Update interrupt related limitations for e1000em nic.
It only support one interrupt source and not support auto-clear.
Signed-off-by: Marvin Liu <yong.liu at intel.com>
diff --git a/doc/guides/nics/e1000em.rst b/doc/guides/nics/e1000em.rst
index fedafad..a84e8e1 100644
--- a/doc/guides/nics/e1000em.rst
+++ b/doc/guides/nics/e1000em.rst
@@ -176,3 +176,7 @@ The following are known limitations:
testpmd [options] -- --mbuf-size=<your-max-packet-size>
#. Qemu e1000 does not validate the checksum of incoming packets.
+
+#. Qemu e1000 only support one interrupt source, so link and Rx interrupt
should be exclusive.
+
+#. Qemu e1000 does not support interrupt auto-clear, application should
disable interrupt immediately when waked up.
--
1.9.3
