Re: [PATCH v10 07/11] tests/qtest: Fix tests when no KVM or TCG are present

[Igor Mammedov <imammedo@redhat.com>]

On Wed, 12 Apr 2023 09:18:25 -0300
Fabiano Rosas <farosas@suse.de> wrote:

> It is possible to have a build with both TCG and KVM disabled due to
> Xen requiring the i386 and x86_64 binaries to be present in an aarch64
> host.
> 
> If we build with --disable-tcg on the aarch64 host, we will end-up
> with a QEMU binary (x86) that does not support TCG nor KVM.
> 
> Skip tests that crash or hang in the above scenario. Do not include
> any test cases if TCG and KVM are missing.
> 
> Make sure that calls to qtest_has_accel are placed after g_test_init
> in similar fashion to commit ae4b01b349 ("tests: Ensure TAP version is
> printed before other messages") to avoid TAP parsing errors.
> 
> Signed-off-by: Fabiano Rosas <farosas@suse.de>
> Reviewed-by: Juan Quintela <quintela@redhat.com>
> ---
>  tests/qtest/bios-tables-test.c | 11 +++++++++--
>  tests/qtest/boot-serial-test.c |  5 +++++
>  tests/qtest/migration-test.c   |  9 ++++++++-
>  tests/qtest/pxe-test.c         |  8 +++++++-
>  tests/qtest/vmgenid-test.c     |  9 +++++++--
>  5 files changed, 36 insertions(+), 6 deletions(-)
> 
> diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
> index 8733589437..9c3642717d 100644
> --- a/tests/qtest/bios-tables-test.c
> +++ b/tests/qtest/bios-tables-test.c
> @@ -2082,8 +2082,7 @@ static void test_acpi_virt_oem_fields(void)
>  int main(int argc, char *argv[])
>  {
>      const char *arch = qtest_get_arch();
> -    const bool has_kvm = qtest_has_accel("kvm");
> -    const bool has_tcg = qtest_has_accel("tcg");
> +    bool has_kvm, has_tcg;
>      char *v_env = getenv("V");
>      int ret;
>  
> @@ -2093,6 +2092,14 @@ int main(int argc, char *argv[])
>  
>      g_test_init(&argc, &argv, NULL);
>  
> +    has_kvm = qtest_has_accel("kvm");
> +    has_tcg = qtest_has_accel("tcg");
> +
> +    if (!has_tcg && !has_kvm) {
> +        g_test_skip("No accelerator available");

perhaps 'No KVM or TCG ...' would be a bit better

> +        return 0;
> +    }
> +
>      if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
>          ret = boot_sector_init(disk);
>          if (ret) {
> diff --git a/tests/qtest/boot-serial-test.c b/tests/qtest/boot-serial-test.c
> index 3aef3a97a9..28bab3d5e4 100644
> --- a/tests/qtest/boot-serial-test.c
> +++ b/tests/qtest/boot-serial-test.c
> @@ -287,6 +287,11 @@ int main(int argc, char *argv[])
>  
>      g_test_init(&argc, &argv, NULL);
>  
> +    if (!qtest_has_accel("tcg") && !qtest_has_accel("kvm")) {
> +        g_test_skip("No accelerator available");
> +        return 0;
> +    }
> +
>      for (i = 0; tests[i].arch != NULL; i++) {
>          if (g_str_equal(arch, tests[i].arch) &&
>              qtest_has_machine(tests[i].machine)) {
> diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
> index 3b615b0da9..24deb2d432 100644
> --- a/tests/qtest/migration-test.c
> +++ b/tests/qtest/migration-test.c
> @@ -2462,7 +2462,7 @@ static bool kvm_dirty_ring_supported(void)
>  
>  int main(int argc, char **argv)
>  {
> -    bool has_kvm;
> +    bool has_kvm, has_tcg;
>      bool has_uffd;
>      const char *arch;
>      g_autoptr(GError) err = NULL;
> @@ -2471,6 +2471,13 @@ int main(int argc, char **argv)
>      g_test_init(&argc, &argv, NULL);
>  
>      has_kvm = qtest_has_accel("kvm");
> +    has_tcg = qtest_has_accel("tcg");
> +
> +    if (!has_tcg && !has_kvm) {
> +        g_test_skip("No accelerator available");
> +        return 0;
> +    }
> +
>      has_uffd = ufd_version_check();
>      arch = qtest_get_arch();
>  
> diff --git a/tests/qtest/pxe-test.c b/tests/qtest/pxe-test.c
> index 62b6eef464..5813adcf56 100644
> --- a/tests/qtest/pxe-test.c
> +++ b/tests/qtest/pxe-test.c
> @@ -131,11 +131,17 @@ int main(int argc, char *argv[])
>      int ret;
>      const char *arch = qtest_get_arch();
>  
> +    g_test_init(&argc, &argv, NULL);
> +
> +    if (!qtest_has_accel("tcg") && !qtest_has_accel("kvm")) {
> +        g_test_skip("No accelerator available");
> +        return 0;
> +    }
> +
>      ret = boot_sector_init(disk);
>      if(ret)
>          return ret;
>  
> -    g_test_init(&argc, &argv, NULL);
>  
>      if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
>          test_batch(x86_tests, false);
> diff --git a/tests/qtest/vmgenid-test.c b/tests/qtest/vmgenid-test.c
> index efba76e716..a597cde707 100644
> --- a/tests/qtest/vmgenid-test.c
> +++ b/tests/qtest/vmgenid-test.c
> @@ -165,13 +165,18 @@ int main(int argc, char **argv)
>  {
>      int ret;
>  
> +    g_test_init(&argc, &argv, NULL);
> +
> +    if (!qtest_has_accel("tcg") && !qtest_has_accel("kvm")) {
> +        g_test_skip("No accelerator available");
> +        return 0;
> +    }
> +
>      ret = boot_sector_init(disk);
>      if (ret) {
>          return ret;
>      }
>  
> -    g_test_init(&argc, &argv, NULL);
> -
>      qtest_add_func("/vmgenid/vmgenid/set-guid",
>                     vmgenid_set_guid_test);
>      qtest_add_func("/vmgenid/vmgenid/set-guid-auto",