Re: [PATCH v3 07/10] tests/acpi: add test cases for VIOT

[Igor Mammedov]

On Tue, 14 Sep 2021 15:20:02 +0100
Jean-Philippe Brucker <jean-philippe@linaro.org> wrote:

> Add two test cases for VIOT, one on the q35 machine and the other on
> virt. To test complex topologies the q35 test has two PCIe buses that
> bypass the IOMMU (and are therefore not described by VIOT), and two
> buses that are translated by virtio-iommu.
> 
> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> ---
>  tests/qtest/bios-tables-test.c | 39 ++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
> index 4f11d03055..f8bfe2f247 100644
> --- a/tests/qtest/bios-tables-test.c
> +++ b/tests/qtest/bios-tables-test.c
> @@ -1403,6 +1403,43 @@ static void test_acpi_virt_tcg(void)
>      free_test_data(&data);
>  }
>  
> +static void test_acpi_q35_viot(void)
> +{
> +    test_data data = {
> +        .machine = MACHINE_Q35,
> +        .variant = ".viot",

> +        .blkdev = "virtio-blk,bus=pcie.0",
why is this necessary?

> +    };
> +
> +    /*
> +     * To keep things interesting, two buses bypass the IOMMU.
> +     * VIOT should only describes the other two buses.
> +     */
> +    test_acpi_one("-machine default_bus_bypass_iommu=on "
> +                  "-device virtio-iommu "
> +                  "-device pxb-pcie,bus_nr=0x10,id=pcie.100,bus=pcie.0 "
> +                  "-device 
> pxb-pcie,bus_nr=0x20,id=pcie.200,bus=pcie.0,bypass_iommu=on "
> +                  "-device pxb-pcie,bus_nr=0x30,id=pcie.300,bus=pcie.0",
> +                  &data);
> +    free_test_data(&data);
> +}
> +
> +static void test_acpi_virt_viot(void)
> +{
> +    test_data data = {
> +        .machine = "virt",
> +        .uefi_fl1 = "pc-bios/edk2-aarch64-code.fd",
> +        .uefi_fl2 = "pc-bios/edk2-arm-vars.fd",
> +        .cd = 
> "tests/data/uefi-boot-images/bios-tables-test.aarch64.iso.qcow2",
> +        .ram_start = 0x40000000ULL,
> +        .scan_len = 128ULL * 1024 * 1024,
> +    };
> +
> +    test_acpi_one("-cpu cortex-a57 "
> +                  "-device virtio-iommu", &data);
> +    free_test_data(&data);
> +}
> +
>  static void test_oem_fields(test_data *data)
>  {
>      int i;
> @@ -1567,12 +1604,14 @@ int main(int argc, char *argv[])
>          if (strcmp(arch, "x86_64") == 0) {
>              qtest_add_func("acpi/microvm/pcie", test_acpi_microvm_pcie_tcg);
>          }
> +        qtest_add_func("acpi/q35/viot", test_acpi_q35_viot);
>      } else if (strcmp(arch, "aarch64") == 0) {
>          qtest_add_func("acpi/virt", test_acpi_virt_tcg);
>          qtest_add_func("acpi/virt/numamem", test_acpi_virt_tcg_numamem);
>          qtest_add_func("acpi/virt/memhp", test_acpi_virt_tcg_memhp);
>          qtest_add_func("acpi/virt/pxb", test_acpi_virt_tcg_pxb);
>          qtest_add_func("acpi/virt/oem-fields", test_acpi_oem_fields_virt);
> +        qtest_add_func("acpi/virt/viot", test_acpi_virt_viot);
>      }
>      ret = g_test_run();
>      boot_sector_cleanup(disk);