) { - WARN_ON(iommu->notifier.head); - vfio_iommu_unmap_unpin_all(iommu); - } else { - vfio_iommu_unmap_unpin_reaccount(iommu); - } - } - iommu_domain_free(domain->domain); - list_del(&domain->next); - kfree(domain); - vfio_iommu_aper_expand(iommu, &iova_copy); - vfio_update_pgsize_bitmap(iommu); - /* - * Removal of a group without dirty tracking may allow - * the iommu scope to be promoted. - */ - if (!group->pinned_page_dirty_scope) { - iommu->num_non_pinned_groups--; - if (iommu->dirty_page_tracking) - vfio_iommu_populate_bitmap_full(iommu); - } - } + vfio_iommu_detach_destroy_domain(domain, iommu, group); kfree(group); break; } + vfio_iommu_aper_expand(iommu, &iova_copy); if (!vfio_iommu_resv_refresh(iommu, &iova_copy)) vfio_iommu_iova_insert_copy(iommu, &iova_copy); else