Re: [PATCH v3 2/4] KVM: s390: vsie: Fix length of facility list shadowed

[Heiko Carstens]

On Wed, Nov 08, 2023 at 06:12:27PM +0100, Nina Schoetterl-Glausch wrote:
> The length of the facility list accessed when interpretively executing
> STFLE is the same as the hosts facility list (in case of format-0)
> When shadowing, copy only those bytes.
> The memory following the facility list need not be accessible, in which
> case we'd wrongly inject a validity intercept.
> 
> Acked-by: David Hildenbrand <david@xxxxxxxxxx>
> Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> Signed-off-by: Nina Schoetterl-Glausch <nsg@xxxxxxxxxxxxx>
> ---
>  arch/s390/include/asm/facility.h |  6 ++++++
>  arch/s390/kernel/Makefile        |  2 +-
>  arch/s390/kernel/facility.c      | 21 +++++++++++++++++++++
>  arch/s390/kvm/vsie.c             | 12 +++++++++++-
>  4 files changed, 39 insertions(+), 2 deletions(-)
>  create mode 100644 arch/s390/kernel/facility.c

For the non-KVM part:
Acked-by: Heiko Carstens <hca@xxxxxxxxxxxxx>