[Xen-devel] [PATCH] Intel VT-d: Dump IOMMU supported page sizes

[Santosh Jodh <santosh.jodh@xxxxxxxxxx>]

diff -r e6266fc76d08 -r 6feac926cf80 xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c       Fri Jul 27 12:22:13 2012 +0200
+++ b/xen/drivers/passthrough/vtd/iommu.c       Mon Jul 30 15:35:16 2012 -0700
@@ -2137,6 +2137,15 @@ int __init intel_vtd_setup(void)
     {
         iommu = drhd->iommu;
 
+        printk("Intel VT-d supported page sizes: 4kB");
+        if (cap_sps_2mb(iommu->cap))
+            printk(", 2MB");
+
+        if (cap_sps_1gb(iommu->cap))
+            printk(", 1GB");
+
+        printk(".\n");
+
         if ( iommu_snoop && !ecap_snp_ctl(iommu->ecap) )
             iommu_snoop = 0;
 

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