On Tue, 22 Feb 2022 14:54:55 +0000
Steffen Eiden <seiden@xxxxxxxxxxxxx> wrote:
> The UV facility bits shared/unshared must both be set or none.
>
> Signed-off-by: Steffen Eiden <seiden@xxxxxxxxxxxxx>
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> ---
> s390x/uv-guest.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/s390x/uv-guest.c b/s390x/uv-guest.c
> index 728c60aa..77057bd2 100644
> --- a/s390x/uv-guest.c
> +++ b/s390x/uv-guest.c
> @@ -159,6 +159,14 @@ static void test_invalid(void)
> report_prefix_pop();
> }
>
> +static void test_share_bits(void)
> +{
> + bool unshare = uv_query_test_call(BIT_UVC_CMD_REMOVE_SHARED_ACCESS);
> + bool share = uv_query_test_call(BIT_UVC_CMD_SET_SHARED_ACCESS);
> +
> + report(!(share ^ unshare), "share bits");
> +}
> +
> int main(void)
> {
> bool has_uvc = test_facility(158);
> @@ -169,6 +177,12 @@ int main(void)
> goto done;
> }
>
> + /*
> + * Needs to be done before the guest-fence,
> + * as the fence tests if both shared bits are present
> + */
> + test_share_bits();
> +
> if (!uv_os_is_guest()) {
> report_skip("Not a protected guest");
> goto done;
