1 files changed, 87 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
new file mode 100644
index 0000000000..ea71f7245a
--- /dev/null
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_HUGETLB_H
+#define _ASM_POWERPC_HUGETLB_H
+
+#ifdef CONFIG_HUGETLB_PAGE
+#include <asm/page.h>
+
+#ifdef CONFIG_PPC_BOOK3S_64
+#include <asm/book3s/64/hugetlb.h>
+#elif defined(CONFIG_PPC_E500)
+#include <asm/nohash/hugetlb-e500.h>
+#elif defined(CONFIG_PPC_8xx)
+#include <asm/nohash/32/hugetlb-8xx.h>
+#endif /* CONFIG_PPC_BOOK3S_64 */
+
+extern bool hugetlb_disabled;
+
+void __init hugetlbpage_init_defaultsize(void);
+
+int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
+			   unsigned long len);
+
+static inline int is_hugepage_only_range(struct mm_struct *mm,
+					 unsigned long addr,
+					 unsigned long len)
+{
+	if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled())
+		return slice_is_hugepage_only_range(mm, addr, len);
+	return 0;
+}
+#define is_hugepage_only_range is_hugepage_only_range
+
+#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
+void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
+			    unsigned long end, unsigned long floor,
+			    unsigned long ceiling);
+
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
+static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
+					    unsigned long addr, pte_t *ptep)
+{
+	return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
+}
+
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
+static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
+					  unsigned long addr, pte_t *ptep)
+{
+	pte_t pte;
+
+	pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
+	flush_hugetlb_page(vma, addr);
+	return pte;
+}
+
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
+int huge_ptep_set_access_flags(struct vm_area_struct *vma,
+			       unsigned long addr, pte_t *ptep,
+			       pte_t pte, int dirty);
+
+void gigantic_hugetlb_cma_reserve(void) __init;
+#include <asm-generic/hugetlb.h>
+
+#else /* ! CONFIG_HUGETLB_PAGE */
+static inline void flush_hugetlb_page(struct vm_area_struct *vma,
+				      unsigned long vmaddr)
+{
+}
+
+#define hugepd_shift(x) 0
+static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
+				    unsigned pdshift)
+{
+	return NULL;
+}
+
+
+static inline void __init gigantic_hugetlb_cma_reserve(void)
+{
+}
+
+static inline void __init hugetlbpage_init_defaultsize(void)
+{
+}
+#endif /* CONFIG_HUGETLB_PAGE */
+
+#endif /* _ASM_POWERPC_HUGETLB_H */