linux-kernel - Re: [PATCH 1/4] selftests: sev_migrate

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Date:   Wed, 17 Nov 2021 09:52:38 -0700
From:   Peter Gonda <pgonda@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        seanjc@...gle.com
Subject: Re: [PATCH 1/4] selftests: sev_migrate_tests: free all VMs

I think we are still missing the kvm_vm_free() from
test_sev_migrate_locking(). Should we have this at the end?

for (i = 0; i < NR_LOCK_TESTING_THREADS; ++i)
    kvm_vm_free(input[i].vm);


On Wed, Nov 17, 2021 at 9:38 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> Ensure that the ASID are freed promptly, which becomes more important
> when more tests are added to this file.
>
> Cc: Peter Gonda <pgonda@...gle.com>
> Cc: Sean Christopherson <seanjc@...gle.com>
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
>  tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> 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 5ba325cd64bf..4a5d3728412b 100644
> --- a/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> +++ b/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> @@ -162,7 +162,6 @@ static void test_sev_migrate_parameters(void)
>         sev_ioctl(sev_es_vm_no_vmsa->fd, KVM_SEV_ES_INIT, NULL);
>         vm_vcpu_add(sev_es_vm_no_vmsa, 1);
>
> -
>         ret = __sev_migrate_from(sev_vm->fd, sev_es_vm->fd);
>         TEST_ASSERT(
>                 ret == -1 && errno == EINVAL,
> @@ -191,6 +190,12 @@ static void test_sev_migrate_parameters(void)
>         TEST_ASSERT(ret == -1 && errno == EINVAL,
>                     "Migrations require SEV enabled. ret %d, errno: %d\n", ret,
>                     errno);
> +
> +       kvm_vm_free(sev_vm);
> +       kvm_vm_free(sev_es_vm);
> +       kvm_vm_free(sev_es_vm_no_vmsa);
> +       kvm_vm_free(vm_no_vcpu);
> +       kvm_vm_free(vm_no_sev);
>  }
>
>  int main(int argc, char *argv[])
> --
> 2.27.0
>
>