KVM: Downsize max support MSI-X entry to 256
authorSheng Yang <sheng@linux.intel.com>
Thu, 21 May 2009 05:50:13 +0000 (13:50 +0800)
committerAvi Kivity <avi@redhat.com>
Thu, 10 Sep 2009 05:32:43 +0000 (08:32 +0300)
We only trap one page for MSI-X entry now, so it's 4k/(128/8) = 256 entries at
most.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
include/linux/kvm.h

index 65df6f5e2b984595c7a111453b45497c7d4ac222..632a8560dbcfc36cc17b97783b0f000c7e5edff6 100644 (file)
@@ -676,7 +676,7 @@ struct kvm_assigned_msix_nr {
        __u16 padding;
 };
 
-#define KVM_MAX_MSIX_PER_DEV           512
+#define KVM_MAX_MSIX_PER_DEV           256
 struct kvm_assigned_msix_entry {
        __u32 assigned_dev_id;
        __u32 gsi;