68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/* 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 */
|