[PATCH 3/5] iommu/amd: Call domain_flush_complete() in update_domain()

Joerg Roedel joro at 8bytes.org
Mon May 4 12:54:11 UTC 2020

From: Joerg Roedel <jroedel at suse.de>

The update_domain() function is expected to also inform the hardware
about domain changes. This needs a COMPLETION_WAIT command to be sent
to all IOMMUs which use the domain.

Tested-by: Qian Cai <cai at lca.pw>
Signed-off-by: Joerg Roedel <jroedel at suse.de>
 drivers/iommu/amd_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 68da484a69dd..d2499c86d395 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2321,6 +2321,7 @@ static void update_domain(struct protection_domain *domain)
+	domain_flush_complete(domain);
 int __init amd_iommu_init_api(void)

More information about the iommu mailing list