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x86/amd-iommu: Initialize passthrough mode when requested

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This patch enables the passthrough mode for AMD IOMMU by
running the initialization function when iommu=pt is passed
on the kernel command line.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-09-01 15:53:54 +02:00
parent a1ca331c8a
commit 4751a95134
1 changed files with 7 additions and 1 deletions
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arch/x86/kernel/amd_iommu_init.c
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@ -1242,12 +1242,18 @@ int __init amd_iommu_init(void)
if (ret)
goto free;
ret = amd_iommu_init_dma_ops();
if (iommu_pass_through)
ret = amd_iommu_init_passthrough();
else
ret = amd_iommu_init_dma_ops();
if (ret)
goto free;
enable_iommus();
if (iommu_pass_through)
goto out;
printk(KERN_INFO "AMD IOMMU: device isolation ");
if (amd_iommu_isolate)
printk("enabled\n");