From: Joerg Roedel jroedel@suse.de
[ 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@suse.de Tested-by: Qian Cai cai@lca.pw Link: https://lore.kernel.org/r/20200504125413.16798-4-joro@8bytes.org Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- 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 18c995a16d80..2aa46a6de172 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2345,6 +2345,7 @@ static void update_domain(struct protection_domain *domain)
/* Flush domain TLB(s) and wait for completion */ domain_flush_tlb_pde(domain); + domain_flush_complete(domain); }
int __init amd_iommu_init_api(void)