From mboxrd@z Thu Jan 1 00:00:00 1970 From: aik@ozlabs.ru Date: Mon, 06 May 2013 07:21:57 +0000 Subject: [PATCH 1/5] iommu: Move initialization earlier Message-Id: <51875a31.25ac440a.50d9.ffffe8fd@mx.google.com> List-Id: References: <1367824921-27151-1-git-send-email-y> In-Reply-To: <1367824921-27151-1-git-send-email-y> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linuxppc-dev@lists.ozlabs.org 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 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