iommu/amd: Disable iommu only if amd_iommu=off is specified

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It's ok to disable iommu early in normal kernel or in kdump kernel when
amd_iommu=off is specified. While we should not disable it in kdump kernel
when on-flight dma is still on-going.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Baoquan He 2017-08-09 16:33:44 +08:00 • committed by Joerg Roedel

parent daae2d25a4

commit 20b46dff13

1 changed files with 2 additions and 1 deletions

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drivers/iommu/amd_iommu_init.c

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