Enable VT-d Posted-Interrupts and add a command line
parameter for it.
Signed-off-by: Feng Wu <feng...@intel.com>
---
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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