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authorJoerg Roedel <jroedel@suse.de>2015-06-12 12:27:16 +0200
committerJoerg Roedel <jroedel@suse.de>2015-06-16 10:59:34 +0200
commit86080ccc223aabf8d0b85a504f4f06aa88e82fb3 (patch)
tree12ecb1693240725446127943322382fc1844cc82 /drivers/iommu
parentcf484d0e6939ce287e65880ffe48860165fe5cb5 (diff)
iommu/vt-d: Allocate si_domain in init_dmars()
This seperates the allocation of the si_domain from its assignment to devices. It makes sure that the iommu=pt case still works in the kdump kernel, when we have to defer the assignment of devices to domains to device driver initialization time. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel-iommu.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index e5a03f84d2f5..b43f04933015 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2763,10 +2763,6 @@ static int __init iommu_prepare_static_identity_mapping(int hw)
int i;
int ret = 0;
- ret = si_domain_init(hw);
- if (ret)
- return -EFAULT;
-
for_each_pci_dev(pdev) {
ret = dev_prepare_static_identity_mapping(&pdev->dev, hw);
if (ret)
@@ -2780,7 +2776,7 @@ static int __init iommu_prepare_static_identity_mapping(int hw)
if (dev->bus != &acpi_bus_type)
continue;
-
+
adev= to_acpi_device(dev);
mutex_lock(&adev->physical_node_lock);
list_for_each_entry(pn, &adev->physical_node_list, node) {
@@ -3114,6 +3110,12 @@ static int __init init_dmars(void)
iommu_identity_mapping |= IDENTMAP_GFX;
#endif
+ if (iommu_identity_mapping) {
+ ret = si_domain_init(hw_pass_through);
+ if (ret)
+ goto free_iommu;
+ }
+
check_tylersburg_isoch();
/*