/* SPDX-License-Identifier: GPL-2.0 */
|
#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
|
#define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
|
|
#ifndef __ASSEMBLY__
|
#ifdef CONFIG_HUGETLB_PAGE
|
/*
|
* We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have
|
* 16GB hugepage pte in PGD and 16MB hugepage pte at PMD;
|
*
|
* Defined in such a way that we can optimize away code block at build time
|
* if CONFIG_HUGETLB_PAGE=n.
|
*
|
* returns true for pmd migration entries, THP, devmap, hugetlb
|
* But compile time dependent on CONFIG_HUGETLB_PAGE
|
*/
|
static inline int pmd_huge(pmd_t pmd)
|
{
|
/*
|
* leaf pte for huge page
|
*/
|
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
|
}
|
|
static inline int pud_huge(pud_t pud)
|
{
|
/*
|
* leaf pte for huge page
|
*/
|
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
|
}
|
|
static inline int pgd_huge(pgd_t pgd)
|
{
|
/*
|
* leaf pte for huge page
|
*/
|
return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
|
}
|
#define pgd_huge pgd_huge
|
|
/*
|
* With 64k page size, we have hugepage ptes in the pgd 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)
|
{
|
return 0;
|
}
|
|
#define is_hugepd(pdep) 0
|
|
/*
|
* This should never get called
|
*/
|
static inline int get_hugepd_cache_index(int index)
|
{
|
BUG();
|
}
|
|
#endif /* CONFIG_HUGETLB_PAGE */
|
|
static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr,
|
unsigned long pfn, pgprot_t prot)
|
{
|
if (radix_enabled())
|
BUG();
|
return hash__remap_4k_pfn(vma, addr, pfn, prot);
|
}
|
#endif /* __ASSEMBLY__ */
|
#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */
|
