diff options
| author | Joerg Roedel <jroedel@suse.de> | 2016-07-26 15:18:54 +0200 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:57:48 +0200 |
| commit | 6cec73a838a6757bbf7c56c91f7215f2b50dd894 (patch) | |
| tree | 3e92a73555d4736300953e9bb4919d3cbb968ad9 | |
| parent | dcd84e11fcad676587ea028b664956de415740ff (diff) | |
iommu/amd: Update Alias-DTE in update_device_table()
commit 3254de6bf74fe94c197c9f819fe62a3a3c36f073 upstream.
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')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 6bde2a124..a3a056752 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2551,8 +2551,16 @@ 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->alias_data == NULL) + continue; + + /* There is an alias, update device table entry for it */ + set_dte_entry(dev_data->alias_data->devid, domain, + dev_data->alias_data->ats.enabled); + } } static void update_domain(struct protection_domain *domain) |