tree c4ef0f8473f35374ce472fd9212596d2a45cce3f
parent 85cf2a8d7435754f685a26f95dcb43a93a84ff60
author Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 1294660205 +0200
committer Michael S. Tsirkin <mst@redhat.com> 1294663456 +0200

kvm: test for ioeventfd support on old kernels

There used to be a limit of 6 KVM io bus devices in the kernel.
On such a kernel, we can't use many ioeventfds for host notification
since the limit is reached too easily.

Add an API to test for this condition.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>