Re: [kvm-unit-tests PATCH 8/8] lib: s390x: uv: Add rc 0x100 query error handling

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

On Fri, 13 Aug 2021 07:36:15 +0000
Janosch Frank <frankja@linux.ibm.com> wrote:

> Let's not get bitten by an extension of the query struct and handle
> the rc 0x100 error properly which does indicate that the UV has more
> data for us.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

> ---
>  lib/s390x/uv.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/s390x/uv.c b/lib/s390x/uv.c
> index fd9de944..c5c69c47 100644
> --- a/lib/s390x/uv.c
> +++ b/lib/s390x/uv.c
> @@ -49,6 +49,8 @@ int uv_setup(void)
>  	if (!test_facility(158))
>  		return 0;
>  
> -	assert(!uv_call(0, (u64)&uvcb_qui));
> +	uv_call(0, (u64)&uvcb_qui);
> +
> +	assert(uvcb_qui.header.rc == 1 || uvcb_qui.header.rc ==
> 0x100); return 1;
>  }