Commit 3254de6b authored by Joerg Roedel's avatar Joerg Roedel

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: 492667da ('x86/amd-iommu: Remove amd_iommu_pd_table')
Cc: stable@vger.kernel.org
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent b3311b06
...@@ -2239,8 +2239,15 @@ static void update_device_table(struct protection_domain *domain) ...@@ -2239,8 +2239,15 @@ static void update_device_table(struct protection_domain *domain)
{ {
struct iommu_dev_data *dev_data; 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); 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) static void update_domain(struct protection_domain *domain)
......
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