Re: [PATCH v4 2/2] tests/bios-tables-test: add smbios cpu speed test

[Laszlo Ersek <lersek@redhat.com>]

On 03/19/20 14:30, Igor Mammedov wrote:
> On Wed, 18 Mar 2020 14:48:20 +0800
> Heyi Guo <guoheyi@huawei.com> wrote:
> 
>> Add smbios type 4 CPU speed check for we added new options to set
>> smbios type 4 "max speed" and "current speed". The default value
>> should be 2000 when no option is specified, just as the old version
>> did.
>>
>> We add the test case to one machine of each architecture, though it
>> doesn't really run on aarch64 platform for smbios test can't run on
>> uefi only platform yet.
> I suggest to drop aarch64 part then as it just wastes resources,
> alternatively you can enable smbios tests with UEFI.
> (Not sure if uefi already exposes smbios entry point in test structure,
> CCing Lazslo)

Yes, it does. For aarch64 specifically, please see the field called
"Smbios30" in
"tests/uefi-test-tools/UefiTestToolsPkg/Include/Guid/BiosTablesTest.h".

Please see:
- <https://bugs.launchpad.net/qemu/+bug/1821884>,
- commit b097ba371a68 ("tests/uefi-test-tools: report the SMBIOS entry
point structures", 2019-05-03).

Thanks
Laszlo

> 
>>
>> Signed-off-by: Heyi Guo <guoheyi@huawei.com>
>>
>> ---
>> Cc: "Michael S. Tsirkin" <mst@redhat.com>
>> Cc: Igor Mammedov <imammedo@redhat.com>
>> Cc: Thomas Huth <thuth@redhat.com>
>> Cc: Laurent Vivier <lvivier@redhat.com>
>> Cc: Paolo Bonzini <pbonzini@redhat.com>
>> ---
>>  tests/qtest/bios-tables-test.c | 42 ++++++++++++++++++++++++++++++++++
>>  1 file changed, 42 insertions(+)
>>
>> diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
>> index 0a597bbacf..f2d2e97b4a 100644
>> --- a/tests/qtest/bios-tables-test.c
>> +++ b/tests/qtest/bios-tables-test.c
>> @@ -77,6 +77,8 @@ typedef struct {
>>      GArray *tables;
>>      uint32_t smbios_ep_addr;
>>      struct smbios_21_entry_point smbios_ep_table;
>> +    uint16_t smbios_cpu_max_speed;
>> +    uint16_t smbios_cpu_curr_speed;
>>      uint8_t *required_struct_types;
>>      int required_struct_types_len;
>>      QTestState *qts;
>> @@ -560,6 +562,31 @@ static inline bool smbios_single_instance(uint8_t type)
>>      }
>>  }
>>  
>> +static bool smbios_cpu_test(test_data *data, uint32_t addr)
>> +{
>> +    uint16_t expect_speed[2];
>> +    uint16_t real;
>> +    int offset[2];
>> +    int i;
>> +
>> +    /* Check CPU speed for backward compatibility */
>> +    offset[0] = offsetof(struct smbios_type_4, max_speed);
>> +    offset[1] = offsetof(struct smbios_type_4, current_speed);
>> +    expect_speed[0] = data->smbios_cpu_max_speed ? : 2000;
>> +    expect_speed[1] = data->smbios_cpu_curr_speed ? : 2000;
>> +
>> +    for (i = 0; i < 2; i++) {
>> +        real = qtest_readw(data->qts, addr + offset[i]);
>> +        if (real != expect_speed[i]) {
>> +            fprintf(stderr, "Unexpected SMBIOS CPU speed: real %u expect %u\n",
>> +                    real, expect_speed[i]);
>> +            return false;
>> +        }
>> +    }
>> +
>> +    return true;
>> +}
>> +
>>  static void test_smbios_structs(test_data *data)
>>  {
>>      DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
>> @@ -582,6 +609,10 @@ static void test_smbios_structs(test_data *data)
>>          }
>>          set_bit(type, struct_bitmap);
>>  
>> +        if (type == 4) {
>> +            g_assert(smbios_cpu_test(data, addr));
>> +        }
>> +
>>          /* seek to end of unformatted string area of this struct ("\0\0") */
>>          prv = crt = 1;
>>          while (prv || crt) {
>> @@ -716,6 +747,11 @@ static void test_acpi_q35_tcg(void)
>>      data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
>>      test_acpi_one(NULL, &data);
>>      free_test_data(&data);
>> +
>> +    data.smbios_cpu_max_speed = 3000;
>> +    data.smbios_cpu_curr_speed = 2600;
>> +    test_acpi_one("-smbios type=4,max-speed=3000,current-speed=2600", &data);
>> +    free_test_data(&data);
>>  }
>>  
>>  static void test_acpi_q35_tcg_bridge(void)
>> @@ -1017,6 +1053,12 @@ static void test_acpi_virt_tcg(void)
>>  
>>      test_acpi_one("-cpu cortex-a57", &data);
>>      free_test_data(&data);
>> +
>> +    data.smbios_cpu_max_speed = 2900;
>> +    data.smbios_cpu_curr_speed = 2700;
>> +    test_acpi_one("-cpu cortex-a57 "
>> +                  "-smbios type=4,max-speed=2900,current-speed=2700", &data);
>> +    free_test_data(&data);
>>  }
>>  
>>  int main(int argc, char *argv[])
>