[PATCH v5 0/2] kho: add support for deferred struct page init

From: Michal Clapinski

Date: Wed Feb 25 2026 - 10:59:35 EST


When CONFIG_DEFERRED_STRUCT_PAGE_INIT (hereinafter DEFERRED) is
enabled, struct page initialization is deferred to parallel kthreads
that run later in the boot process.

Currently, KHO is incompatible with DEFERRED.
This series fixes that incompatibility.
---
v5:
- rebased
v4:
- added a new commit to fix deferred init of kho scratch
- switched to ulong when refering to pfn
v3:
- changed commit msg
- don't invoke early_pfn_to_nid if CONFIG_DEFERRED_STRUCT_PAGE_INIT=n
v2:
- updated a comment

Evangelos Petrongonas (1):
kho: make preserved pages compatible with deferred struct page init

Michal Clapinski (1):
kho: fix deferred init of kho scratch

include/linux/memblock.h | 2 -
kernel/liveupdate/Kconfig | 2 -
kernel/liveupdate/kexec_handover.c | 70 ++++++++++++++++--------------
mm/memblock.c | 22 ----------
4 files changed, 37 insertions(+), 59 deletions(-)

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2.53.0.414.gf7e9f6c205-goog