Re: [Qemu-devel] [PATCH] tests/acpi: speedup acpi tests

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Sep 06, 2016 at 05:55:50PM +0300, Marcel Apfelbaum wrote:
> Use kvm acceleration if available.
> 
> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
> ---
> 
> Hi,
> 
> It saves a few seconds so we'll be able to add more tests.
> I cc-ed Paolo to get his opinion on the correct way to look
> for the kvm support.
> 
> Thanks,
> Marcel
> 
>  tests/bios-tables-test.c | 51 +++++++++++++++++++++++++++++++-----------------
>  1 file changed, 33 insertions(+), 18 deletions(-)
> 
> diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
> index de4019e..c10b356 100644
> --- a/tests/bios-tables-test.c
> +++ b/tests/bios-tables-test.c
> @@ -114,6 +114,7 @@ typedef struct {
>  
>  static const char *disk = "tests/acpi-test-disk.raw";
>  static const char *data_dir = "tests/acpi-test-data";
> +static bool kvm_enabled;
>  #ifdef CONFIG_IASL
>  static const char *iasl = stringify(CONFIG_IASL);
>  #else
> @@ -707,13 +708,15 @@ static void test_smbios_structs(test_data *data)
>      }
>  }
>  
> -static void test_acpi_one(const char *params, test_data *data)
> +static void test_acpi_one(const char *machine, const char *params,
> +                          test_data *data)
>  {
>      char *args;
>  
> -    args = g_strdup_printf("-net none -display none %s "
> +    args = g_strdup_printf("-machine %s,accel=%s -net none -display none %s "
>                             "-drive id=hd0,if=none,file=%s,format=raw "
>                             "-device ide-hd,drive=hd0 ",
> +                           machine, kvm_enabled ? "kvm" : "tcg",
>                             params ? params : "", disk);
>  
>      qtest_start(args);
> @@ -758,7 +761,7 @@ static void test_acpi_piix4_tcg(void)
>      data.machine = MACHINE_PC;
>      data.required_struct_types = base_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
> -    test_acpi_one("-machine accel=tcg", &data);
> +    test_acpi_one("pc", NULL, &data);
>      free_test_data(&data);
>  }
>  
> @@ -771,7 +774,7 @@ static void test_acpi_piix4_tcg_bridge(void)
>      data.variant = ".bridge";
>      data.required_struct_types = base_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
> -    test_acpi_one("-machine accel=tcg -device pci-bridge,chassis_nr=1", &data);
> +    test_acpi_one("pc", "-device pci-bridge,chassis_nr=1", &data);
>      free_test_data(&data);
>  }
>  
> @@ -783,7 +786,7 @@ static void test_acpi_q35_tcg(void)
>      data.machine = MACHINE_Q35;
>      data.required_struct_types = base_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
> -    test_acpi_one("-machine q35,accel=tcg", &data);
> +    test_acpi_one("q35", NULL, &data);
>      free_test_data(&data);
>  }
>  
> @@ -796,7 +799,7 @@ static void test_acpi_q35_tcg_bridge(void)
>      data.variant = ".bridge";
>      data.required_struct_types = base_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
> -    test_acpi_one("-machine q35,accel=tcg -device pci-bridge,chassis_nr=1",
> +    test_acpi_one("q35", "-device pci-bridge,chassis_nr=1",
>                    &data);
>      free_test_data(&data);
>  }
> @@ -808,7 +811,7 @@ static void test_acpi_piix4_tcg_cphp(void)
>      memset(&data, 0, sizeof(data));
>      data.machine = MACHINE_PC;
