iommu/vt-d: Init QI before root entry is allocated
QI needs to be available when we write the root entry into
hardware because flushes might be necessary after this.
Tested-by: ZhenHua Li <zhen-hual@hp.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 4faec33..989761c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2803,6 +2803,8 @@
for_each_active_iommu(iommu, drhd) {
g_iommus[iommu->seq_id] = iommu;
+ intel_iommu_init_qi(iommu);
+
ret = iommu_init_domains(iommu);
if (ret)
goto free_iommu;
@@ -2819,9 +2821,6 @@
hw_pass_through = 0;
}
- for_each_active_iommu(iommu, drhd)
- intel_iommu_init_qi(iommu);
-
if (iommu_pass_through)
iommu_identity_mapping |= IDENTMAP_ALL;