hugetlb.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_SPARC64_HUGETLB_H
 3#define _ASM_SPARC64_HUGETLB_H
 4
 5#include <asm/page.h>
 6
 7#ifdef CONFIG_HUGETLB_PAGE
 8struct pud_huge_patch_entry {
 9	unsigned int addr;
10	unsigned int insn;
11};
12extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
13#endif
14
15#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
16void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
17		     pte_t *ptep, pte_t pte, unsigned long sz);
18void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
19		     pte_t *ptep, pte_t pte);
20
21#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
22pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
23			      pte_t *ptep, unsigned long sz);
24
25#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
26static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
27					  unsigned long addr, pte_t *ptep)
28{
29	return *ptep;
30}
31
32#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
33static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
34					   unsigned long addr, pte_t *ptep)
35{
36	pte_t old_pte = *ptep;
37	__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
38}
39
40#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
41static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
42					     unsigned long addr, pte_t *ptep,
43					     pte_t pte, int dirty)
44{
45	int changed = !pte_same(*ptep, pte);
46	if (changed) {
47		__set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
48		flush_tlb_page(vma, addr);
49	}
50	return changed;
51}
52
53#include <asm-generic/hugetlb.h>
54
55#endif /* _ASM_SPARC64_HUGETLB_H */