[XEN RFC PATCH v6 03/11] x86/domain: Defer domain iommu initialization.

["Teddy Astie" <teddy.astie@xxxxxxxxxx>]

For the IOMMU redesign, the iommu context pagetable is defined once during
initialization. When reusing P2M pagetable, we want to ensure that this
pagetable is properly initialized.

Signed-off-by: Teddy Astie <teddy.astie@xxxxxxxxxx>
---
 xen/arch/x86/domain.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 78a13e6812..48bf9625e2 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -858,9 +858,6 @@ int arch_domain_create(struct domain *d,
     if ( (rc = init_domain_irq_mapping(d)) != 0 )
         goto fail;
 
-    if ( (rc = iommu_domain_init(d, config->iommu_opts)) != 0 )
-        goto fail;
-
     psr_domain_init(d);
 
     if ( is_hvm_domain(d) )
@@ -879,6 +876,9 @@ int arch_domain_create(struct domain *d,
     else
         ASSERT_UNREACHABLE(); /* Not HVM and not PV? */
 
+    if ( (rc = iommu_domain_init(d, config->iommu_opts)) != 0 )
+        goto fail;
+
     if ( (rc = tsc_set_info(d, XEN_CPUID_TSC_MODE_DEFAULT, 0, 0, 0)) != 0 )
     {
         ASSERT_UNREACHABLE();
-- 
2.47.2



Teddy Astie | Vates XCP-ng Developer

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