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powerpc/mm/book3s64: Move kfence and debug_pagealloc related calls to __init section

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Move a few kfence and debug_pagealloc related functions in hash_utils.c
and radix_pgtable.c to __init sections since these are only invoked once
by an __init function during system initialization.

i.e.
- hash_debug_pagealloc_alloc_slots()
- hash_kfence_alloc_pool()
- hash_kfence_map_pool()
  The above 3 functions only gets called by __init htab_initialize().

- alloc_kfence_pool()
- map_kfence_pool()
  The above 2 functions only gets called by __init radix_init_pgtable()

This should also help fix warning msgs like:

>> WARNING: modpost: vmlinux: section mismatch in reference:
hash_debug_pagealloc_alloc_slots+0xb0 (section: .text) ->
memblock_alloc_try_nid (section: .init.text)

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504190552.mnFGs5sj-lkp@intel.com/
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20250717232519.2984886-8-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Ritesh Harjani (IBM) 2025-07-17 16:25:13 -07:00 committed by Kees Cook
parent 437641a72d
commit 645d1b6664
2 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/mm/book3s64/hash_utils.c
View File

@ -343,7 +343,7 @@ static inline bool hash_supports_debug_pagealloc(void)
static u8 *linear_map_hash_slots;
static unsigned long linear_map_hash_count;
static DEFINE_RAW_SPINLOCK(linear_map_hash_lock);
static void hash_debug_pagealloc_alloc_slots(void)
static __init void hash_debug_pagealloc_alloc_slots(void)
{
if (!hash_supports_debug_pagealloc())
return;
@ -409,7 +409,7 @@ static DEFINE_RAW_SPINLOCK(linear_map_kf_hash_lock);
static phys_addr_t kfence_pool;
static inline void hash_kfence_alloc_pool(void)
static __init void hash_kfence_alloc_pool(void)
{
if (!kfence_early_init_enabled())
goto err;
@ -445,7 +445,7 @@ static inline void hash_kfence_alloc_pool(void)
disable_kfence();
}
static inline void hash_kfence_map_pool(void)
static __init void hash_kfence_map_pool(void)
{
unsigned long kfence_pool_start, kfence_pool_end;
unsigned long prot = pgprot_val(PAGE_KERNEL);

4
arch/powerpc/mm/book3s64/radix_pgtable.c
View File

@ -363,7 +363,7 @@ static int __meminit create_physical_mapping(unsigned long start,
}
#ifdef CONFIG_KFENCE
static inline phys_addr_t alloc_kfence_pool(void)
static __init phys_addr_t alloc_kfence_pool(void)
{
phys_addr_t kfence_pool;
@ -393,7 +393,7 @@ static inline phys_addr_t alloc_kfence_pool(void)
return 0;
}
static inline void map_kfence_pool(phys_addr_t kfence_pool)
static __init void map_kfence_pool(phys_addr_t kfence_pool)
{
if (!kfence_pool)
return;