KVM: Downsize max support MSI-X entry to 256

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>

diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 65df6f5..632a856 100644 (file)
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -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;