x86/amd-iommu: Initialize passthrough mode when requested



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>

parent a1ca331c

arch/x86/kernel/amd_iommu_init.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -1242,12 +1242,18 @@ int __init amd_iommu_init(void)
		if (ret)
		goto free;

		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");