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tests/acceptance: test virtio-ccw revision handling 

The max_revision prop of virtio-ccw devices can be used to force
an older revision for compatibility handling. The easiest way to
check this is to force a device to revision 0, which turns off
virtio-1.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
[re-formatted overlong lines]
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20201130180216.15366-2-cohuck@redhat.com>
This commit is contained in:
Cornelia Huck 2020-11-30 19:02:14 +01:00
parent 2d9ca5a37b
commit 083470b579
1 changed files with 18 additions and 2 deletions
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20
tests/acceptance/machine_s390_ccw_virtio.py
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@ -51,6 +51,10 @@ class S390CCWVirtioMachine(Test):
'-initrd', initrd_path,
'-append', kernel_command_line,
'-device', 'virtio-net-ccw,devno=fe.1.1111',
'-device',
'virtio-rng-ccw,devno=fe.2.0000,max_revision=0',
'-device',
'virtio-rng-ccw,devno=fe.3.1234,max_revision=2',
'-device', 'zpci,uid=5,target=zzz',
'-device', 'virtio-net-pci,id=zzz')
self.vm.launch()
@ -60,9 +64,21 @@ class S390CCWVirtioMachine(Test):
# first debug shell is too early, we need to wait for device detection
exec_command_and_wait_for_pattern(self, 'exit', shell_ready)
ccw_bus_id="0.1.1111"
ccw_bus_ids="0.1.1111 0.2.0000 0.3.1234"
pci_bus_id="0005:00:00.0"
exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
ccw_bus_id)
ccw_bus_ids)
exec_command_and_wait_for_pattern(self, 'ls /sys/bus/pci/devices/',
pci_bus_id)
# check that the device at 0.2.0000 is in legacy mode, while the
# device at 0.3.1234 has the virtio-1 feature bit set
virtio_rng_features="00000000000000000000000000001100" + \
"10000000000000000000000000000000"
virtio_rng_features_legacy="00000000000000000000000000001100" + \
"00000000000000000000000000000000"
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.2.0000/virtio?/features',
virtio_rng_features_legacy)
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.3.1234/virtio?/features',
virtio_rng_features)