linux-kernel - Re: [PATCH 2/3] selftests: sev_migrate_tests: Fix sev

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Date:   Wed, 8 Dec 2021 21:45:09 -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 2/3] selftests: sev_migrate_tests: Fix sev_ioctl()

On Wed, Dec 8, 2021 at 11:16 AM Peter Gonda <pgonda@...gle.com> wrote:
>
> TEST_ASSERT in SEV ioctl was allowing errors because it checked return
> value was good OR the FW error code was OK. This TEST_ASSERT should
> require both (aka. AND) values are OK. Removes the LAUNCH_START from the
> mirror VM because this call correctly fails because mirror VMs cannot
> call this command. Currently issues with the PSP driver functions mean

This commit description is now stale. The previous patch removes the
LAUNCH_START -- not this patch.

> the firmware error is not always reset to SEV_RET_SUCCESS when a call is
> successful. Mainly sev_platform_init() doesn't correctly set the fw
> error if the platform has already been initialized.
>
> 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 | 3 ++-
>  1 file changed, 2 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 fbc742b42145..4bb960ca6486 100644
> --- a/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> +++ b/tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
> @@ -30,8 +30,9 @@ static void sev_ioctl(int vm_fd, int cmd_id, void *data)
>         };
>         int ret;
>
> +

nit: Looks like you picked up an extra new line. Since you need to
fixup the commit description, let's fix this up too.

>         ret = ioctl(vm_fd, KVM_MEMORY_ENCRYPT_OP, &cmd);
> -       TEST_ASSERT((ret == 0 || cmd.error == SEV_RET_SUCCESS),
> +       TEST_ASSERT(ret == 0 && cmd.error == SEV_RET_SUCCESS,
>                     "%d failed: return code: %d, errno: %d, fw error: %d",
>                     cmd_id, ret, errno, cmd.error);
>  }
> --
> 2.34.1.400.ga245620fadb-goog
>