update_domain() is the only place where domain->pt_root will be got and
set into dev entry. So before the device driver initialization we do
nothing if it's in previously enabled translation status.
Signed-off-by: Baoquan He <bhe at redhat.com>
---
drivers/iommu/amd_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 0d59f79..aee1ae4 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2350,7 +2350,7 @@ static void update_device_table(struct protection_domain *domain)
static void update_domain(struct protection_domain *domain)
{
- if (!domain->updated)
+ if (!domain->updated || translation_pre_enabled())
return;
update_device_table(domain);
--
2.4.0
