From: Joerg Roedel <jroedel@xxxxxxx> [ Upstream commit f44a4d7e4f1cdef73c90b1dc749c4d8a7372a8eb ] 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. Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Tested-by: Qian Cai <cai@xxxxxx> Link: https://lore.kernel.org/r/20200504125413.16798-4-joro@xxxxxxxxxx Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 bc7771498342..32de8e7bb8b4 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2386,6 +2386,7 @@ static void update_domain(struct protection_domain *domain) domain_flush_devices(domain); domain_flush_tlb_pde(domain); + domain_flush_complete(domain); } static int dir2prot(enum dma_data_direction direction) -- 2.25.1
