[Xen-devel] [RFC v1 15/15] Add a command line parameter for VT-d posted-interrupts

[Feng Wu <feng.wu@xxxxxxxxx>]

Enable VT-d Posted-Interrupts and add a command line
parameter for it.

Signed-off-by: Feng Wu <feng.wu@xxxxxxxxx>
---
 xen/drivers/passthrough/iommu.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index 302e3e4..1bda7e9 100644
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -52,7 +52,7 @@ bool_t __read_mostly iommu_passthrough;
 bool_t __read_mostly iommu_snoop = 1;
 bool_t __read_mostly iommu_qinval = 1;
 bool_t __read_mostly iommu_intremap = 1;
-bool_t __read_mostly iommu_intpost = 0;
+bool_t __read_mostly iommu_intpost = 1;
 bool_t __read_mostly iommu_hap_pt_share = 1;
 bool_t __read_mostly iommu_debug;
 bool_t __read_mostly amd_iommu_perdev_intremap = 1;
@@ -101,6 +101,12 @@ static void __init parse_iommu_param(char *s)
             if ( iommu_intremap == 0 )
                 iommu_intpost = 0;
         }
+        else if ( !strcmp(s, "intpost") )
+        {
+            iommu_intpost = val;
+            if ( iommu_intremap == 0 )
+                iommu_intpost = 0;
+        }
         else if ( !strcmp(s, "debug") )
         {
             iommu_debug = val;
-- 
2.1.0


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