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| author | Joerg Roedel <jroedel@suse.de> | 2016-07-26 15:18:54 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-07-26 15:55:57 +0200 |
| commit | 3254de6bf74fe94c197c9f819fe62a3a3c36f073 (patch) | |
| tree | fc0a10176d1e30a47439a263e7404468f90f04fb /drivers/iommu | |
| parent | b3311b061de2e51db683a67092546876839df532 (diff) | |
| download | linux-3254de6bf74fe94c197c9f819fe62a3a3c36f073.tar.bz2 | |
iommu/amd: Update Alias-DTE in update_device_table()
Not doing so might cause IO-Page-Faults when a device uses
an alias request-id and the alias-dte is left in a lower
page-mode which does not cover the address allocated from
the iova-allocator.
Fixes: 492667dacc0a ('x86/amd-iommu: Remove amd_iommu_pd_table')
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index fb43cc5857c7..9703913f6bdd 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2239,8 +2239,15 @@ static void update_device_table(struct protection_domain *domain) { struct iommu_dev_data *dev_data; - list_for_each_entry(dev_data, &domain->dev_list, list) + list_for_each_entry(dev_data, &domain->dev_list, list) { set_dte_entry(dev_data->devid, domain, dev_data->ats.enabled); + + if (dev_data->devid == dev_data->alias) + continue; + + /* There is an alias, update device table entry for it */ + set_dte_entry(dev_data->alias, domain, dev_data->ats.enabled); + } } static void update_domain(struct protection_domain *domain) |