From mboxrd@z Thu Jan 1 00:00:00 1970 From: aik@ozlabs.ru Subject: [PATCH 1/5] iommu: Move initialization earlier Date: Mon, 6 May 2013 17:21:57 +1000 Message-ID: <51875a31.25ac440a.50d9.ffffe8fd@mx.google.com> References: <1367824921-27151-1-git-send-email-y> Cc: Alexey Kardashevskiy , David Gibson , Benjamin Herrenschmidt , Alex Williamson , Paul Mackerras , Alexander Graf , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org, linux-pci@vger.kernel.org To: linuxppc-dev@lists.ozlabs.org Return-path: In-Reply-To: <1367824921-27151-1-git-send-email-y> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Alexey Kardashevskiy The iommu_init() call initializes IOMMU internal structures and data required for the API to function such as iommu_group_alloc(). It is registered as a subsys_initcall. One of the IOMMU users is a PCI subsystem on POWER which discovers new IOMMU tables during the PCI scan so the most logical place to call iommu_group_alloc() is when a new group is just discovered. However PCI scan is done from subsys_initcall hook as well, which makes use of the IOMMU API impossible. This moves IOMMU subsystem initialization one step earlier. Signed-off-by: Alexey Kardashevskiy Cc: David Gibson Signed-off-by: Paul Mackerras --- drivers/iommu/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 5514dfa..0de83eb 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -890,7 +890,7 @@ static int __init iommu_init(void) return 0; } -subsys_initcall(iommu_init); +arch_initcall(iommu_init); int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) -- 1.7.10.4