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mm: constify arguments in default pxdp_get()

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Generic MM default pxdp_get() helpers fetch the values contained in
pgtable entries via READ_ONCE() without modifying them.  Just make their
arguments explicitly 'const' for some additional protection.

Link: https://lore.kernel.org/20260918064928.793742-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: David Hildenbrand <david@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Reviewed-by: SJ Park <sj@kernel.org>
Cc: Pedro Falcato <pfalcato@suse.de>
This commit is contained in:
Anshuman Khandual 2026-09-18 12:19:28 +05:30 committed by Andrew Morton
parent ebd1a08c19
commit 48bd5dc504
1 changed files with 5 additions and 5 deletions
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10
include/linux/pgtable.h
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@ -490,35 +490,35 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma,
#endif
#ifndef ptep_get
static inline pte_t ptep_get(pte_t *ptep)
static inline pte_t ptep_get(const pte_t *ptep)
{
return READ_ONCE(*ptep);
}
#endif
#ifndef pmdp_get
static inline pmd_t pmdp_get(pmd_t *pmdp)
static inline pmd_t pmdp_get(const pmd_t *pmdp)
{
return READ_ONCE(*pmdp);
}
#endif
#ifndef pudp_get
static inline pud_t pudp_get(pud_t *pudp)
static inline pud_t pudp_get(const pud_t *pudp)
{
return READ_ONCE(*pudp);
}
#endif
#ifndef p4dp_get
static inline p4d_t p4dp_get(p4d_t *p4dp)
static inline p4d_t p4dp_get(const p4d_t *p4dp)
{
return READ_ONCE(*p4dp);
}
#endif
#ifndef pgdp_get
static inline pgd_t pgdp_get(pgd_t *pgdp)
static inline pgd_t pgdp_get(const pgd_t *pgdp)
{
return READ_ONCE(*pgdp);
}