diff mbox

[v4,05/10] vt-d: propagate IOMMU Device-TLB flush error up to IOMMU mapping.

Message ID 1462524880-67205-6-git-send-email-quan.xu@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Quan Xu May 6, 2016, 8:54 a.m. UTC 
Propagate the IOMMU Device-TLB flush error up to IOMMU mapping.

Signed-off-by: Quan Xu <quan.xu@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

CC: Kevin Tian <kevin.tian@intel.com>
CC: Feng Wu <feng.wu@intel.com>
CC: Jan Beulich <jbeulich@suse.com>
---
 xen/drivers/passthrough/vtd/iommu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index e0e1126..584982a 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1716,6 +1716,7 @@  static int intel_iommu_map_page(
     struct domain_iommu *hd = dom_iommu(d);
     struct dma_pte *page = NULL, *pte = NULL, old, new = { 0 };
     u64 pg_maddr;
+    int rc = 0;
 
     /* Do nothing if VT-d shares EPT page table */
     if ( iommu_use_hap_pt(d) )
@@ -1758,9 +1759,9 @@  static int intel_iommu_map_page(
     unmap_vtd_domain_page(page);
 
     if ( !this_cpu(iommu_dont_flush_iotlb) )
-        iommu_flush_iotlb(d, gfn, dma_pte_present(old), 1);
+        rc = iommu_flush_iotlb(d, gfn, dma_pte_present(old), 1);
 
-    return 0;
+    return rc;
 }
 
 static int intel_iommu_unmap_page(struct domain *d, unsigned long gfn)