File 5bb60d65-vtd-add-shared-EPT-check.patch of Package xen.10697

# Commit e30c47cd8be8ba73cfc1ec7b1ebd036464708a24
# Date 2018-10-04 14:53:57 +0200
# Author Paul Durrant <paul.durrant@citrix.com>
# Committer Jan Beulich <jbeulich@suse.com>
vtd: add missing check for shared EPT...

...in intel_iommu_unmap_page().

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1783,6 +1783,10 @@ static int intel_iommu_map_page(
 
 static int intel_iommu_unmap_page(struct domain *d, unsigned long gfn)
 {
+    /* Do nothing if VT-d shares EPT page table */
+    if ( iommu_use_hap_pt(d) )
+        return 0;
+
     /* Do nothing if dom0 and iommu supports pass thru. */
     if ( iommu_passthrough && (d->domain_id == 0) )
         return 0;