From 4513fea02a860a07fdfea41108482dfaa33a00c7 Mon Sep 17 00:00:00 2001 From: "Pratyush Yadav (Google)" Date: Sat, 1 Aug 2026 10:48:23 +0200 Subject: kho: initialize kho_scratch pointer earlier in boot In a future patch, mm init will use kho_scratch_overlap() for deciding the migrate type of pageblocks it initializes. The earliest user currently is free_area_init(). kho_scratch_overlap() relies on kho_scratch pointer being initialized. Introduce kho_memory_init_early() to do this. kho_populate() would normally be a good place to do this, but unfortunately, phys_to_virt() does not work at that point on ARM64. So we need yet another initialization function. Signed-off-by: Pratyush Yadav (Google) Link: https://patch.msgid.link/20260801084833.1897543-15-pratyush@kernel.org Signed-off-by: Mike Rapoport (Microsoft) --- include/linux/kexec_handover.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kexec_handover.h b/include/linux/kexec_handover.h index 40cb95a80981..18ba417f1ada 100644 --- a/include/linux/kexec_handover.h +++ b/include/linux/kexec_handover.h @@ -33,6 +33,7 @@ void kho_remove_subtree(void *blob); int kho_retrieve_subtree(const char *name, phys_addr_t *phys, size_t *size); void kho_memory_init(void); +void kho_memory_init_early(void); void kho_populate(phys_addr_t fdt_phys, u64 fdt_len, phys_addr_t scratch_phys, u64 scratch_len); @@ -110,6 +111,8 @@ static inline int kho_retrieve_subtree(const char *name, phys_addr_t *phys, static inline void kho_memory_init(void) { } +static inline void kho_memory_init_early(void) { } + static inline void kho_populate(phys_addr_t fdt_phys, u64 fdt_len, phys_addr_t scratch_phys, u64 scratch_len) { -- cgit v1.2.3