Re: [PATCH v3 2/6] KVM: s390: Add alignment checks for hugepages

[Christoph Schlameuss]

On Thu Apr 2, 2026 at 5:01 PM CEST, Claudio Imbrenda wrote:
> When backing a guest page with a large page, check that the alignment
> of the guest page matches the alignment of the host physical page
> backing it within the large page.
>
> Also check that the memslot is large enough to fit the large page.
>
> Those checks are currently not needed, because memslots are guaranteed
> to be 1m-aligned, but this will change.
>
> Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

Reviewed-by: Christoph Schlameuss <schlameuss@xxxxxxxxxxxxx>

> ---
>  arch/s390/kvm/faultin.c |  2 +-
>  arch/s390/kvm/gmap.c    | 32 ++++++++++++++++++++++++++------
>  arch/s390/kvm/gmap.h    |  3 ++-
>  3 files changed, 29 insertions(+), 8 deletions(-)