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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
#define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
/*
* hash 4k can't share hugetlb and also doesn't support THP
*/
#ifndef __ASSEMBLY__
#ifdef CONFIG_HUGETLB_PAGE
static inline int pmd_huge(pmd_t pmd)
{
/*
* leaf pte for huge page
*/
if (radix_enabled())
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
return 0;
}
static inline int pud_huge(pud_t pud)
{
/*
* leaf pte for huge page
*/
if (radix_enabled())
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
return 0;
}
/*
* With radix , we have hugepage ptes in the pud and pmd entries. We don't
* need to setup hugepage directory for them. Our pte and page directory format
* enable us to have this enabled.
*/
static inline int hugepd_ok(hugepd_t hpd)
{
if (radix_enabled())
return 0;
return hash__hugepd_ok(hpd);
}
#define is_hugepd(hpd) (hugepd_ok(hpd))
/*
* 16M and 16G huge page directory tables are allocated from slab cache
*
*/
#define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24)
#define H_16G_CACHE_INDEX \
(PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34)
static inline int get_hugepd_cache_index(int index)
{
switch (index) {
case H_16M_CACHE_INDEX:
return HTLB_16M_INDEX;
case H_16G_CACHE_INDEX:
return HTLB_16G_INDEX;
default:
BUG();
}
/* should not reach */
}
#endif /* CONFIG_HUGETLB_PAGE */
#endif /* __ASSEMBLY__ */
#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */