Re: [kvm-unit-tests PATCH v3 4/5] s390x: uv-guest: add share bit test

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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;




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