46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
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#define _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
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static inline pte_t *hugepd_page(hugepd_t hpd)
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{
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if (WARN_ON(!hugepd_ok(hpd)))
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return NULL;
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return (pte_t *)((hpd_val(hpd) & ~HUGEPD_SHIFT_MASK) | PD_HUGE);
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}
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static inline unsigned int hugepd_shift(hugepd_t hpd)
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{
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return hpd_val(hpd) & HUGEPD_SHIFT_MASK;
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}
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static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
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unsigned int pdshift)
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{
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/*
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* On FSL BookE, we have multiple higher-level table entries that
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* point to the same hugepte. Just use the first one since they're all
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* identical. So for that case, idx=0.
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*/
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return hugepd_page(hpd);
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}
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void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
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static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift)
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{
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/* We use the old format for PPC_FSL_BOOK3E */
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*hpdp = __hugepd(((unsigned long)new & ~PD_HUGE) | pshift);
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}
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static inline int check_and_get_huge_psize(int shift)
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{
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if (shift & 1) /* Not a power of 4 */
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return -EINVAL;
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return shift_to_mmu_psize(shift);
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}
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#endif /* _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H */
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