Commit fa4ba923 authored May 22, 2013 by Amos Kong Committed by Paolo Bonzini Jul 03, 2013

kvm: add detail error message when fail to add ioeventfd



I try to hotplug 28 * 8 multiple-function devices to guest with
old host kernel, ioeventfds in host kernel will be exhausted, then
qemu fails to allocate ioeventfds for blk/nic devices.

It's better to add detail error here.

Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

parent 1acd5a37

kvm-all.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -837,6 +837,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
		data, true, int128_get64(section->size),
		match_data);
		if (r < 0) {
		fprintf(stderr, "%s: error adding ioeventfd: %s\n",
		__func__, strerror(-r));
		abort();
		}
		}
		@@ -869,6 +871,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
		data, true, int128_get64(section->size),
		match_data);
		if (r < 0) {
		fprintf(stderr, "%s: error adding ioeventfd: %s\n",
		__func__, strerror(-r));
		abort();
		}
		}