forked from mirrors/linux
c5710cd207
Only book3s/64 may select default among several HPAGE_SHIFT at runtime. 8xx always defines 512K pages as default FSL_BOOK3E always defines 4M pages as default This patch limits HUGETLB_PAGE_SIZE_VARIABLE to book3s/64 moves the definitions in subarches files. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_HUGETLB_H
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#define _ASM_POWERPC_HUGETLB_H
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#ifdef CONFIG_HUGETLB_PAGE
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#include <asm/page.h>
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#ifdef CONFIG_PPC_BOOK3S_64
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#include <asm/book3s/64/hugetlb.h>
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#elif defined(CONFIG_PPC_FSL_BOOK3E)
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#include <asm/nohash/hugetlb-book3e.h>
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#elif defined(CONFIG_PPC_8xx)
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#include <asm/nohash/32/hugetlb-8xx.h>
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#endif /* CONFIG_PPC_BOOK3S_64 */
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extern bool hugetlb_disabled;
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void hugetlbpage_init_default(void);
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void flush_dcache_icache_hugepage(struct page *page);
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int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
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unsigned long len);
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static inline int is_hugepage_only_range(struct mm_struct *mm,
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unsigned long addr,
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unsigned long len)
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{
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if (IS_ENABLED(CONFIG_PPC_MM_SLICES) && !radix_enabled())
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return slice_is_hugepage_only_range(mm, addr, len);
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return 0;
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}
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void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea,
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pte_t pte);
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#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
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void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
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unsigned long end, unsigned long floor,
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unsigned long ceiling);
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#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
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static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
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unsigned long addr, pte_t *ptep)
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{
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#ifdef CONFIG_PPC64
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return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
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#else
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return __pte(pte_update(ptep, ~0UL, 0));
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#endif
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}
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#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
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static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
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unsigned long addr, pte_t *ptep)
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{
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huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
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flush_hugetlb_page(vma, addr);
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}
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#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
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int huge_ptep_set_access_flags(struct vm_area_struct *vma,
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unsigned long addr, pte_t *ptep,
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pte_t pte, int dirty);
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static inline void arch_clear_hugepage_flags(struct page *page)
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{
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}
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#include <asm-generic/hugetlb.h>
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#else /* ! CONFIG_HUGETLB_PAGE */
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static inline void flush_hugetlb_page(struct vm_area_struct *vma,
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unsigned long vmaddr)
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{
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}
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#define hugepd_shift(x) 0
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static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
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unsigned pdshift)
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{
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return NULL;
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}
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#endif /* CONFIG_HUGETLB_PAGE */
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#endif /* _ASM_POWERPC_HUGETLB_H */
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