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| author | Joerg Roedel <jroedel@suse.de> | 2015-06-12 15:40:01 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-06-16 11:59:35 +0300 |
| commit | 8939ddf6d65264cf9f014ffd7c9bff02ad9626e6 (patch) | |
| tree | 6682340f0e2940871ba2bdab662389fe808f51a7 | |
| parent | 60b523ecfede05796aa77024b3960fecabab4de7 (diff) | |
| download | linux-8939ddf6d65264cf9f014ffd7c9bff02ad9626e6.tar.xz | |
iommu/vt-d: Enable Translation only if it was previously disabled
Do not touch the TE bit unless we know translation is
disabled.
Tested-by: ZhenHua Li <zhen-hual@hp.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index e40c858a84fe..a98a7b27aca1 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3204,7 +3204,9 @@ domains_done: if (ret) goto free_iommu; - iommu_enable_translation(iommu); + if (!translation_pre_enabled(iommu)) + iommu_enable_translation(iommu); + iommu_disable_protect_mem_regions(iommu); } |