Re: [PATCH 15/16] tests: bios-tables-test: Add test for smbios type4 thread count2

[Zhao Liu]

Hi Igor,

On Fri, Sep 15, 2023 at 03:29:07PM +0200, Igor Mammedov wrote:
> Date: Fri, 15 Sep 2023 15:29:07 +0200
> From: Igor Mammedov <imammedo@redhat.com>
> Subject: Re: [PATCH 15/16] tests: bios-tables-test: Add test for smbios
>  type4 thread count2
> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; x86_64-redhat-linux-gnu)
> 
> On Fri, 25 Aug 2023 11:36:18 +0800
> Zhao Liu <zhao1.liu@linux.intel.com> wrote:
> 
> > From: Zhao Liu <zhao1.liu@intel.com>
> > 
> > This tests the commit 7298fd7de5551 ("hw/smbios: Fix thread count in
> > type4").
> > 
> > Add this test to cover 2 cases:
> > 1. Test thread count2 field with multiple sockets and multiple dies to
> >    confirm this field could correctly calculate threads per sockets.
> > 
> > 2. Confirm that field calculation could correctly recognize the
> >    difference between "-smp maxcpus" and "-smp cpus".
> > 
> > Suggested-by: Igor Mammedov <imammedo@redhat.com>
> > Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
> > ---
> >  tests/qtest/bios-tables-test.c | 33 +++++++++++++++++++++++++++++++++
> >  1 file changed, 33 insertions(+)
> > 
> > diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
> > index 26474d376633..1b0c27e95d26 100644
> > --- a/tests/qtest/bios-tables-test.c
> > +++ b/tests/qtest/bios-tables-test.c
> > @@ -96,6 +96,7 @@ typedef struct {
> >      uint8_t smbios_core_count;
> >      uint16_t smbios_core_count2;
> >      uint8_t smbios_thread_count;
> > +    uint16_t smbios_thread_count2;
> >      uint8_t *required_struct_types;
> >      int required_struct_types_len;
> >      int type4_count;
> > @@ -644,6 +645,7 @@ static void smbios_cpu_test(test_data *data, uint32_t 
> > addr,
> >      uint8_t thread_count, expected_thread_count = 
> > data->smbios_thread_count;
> >      uint16_t speed, expected_speed[2];
> >      uint16_t core_count2, expected_core_count2 = data->smbios_core_count2;
> > +    uint16_t thread_count2, expected_thread_count2 = 
> > data->smbios_thread_count2;
> >      int offset[2];
> >      int i;
> >  
> > @@ -673,6 +675,8 @@ static void smbios_cpu_test(test_data *data, uint32_t 
> > addr,
> >      }
> >  
> >      if (ep_type == SMBIOS_ENTRY_POINT_TYPE_64) {
> > +        uint64_t thread_count2_addr;
> > +
> >          core_count2 = qtest_readw(data->qts,
> >                            addr + offsetof(struct smbios_type_4, 
> > core_count2));
> >  
> > @@ -680,6 +684,15 @@ static void smbios_cpu_test(test_data *data, uint32_t 
> > addr,
> >          if (expected_core_count == 0xFF && expected_core_count2) {
> >              g_assert_cmpuint(core_count2, ==, expected_core_count2);
> >          }
> > +
> > +        thread_count2_addr = addr +
> > +                             offsetof(struct smbios_type_4, thread_count2);
> > +        thread_count2 = qtest_readw(data->qts, thread_count2_addr);
> 
> I'd mimic the same code style as used for core_count2 and avoid introducing 
> an extra variable

I'm not sure about the style of this case, since the code line is still
too long, so which style should I pick? ;-)

thread_count2 = qtest_readw(data->qts,
                    addr + offsetof(struct smbios_type_4,
                                    thread_count2));

or,

thread_count2 = qtest_readw(data->qts,
                    addr + offsetof(struct smbios_type_4,
                    thread_count2));


> 
> > +
> > +        /* Thread Count has reached its limit, checking Thread Count 2 */
> > +        if (expected_thread_count == 0xFF && expected_thread_count2) {
> > +            g_assert_cmpuint(thread_count2, ==, expected_thread_count2);
> > +        }
> >      }
> >  }
> >  
> > @@ -1050,6 +1063,7 @@ static void test_acpi_q35_tcg_thread_count(void)
> >          .required_struct_types = base_required_struct_types,
> >          .required_struct_types_len = 
> > ARRAY_SIZE(base_required_struct_types),
> >          .smbios_thread_count = 27,
> > +        .smbios_thread_count2 = 27,
> >      };
> >  
> >      test_acpi_one("-machine smbios-entry-point-type=64 "
> > @@ -1058,6 +1072,23 @@ static void test_acpi_q35_tcg_thread_count(void)
> >      free_test_data(&data);
> >  }
> >  
> > +static void test_acpi_q35_tcg_thread_count2(void)
> > +{
> > +    test_data data = {
> > +        .machine = MACHINE_Q35,
> > +        .variant = ".thread-count2",
> > +        .required_struct_types = base_required_struct_types,
> > +        .required_struct_types_len = 
> > ARRAY_SIZE(base_required_struct_types),
> > +        .smbios_thread_count = 0xFF,
> > +        .smbios_thread_count2 = 260,
> > +    };
> > +
> > +    test_acpi_one("-machine smbios-entry-point-type=64 "
> > +                  "-smp 
> > cpus=210,maxcpus=520,sockets=2,dies=2,cores=65,threads=2",
> > +                  &data);
> 
> explain in commit message why abive -smp == 

Ok, this is used to test if we could correctly distinguish smp.cpus and 
smp.maxcpus.

Thanks,
Zhao

>   > +        .smbios_thread_count = 0xFF,
>   > +        .smbios_thread_count2 = 260,
> 
> 
> > +    free_test_data(&data);
> > +}
> > +
> >  static void test_acpi_q35_tcg_bridge(void)
> >  {
> >      test_data data = {};
> > @@ -2216,6 +2247,8 @@ int main(int argc, char *argv[])
> >                                 test_acpi_q35_tcg_core_count2);
> >                  qtest_add_func("acpi/q35/thread-count",
> >                                 test_acpi_q35_tcg_thread_count);
> > +                qtest_add_func("acpi/q35/thread-count2",
> > +                               test_acpi_q35_tcg_thread_count2);
> >              }
> >              qtest_add_func("acpi/q35/viot", test_acpi_q35_viot);
> >  #ifdef CONFIG_POSIX
>