From patchwork Wed Feb 16 20:39:59 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 568381 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1GKeerp029843 for ; Wed, 16 Feb 2011 20:40:40 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754470Ab1BPUkh (ORCPT ); Wed, 16 Feb 2011 15:40:37 -0500 Received: from mx1.redhat.com ([209.132.183.28]:14350 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754468Ab1BPUkg (ORCPT ); Wed, 16 Feb 2011 15:40:36 -0500 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p1GKe0pL011926 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 16 Feb 2011 15:40:00 -0500 Received: from s20.home (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p1GKdxGb024523; Wed, 16 Feb 2011 15:39:59 -0500 From: Alex Williamson Subject: [PATCH v2 1/2] intel-iommu: Unlink domain from iommu To: dwmw2@infradead.org, iommu@lists.linux-foundation.org Cc: alex.williamson@redhat.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, ddutile@redhat.com, chrisw@redhat.com Date: Wed, 16 Feb 2011 13:39:59 -0700 Message-ID: <20110216203947.2979.45119.stgit@s20.home> In-Reply-To: <20110216203204.2979.13203.stgit@s20.home> References: <20110216203204.2979.13203.stgit@s20.home> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 16 Feb 2011 20:40:42 +0000 (UTC) diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 4789f8e..b670b06 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3260,9 +3260,15 @@ static int device_notifier(struct notifier_block *nb, if (!domain) return 0; - if (action == BUS_NOTIFY_UNBOUND_DRIVER && !iommu_pass_through) + if (action == BUS_NOTIFY_UNBOUND_DRIVER && !iommu_pass_through) { domain_remove_one_dev_info(domain, pdev); + if (!(domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE) && + !(domain->flags & DOMAIN_FLAG_STATIC_IDENTITY) && + list_empty(&domain->devices)) + domain_exit(domain); + } + return 0; } @@ -3411,6 +3417,11 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain, domain->iommu_count--; domain_update_iommu_cap(domain); spin_unlock_irqrestore(&domain->iommu_lock, tmp_flags); + + spin_lock_irqsave(&iommu->lock, tmp_flags); + clear_bit(domain->id, iommu->domain_ids); + iommu->domains[domain->id] = NULL; + spin_unlock_irqrestore(&iommu->lock, tmp_flags); } spin_unlock_irqrestore(&device_domain_lock, flags);