Re: [kvm-unit-tests PATCH 4/5] s390x: smp: Allocate memory in DMA31 space

Nico Boehr
2022-01-14T12:51:00Z

On Fri, 2022-01-14 at 10:02 +0000, Janosch Frank wrote:
> The store status at address order works with 31 bit addresses so
> let's
> use them.
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> ---
>  s390x/smp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/s390x/smp.c b/s390x/smp.c
> index 32f128b3..c91f170b 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c

[...]

> @@ -244,7 +244,7 @@ static void test_func_initial(void)
>
>  static void test_reset_initial(void)
>  {
> -       struct cpu_status *status = alloc_pages(0);
> +       struct cpu_status *status = alloc_pages_flags(1, AREA_DMA31);

Why do we need two pages now?