>      data.variant = ".cphp";
> -    test_acpi_one("-machine accel=tcg"
> +    test_acpi_one("pc",
>                    " -smp 2,cores=3,sockets=2,maxcpus=6",
>                    &data);
>      free_test_data(&data);
> @@ -821,7 +824,7 @@ static void test_acpi_q35_tcg_cphp(void)
>      memset(&data, 0, sizeof(data));
>      data.machine = MACHINE_Q35;
>      data.variant = ".cphp";
> -    test_acpi_one("-machine q35,accel=tcg"
> +    test_acpi_one("q35",
>                    " -smp 2,cores=3,sockets=2,maxcpus=6",
>                    &data);
>      free_test_data(&data);
> @@ -840,7 +843,7 @@ static void test_acpi_q35_tcg_ipmi(void)
>      data.variant = ".ipmibt";
>      data.required_struct_types = ipmi_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(ipmi_required_struct_types);
> -    test_acpi_one("-machine q35,accel=tcg -device ipmi-bmc-sim,id=bmc0"
> +    test_acpi_one("q35", "-device ipmi-bmc-sim,id=bmc0"
>                    " -device isa-ipmi-bt,bmc=bmc0",
>                    &data);
>      free_test_data(&data);
> @@ -858,12 +861,22 @@ static void test_acpi_piix4_tcg_ipmi(void)
>      data.variant = ".ipmikcs";
>      data.required_struct_types = ipmi_required_struct_types;
>      data.required_struct_types_len = ARRAY_SIZE(ipmi_required_struct_types);
> -    test_acpi_one("-machine accel=tcg -device ipmi-bmc-sim,id=bmc0"
> +    test_acpi_one("pc", "-device ipmi-bmc-sim,id=bmc0"
>                    " -device isa-ipmi-kcs,irq=0,bmc=bmc0",
>                    &data);
>      free_test_data(&data);
>  }
>  
> +static void check_kvm(void)
> +{
> +    int fd = qemu_open("/dev/kvm", O_RDWR);
> +
> +    if (fd > 0) {
> +        kvm_enabled = true;
> +        qemu_close(fd);
> +    }
> +}
> +
>  int main(int argc, char *argv[])
>  {
>      const char *arch = qtest_get_arch();
> @@ -873,17 +886,19 @@ int main(int argc, char *argv[])
>      if(ret)
>          return ret;
>  
> +    check_kvm();
> +
>      g_test_init(&argc, &argv, NULL);
>  
>      if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
> -        qtest_add_func("acpi/piix4/tcg", test_acpi_piix4_tcg);
> -        qtest_add_func("acpi/piix4/tcg/bridge", test_acpi_piix4_tcg_bridge);
> -        qtest_add_func("acpi/q35/tcg", test_acpi_q35_tcg);
> -        qtest_add_func("acpi/q35/tcg/bridge", test_acpi_q35_tcg_bridge);
> -        qtest_add_func("acpi/piix4/tcg/ipmi", test_acpi_piix4_tcg_ipmi);
> -        qtest_add_func("acpi/q35/tcg/ipmi", test_acpi_q35_tcg_ipmi);
> -        qtest_add_func("acpi/piix4/tcg/cpuhp", test_acpi_piix4_tcg_cphp);
> -        qtest_add_func("acpi/q35/tcg/cpuhp", test_acpi_q35_tcg_cphp);
> +        qtest_add_func("acpi/piix4", test_acpi_piix4_tcg);
> +        qtest_add_func("acpi/piix4/bridge", test_acpi_piix4_tcg_bridge);
> +        qtest_add_func("acpi/q35", test_acpi_q35_tcg);
> +        qtest_add_func("acpi/q35/bridge", test_acpi_q35_tcg_bridge);
> +        qtest_add_func("acpi/piix4/ipmi", test_acpi_piix4_tcg_ipmi);
> +        qtest_add_func("acpi/q35/ipmi", test_acpi_q35_tcg_ipmi);
> +        qtest_add_func("acpi/piix4/cpuhp", test_acpi_piix4_tcg_cphp);
> +        qtest_add_func("acpi/q35/cpuhp", test_acpi_q35_tcg_cphp);
>      }
>      ret = g_test_run();
>      boot_sector_cleanup(disk);

I think you need to check kvm_allows_irq0_override though.

> -- 
> 2.5.5