From: Baoquan HE <b...@dhcp-129-10.nay.redhat.com>
The init should have been done in normal kernel, skip it in kdump
kernel. And clean up the function comments.
Signed-off-by: Baoquan He <b...@redhat.com>
---
drivers/iommu/amd_iommu_init.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 66a1fa5..47e5972 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1432,7 +1432,11 @@ static int __init amd_iommu_init_pci(void)
break;
}
- init_device_table_dma();
+ for_each_iommu(iommu) {
+ if ( !translation_pre_enabled(iommu) )
+ init_device_table_dma();
+ break;
+ }
for_each_iommu(iommu)
iommu_flush_all_caches(iommu);
@@ -1612,8 +1616,7 @@ static int __init init_memory_definitions(struct
acpi_table_header *table)
}
/*
- * Init the device table to not allow DMA access for devices and
- * suppress all page faults
+ * Init the device table to not allow DMA access for devices.
*/
static void init_device_table_dma(void)
{
--
2.5.5
