KVM: s390: Add alignment checks for hugepages

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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.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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This commit is contained in:

Claudio Imbrenda 2026-04-02 17:01:31 +02:00

parent 6da4b1a435

commit 4204067f99

3 changed files with 29 additions and 8 deletions

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2

arch/s390/kvm/faultin.c

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32

arch/s390/kvm/gmap.c

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3

arch/s390/kvm/gmap.h

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