Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_POWERPC_NOHASH_PGALLOC_H
|
|
#define _ASM_POWERPC_NOHASH_PGALLOC_H
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
|
|
extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
|
|
#ifdef CONFIG_PPC64
|
|
extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
|
|
#else
|
|
/* 44x etc which is BOOKE not BOOK3E */
|
|
static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
|
|
unsigned long address)
|
|
{
|
|
|
|
}
|
|
#endif /* !CONFIG_PPC_BOOK3E_64 */
|
|
|
|
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
|
|
{
|
|
pgd_t *pgd = kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
|
|
pgtable_gfp_flags(mm, GFP_KERNEL));
|
|
|
|
#ifdef CONFIG_PPC_8xx
|
|
memcpy(pgd + USER_PTRS_PER_PGD, swapper_pg_dir + USER_PTRS_PER_PGD,
|
|
(MAX_PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
|
|
#endif
|
|
return pgd;
|
|
}
|
|
|
|
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
|
|
{
|
|
kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
|
|
}
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#include <asm/nohash/64/pgalloc.h>
|
|
#else
|
|
#include <asm/nohash/32/pgalloc.h>
|
|
#endif
|
|
|
|
static inline void pgtable_free(void *table, int shift)
|
|
{
|
|
if (!shift) {
|
|
pte_fragment_free((unsigned long *)table, 0);
|
|
} else {
|
|
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
|
kmem_cache_free(PGT_CACHE(shift), table);
|
|
}
|
|
}
|
|
|
|
static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
|
|
{
|
|
unsigned long pgf = (unsigned long)table;
|
|
|
|
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
|
pgf |= shift;
|
|
tlb_remove_table(tlb, (void *)pgf);
|
|
}
|
|
|
|
static inline void __tlb_remove_table(void *_table)
|
|
{
|
|
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
|
|
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
|
|
|
|
pgtable_free(table, shift);
|
|
}
|
|
|
|
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
|
|
unsigned long address)
|
|
{
|
|
tlb_flush_pgtable(tlb, address);
|
|
pgtable_free_tlb(tlb, table, 0);
|
|
}
|
|
#endif /* _ASM_POWERPC_NOHASH_PGALLOC_H */
|