diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-08-05 02:19:08 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-08-05 02:19:08 -0300 |
commit | 8dec7c70575785729a6a9e6719a955e9c545bcab (patch) | |
tree | 897b1b743b2ceb44ace956e8176b6a7e36751019 /drivers/iommu/amd_iommu_init.c | |
parent | 4411a04f871d94ae997fb7262a428fe2ee988eb3 (diff) |
Linux-libre 4.6.5-gnupck-4.6.5-gnu
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
-rw-r--r-- | drivers/iommu/amd_iommu_init.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index bf4959f42..94f1bf772 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1363,13 +1363,23 @@ static int __init amd_iommu_init_pci(void) break; } + /* + * Order is important here to make sure any unity map requirements are + * fulfilled. The unity mappings are created and written to the device + * table during the amd_iommu_init_api() call. + * + * After that we call init_device_table_dma() to make sure any + * uninitialized DTE will block DMA, and in the end we flush the caches + * of all IOMMUs to make sure the changes to the device table are + * active. + */ + ret = amd_iommu_init_api(); + init_device_table_dma(); for_each_iommu(iommu) iommu_flush_all_caches(iommu); - ret = amd_iommu_init_api(); - if (!ret) print_iommu_info(); |