/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_H #define _ASM_POWERPC_BOOK3S_64_HUGETLB_H /* * For radix we want generic code to handle hugetlb. But then if we want * both hash and radix to be enabled together we need to workaround the * limitations. */ void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); extern unsigned long radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags); static inline int hstate_get_psize(struct hstate *hstate) { unsigned long shift; shift = huge_page_shift(hstate); if (shift == mmu_psize_defs[MMU_PAGE_2M].shift) return MMU_PAGE_2M; else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) return MMU_PAGE_1G; else if (shift == mmu_psize_defs[MMU_PAGE_16M].shift) return MMU_PAGE_16M; else if (shift == mmu_psize_defs[MMU_PAGE_16G].shift) return MMU_PAGE_16G; else { WARN(1, "Wrong huge page shift\n"); return mmu_virtual_psize; } } #define arch_make_huge_pte arch_make_huge_pte static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, struct page *page, int writable) { unsigned long page_shift; if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) return entry; page_shift = huge_page_shift(hstate_vma(vma)); /* * We don't support 1G hugetlb pages yet. */ VM_WARN_ON(page_shift == mmu_psize_defs[MMU_PAGE_1G].shift); if (page_shift == mmu_psize_defs[MMU_PAGE_2M].shift) return __pte(pte_val(entry) | R_PAGE_LARGE); else return entry; } #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE static inline bool gigantic_page_supported(void) { /* * We used gigantic page reservation with hypervisor assist in some case. * We cannot use runtime allocation of gigantic pages in those platforms * This is hash translation mode LPARs. */ if (firmware_has_feature(FW_FEATURE_LPAR) && !radix_enabled()) return false; return true; } #endif #endif
Name | Type | Size | Permission | Actions |
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hash-4k.h | File | 3.06 KB | 0644 |
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hash-64k.h | File | 7.25 KB | 0644 |
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hash.h | File | 6.16 KB | 0644 |
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hugetlb.h | File | 2.02 KB | 0644 |
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kup-radix.h | File | 649 B | 0644 |
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mmu-hash.h | File | 24.67 KB | 0644 |
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mmu.h | File | 4.66 KB | 0644 |
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pgalloc.h | File | 6.12 KB | 0644 |
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pgtable-4k.h | File | 1.32 KB | 0644 |
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pgtable-64k.h | File | 1.55 KB | 0644 |
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pgtable.h | File | 35.48 KB | 0644 |
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radix-4k.h | File | 391 B | 0644 |
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radix-64k.h | File | 395 B | 0644 |
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radix.h | File | 8.92 KB | 0644 |
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slice.h | File | 841 B | 0644 |
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tlbflush-hash.h | File | 2.97 KB | 0644 |
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tlbflush-radix.h | File | 2.25 KB | 0644 |
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tlbflush.h | File | 3.06 KB | 0644 |
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