From: Yury Kotov <yury-kotov@yandex-team.ru>

Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru>
Message-Id: <20190607090830.18807-1-yury-kotov@yandex-team.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 accel/kvm/kvm-all.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index b0c4bed..d2f481a 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -863,8 +863,8 @@ 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));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -881,6 +881,8 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
                                data, false, int128_get64(section->size),
                                match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -897,8 +899,8 @@ 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));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -916,6 +918,8 @@ static void kvm_io_ioeventfd_del(MemoryListener *listener,
                               data, false, int128_get64(section->size),
                               match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
-- 
1.8.3.1