Re: [PATCH v4 3/4] tests/qtest/vhost-user-blk-test: Temporary hack to get tests passing on aarch64

[Eric Auger]

Hi Stefan,

On 3/8/22 11:02 AM, Stefan Hajnoczi wrote:
> On Mon, Mar 07, 2022 at 10:14:38PM +0100, Eric Auger wrote:
>> When run on ARM, basic and indirect tests currently fail with the
>> following error:
>>
>> ERROR:../tests/qtest/libqos/virtio.c:224:qvirtio_wait_used_elem:
>> assertion failed (got_desc_idx == desc_idx): (50331648 == 0)
>> Bail out! ERROR:../tests/qtest/libqos/virtio.c:224: qvirtio_wait_used_elem:
>> assertion failed (got_desc_idx == desc_idx): (50331648 == 0)
>>
>> I noticed it worked when I set up MSI and I further reduced the
>> code to a simple guest_alloc() that removes the error. At the moment
>> I am not able to identify where ths issue is and this blocks the
>> whole pci/aarch64 enablement.
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>> ---
>>  tests/qtest/vhost-user-blk-test.c | 6 ++++++
>>  1 file changed, 6 insertions(+)
> What is the plan to identify the root cause?
To be honest, I have no precise plan yet. However I commit to work on it
within the next weeks.

If maintainers prefer to delay the introduction of qtest libqos
pci/aarch64 tests until this gets fixed, I would understand though.

Eric
>
> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>