Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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

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

drivers/iommu/amd_iommu.c

+8 −1
Original line number Diff line number Diff line
@@ -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)