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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/arch/arm64/include/asm/hugetlb.h
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..
@@ -1,18 +1,10 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * arch/arm64/include/asm/hugetlb.h
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  *
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  * Copyright (C) 2013 Linaro Ltd.
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  *
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  * Based on arch/x86/include/asm/hugetlb.h
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #ifndef __ASM_HUGETLB_H
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@@ -20,78 +12,45 @@
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12
 
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 #include <asm/page.h>
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14
 
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-static inline pte_t huge_ptep_get(pte_t *ptep)
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-{
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-	return READ_ONCE(*ptep);
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-}
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-
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-
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-
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-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
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-					  unsigned long addr, unsigned long end,
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-					  unsigned long floor,
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-					  unsigned long ceiling)
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-{
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-	free_pgd_range(tlb, addr, end, floor, ceiling);
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-}
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-
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-static inline int is_hugepage_only_range(struct mm_struct *mm,
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-					 unsigned long addr, unsigned long len)
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-{
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-	return 0;
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-}
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-
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-static inline int prepare_hugepage_range(struct file *file,
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-					 unsigned long addr, unsigned long len)
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-{
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-	struct hstate *h = hstate_file(file);
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-	if (len & ~huge_page_mask(h))
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-		return -EINVAL;
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-	if (addr & ~huge_page_mask(h))
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-		return -EINVAL;
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-	return 0;
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-}
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-
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-static inline int huge_pte_none(pte_t pte)
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-{
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-	return pte_none(pte);
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-}
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-
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-static inline pte_t huge_pte_wrprotect(pte_t pte)
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-{
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-	return pte_wrprotect(pte);
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-}
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+#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
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+#define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
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+extern bool arch_hugetlb_migration_supported(struct hstate *h);
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+#endif
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 static inline void arch_clear_hugepage_flags(struct page *page)
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 {
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 	clear_bit(PG_dcache_clean, &page->flags);
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 }
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+#define arch_clear_hugepage_flags arch_clear_hugepage_flags
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 extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
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 				struct page *page, int writable);
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 #define arch_make_huge_pte arch_make_huge_pte
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+#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
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 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
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 			    pte_t *ptep, pte_t pte);
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+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
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 extern 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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+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
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 extern 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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+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
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 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
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 				    unsigned long addr, pte_t *ptep);
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+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
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 extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
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 				  unsigned long addr, pte_t *ptep);
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+#define __HAVE_ARCH_HUGE_PTE_CLEAR
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 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
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 			   pte_t *ptep, unsigned long sz);
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-#define huge_pte_clear huge_pte_clear
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 extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
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 				 pte_t *ptep, pte_t pte, unsigned long sz);
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 #define set_huge_swap_pte_at set_huge_swap_pte_at
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-#include <asm-generic/hugetlb.h>
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+void __init arm64_hugetlb_cma_reserve(void);
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-#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE
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-static inline bool gigantic_page_supported(void) { return true; }
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-#endif
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+#include <asm-generic/hugetlb.h>
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 #endif /* __ASM_HUGETLB_H */