linux-kernel - Re: [PATCH 1/3] selftests: sev_migrate_tests: Fix test_sev

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Message-ID: <CAA03e5EePeCmasD211f0UVz45S3CUXNWyd+S=Wps6G=5SX0JJw@mail.gmail.com>
Date:   Wed, 8 Dec 2021 21:43:23 -0800
From:   Marc Orr <marcorr@...gle.com>
To:     Peter Gonda <pgonda@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>
Subject: Re: [PATCH 1/3] selftests: sev_migrate_tests: Fix test_sev_mirror()

On Wed, Dec 8, 2021 at 11:16 AM Peter Gonda <pgonda@...gle.com> wrote:
>
> Mirrors should not be able to call LAUNCH_START. Remove the call on the
> mirror to correct the test before fixing sev_ioctl() to correctly assert
> on this failed ioctl.
>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: Sean Christopherson <seanjc@...gle.com>
> Cc: Marc Orr <marcorr@...gle.com>
> Signed-off-by: Peter Gonda <pgonda@...gle.com>
> ---
>  tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c b/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> index 29b18d565cf4..fbc742b42145 100644
> --- a/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> +++ b/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> @@ -228,9 +228,6 @@ static void sev_mirror_create(int dst_fd, int src_fd)
>  static void test_sev_mirror(bool es)
>  {
>         struct kvm_vm *src_vm, *dst_vm;
> -       struct kvm_sev_launch_start start = {
> -               .policy = es ? SEV_POLICY_ES : 0
> -       };
>         int i;
>
>         src_vm = sev_vm_create(es);
> @@ -241,7 +238,7 @@ static void test_sev_mirror(bool es)
>         /* Check that we can complete creation of the mirror VM.  */
>         for (i = 0; i < NR_MIGRATE_TEST_VCPUS; ++i)
>                 vm_vcpu_add(dst_vm, i);
> -       sev_ioctl(dst_vm->fd, KVM_SEV_LAUNCH_START, &start);
> +
>         if (es)
>                 sev_ioctl(dst_vm->fd, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
>
> --
> 2.34.1.400.ga245620fadb-goog
>

Reviewed-by: Marc Orr <marcorr@...gle.com>