[RFC PATCH v2 1/2] kho: Introduce a helper to init unsplit pages

[Samiullah Khawaja]

On Mon, Jul 13, 2026 at 08:49:34PM +0000, Pranjal Shrivastava wrote:
>The current KHO restoration logic assumes all multi-page blocks are
>split into independent 4KB pages. Break out a helper to prepare for
>supporting high-order non-compound pages.
>
>Extract kho_init_unsplit_pages() to handle the refcount pattern
>where only the head page is refcounted. Use the helper for folio
>restoration that requires a similar refcount logic.
>
>Signed-off-by: Pranjal Shrivastava <praan at google.com>
>---
> kernel/liveupdate/kexec_handover.c | 29 +++++++++++++++++++----------
> 1 file changed, 19 insertions(+), 10 deletions(-)
>

Reviewed-by: Samiullah Khawaja <skhawaja at google.com>