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Re: [Qemu-arm] [Qemu-devel] [RFC PATCH] tests/device-introspect: Test de


From: Markus Armbruster
Subject: Re: [Qemu-arm] [Qemu-devel] [RFC PATCH] tests/device-introspect: Test devices with all machines, not only with "none"
Date: Fri, 27 Apr 2018 10:05:19 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

Thomas Huth <address@hidden> writes:

> On 27.04.2018 08:31, Markus Armbruster wrote:
>> Eduardo Habkost <address@hidden> writes:
>> 
>>> On Thu, Apr 26, 2018 at 05:20:25PM +0200, Thomas Huth wrote:
>>>> On 26.04.2018 13:45, Markus Armbruster wrote:
>>>>> Thomas Huth <address@hidden> writes:
>>>> [...]
>>>>>> @@ -260,6 +263,26 @@ static void test_abstract_interfaces(void)
>>>>>>      qtest_end();
>>>>>>  }
>>>>>>  
>>>>>> +static void add_machine_test_case(const char *mname)
>>>>>> +{
>>>>>> +    char *path, *args;
>>>>>> +
>>>>>> +    /* Ignore blacklisted machines */
>>>>>> +    if (g_str_equal("xenfv", mname) || g_str_equal("xenpv", mname)) {
>>>>>> +        return;
>>>>>> +    }
>>>>>> +
>>>>>> +    path = g_strdup_printf("device/introspect/concrete-defaults-%s", 
>>>>>> mname);
>>>>>> +    args = g_strdup_printf("-machine %s", mname);
>>>>>> +    qtest_add_data_func(path, args, test_device_intro_concrete);
>>>>>
>>>>> This runs test_device_intro_concrete() with "-machine M" for all machine
>>>>> types M, in SPEED=slow mode.
>>>>>
>>>>>> +    g_free(path);
>>>>>> +
>>>>>> +    path = g_strdup_printf("device/introspect/concrete-nodefaults-%s", 
>>>>>> mname);
>>>>>> +    args = g_strdup_printf("-nodefaults -machine %s", mname);
>>>>>> +    qtest_add_data_func(path, args, test_device_intro_concrete);
>>>>>
>>>>> This runs test_device_intro_concrete() with "-nodefaults -machine M" for
>>>>> all machine types M, in SPEED=slow mode.
>>>>>
>>>>> Has "without -nodefaults" exposed additional bugs?
>>>>
>>>> After testing this with all machines, I had to discover that
>>>> "-nodefaults" does not work so easily: A lot of the embedded machines
>>>> (especially the ARM machines) simply refuse to work with "-nodefaults"
>>>> and exit immediately instead. E.g.:
>>>>
>>>> $ arm-softmmu/qemu-system-arm -nodefaults -nographic -M n810,accel=qtest
>>>> qemu-system-arm: missing SecureDigital device
>> 
>> These are all bugs.  --nodefaults is supposed to suppress *optional*
>> devices, not mandatory ones.
>
> Even if we fix all the issues, there is still another cosmetic problem:
> Since there are no entries in nd_table[], all the boards with embedded
> NICs start to spill out "warning: nic XYZ has no peer". Should we simply
> suppress that warning in qtest mode?

Makes sense to me.



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