[Xen-devel] [PATCH v2 10/11] vt-d: propagate IOMMU Device-TLB flush error up to vt-d hardware initialization

[Quan Xu <quan.xu@xxxxxxxxx>]

While IOMMU Device-TLB flush timed out, xen calls panic() at present.
However the existing panic() is going to be eliminated, so we must
propagate the IOMMU Device-TLB flush error up to vt-d hardware
initialization.

Signed-off-by: Quan Xu <quan.xu@xxxxxxxxx>

CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Kevin Tian <kevin.tian@xxxxxxxxx>
CC: Feng Wu <feng.wu@xxxxxxxxx>
---
 xen/drivers/passthrough/vtd/iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/passthrough/vtd/iommu.c 
b/xen/drivers/passthrough/vtd/iommu.c
index a821306..223522f 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -2137,8 +2137,8 @@ static int init_vtd_hw(void)
             return -EIO;
         }
     }
-    iommu_flush_all();
-    return 0;
+
+    return iommu_flush_all();
 }
 
 static void __hwdom_init setup_hwdom_rmrr(struct domain *d)
-- 
1.9.1


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel