diff options
| author | Markus Armbruster <armbru@redhat.com> | 2020-06-22 11:42:21 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-06-23 16:07:07 +0200 |
| commit | 1bc133365e39feb2a37747d47de281927ce1b853 (patch) | |
| tree | 6b8550a7dd9a952084d0b2cbf3a35193080cf26f /include/hw/qdev-properties.h | |
| parent | 466c2983f88b75c37d8bab0d68ca1a1ae15949a1 (diff) | |
qdev: Improve netdev property override error a bit
qdev_prop_set_netdev() fails when the property already has a non-null
value. Seems to go back to commit 30c367ed44
"qdev-properties-system.c: Allow vlan or netdev for -device, not
both", v1.7.0. Board code doesn't expect failure, and crashes:
$ qemu-system-x86_64 --nodefaults -nic user -netdev user,id=nic0 -global e1000.netdev=nic0
Unexpected error in error_set_from_qdev_prop_error() at /work/armbru/qemu/hw/core/qdev-properties.c:1101:
qemu-system-x86_64: Property 'e1000.netdev' doesn't take value '__org.qemu.nic0
'
Aborted (core dumped)
-device and device_add handle the failure:
$ qemu-system-x86_64 -nodefaults -netdev user,id=net0 -netdev user,id=net1 -device e1000,netdev=net0,netdev=net1
qemu-system-x86_64: -device e1000,netdev=net0,netdev=net1: Property 'e1000.netdev' doesn't take value 'net1'
$ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -netdev user,id=net0 -netdev user,id=net1 -global e1000.netdev=net0
QEMU 5.0.50 monitor - type 'help' for more information
(qemu) qemu-system-x86_64: warning: netdev net0 has no peer
qemu-system-x86_64: warning: netdev net1 has no peer
device_add e1000,netdev=net1
Error: Property 'e1000.netdev' doesn't take value 'net1'
Perhaps netdev property override could be made to work. Perhaps it
should. I'm not the right guy to figure this out. What I can do is
improve the error message a bit:
(qemu) device_add e1000,netdev=net1
Error: -global e1000.netdev=... conflicts with netdev=net1
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200622094227.1271650-11-armbru@redhat.com>
Diffstat (limited to 'include/hw/qdev-properties.h')
| -rw-r--r-- | include/hw/qdev-properties.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 5252bb6b1a..fc0b2f6b45 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -251,6 +251,8 @@ void qdev_prop_set_macaddr(DeviceState *dev, const char *name, void qdev_prop_set_enum(DeviceState *dev, const char *name, int value); void qdev_prop_register_global(GlobalProperty *prop); +const GlobalProperty *qdev_find_global_prop(DeviceState *dev, + const char *name); int qdev_prop_check_globals(void); void qdev_prop_set_globals(DeviceState *dev); void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev, |