iommu/amd: Call domain_flush_complete() in update_domain()

joergroedel · joergroedel · commit f44a4d7e4f1c · 2020-05-05T14:38:38.000+02:00
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>
diff --git 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_devices(domain);
 	domain_flush_tlb_pde(domain);
+	domain_flush_complete(domain);
 }
 
 int __init amd_iommu_init_api(void)

Original file line number	Diff line number	Diff line change
`@@ -2321,6 +2321,7 @@ static void update_domain(struct protection_domain *domain)`
`2321`	`2321`
`2322`	`2322`	`domain_flush_devices(domain);`
`2323`	`2323`	`domain_flush_tlb_pde(domain);`
	`2324`	`+ domain_flush_complete(domain);`
`2324`	`2325`	`}`
`2325`	`2326`
`2326`	`2327`	`int __init amd_iommu_init_api(void)`