In preparation of implementing huge pages on powerpc 8xx
without hugepd, enclose hugepd related code inside an
ifdef CONFIG_ARCH_HAS_HUGEPD
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
---
arch/powerpc/include/asm/hugetlb.h | 2 ++
arch/powerpc/include/asm/nohash/pgtable.h | 8 +++++---
arch/powerpc/mm/hugetlbpage.c | 10 ++++++++++
arch/powerpc/mm/pgtable.c | 2 ++
4 files changed, 19 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index ea71f7245a63..a05657e5701b 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -30,10 +30,12 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
}
#define is_hugepage_only_range is_hugepage_only_range
+#ifdef CONFIG_ARCH_HAS_HUGEPD
#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);
+#endif
#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h
index 427db14292c9..ac3353f7f2ac 100644
--- a/arch/powerpc/include/asm/nohash/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/pgtable.h
@@ -340,7 +340,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
#define pgprot_writecombine pgprot_noncached_wc
-#ifdef CONFIG_HUGETLB_PAGE
+#ifdef CONFIG_ARCH_HAS_HUGEPD
static inline int hugepd_ok(hugepd_t hpd)
{
#ifdef CONFIG_PPC_8xx
@@ -351,6 +351,10 @@ static inline int hugepd_ok(hugepd_t hpd)
#endif
}
+#define is_hugepd(hpd) (hugepd_ok(hpd))
+#endif
+
+#ifdef CONFIG_HUGETLB_PAGE
static inline int pmd_huge(pmd_t pmd)
{
return 0;
@@ -360,8 +364,6 @@ static inline int pud_huge(pud_t pud)
{
return 0;
}
-
-#define is_hugepd(hpd) (hugepd_ok(hpd))
#endif
int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot);
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 66ac56b26007..db73ad845a2a 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -42,6 +42,7 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr, unsigned long s
return __find_linux_pte(mm->pgd, addr, NULL, NULL);
}
+#ifdef CONFIG_ARCH_HAS_HUGEPD
static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp,
unsigned long address, unsigned int pdshift,
unsigned int pshift, spinlock_t *ptl)
@@ -193,6 +194,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
return hugepte_offset(*hpdp, addr, pdshift);
}
+#else
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long addr, unsigned long sz)
+{
+ return pte_alloc_huge(mm, pmd_off(mm, addr), addr, sz);
+}
+#endif
#ifdef CONFIG_PPC_BOOK3S_64
/*
@@ -248,6 +256,7 @@ int __init alloc_bootmem_huge_page(struct hstate *h, int nid)
return __alloc_bootmem_huge_page(h, nid);
}
+#ifdef CONFIG_ARCH_HAS_HUGEPD
#ifndef CONFIG_PPC_BOOK3S_64
#define HUGEPD_FREELIST_SIZE \
((PAGE_SIZE - sizeof(struct hugepd_freelist)) / sizeof(pte_t))
@@ -505,6 +514,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb,
}
} while (addr = next, addr != end);
}
+#endif
bool __init arch_hugetlb_valid_size(unsigned long size)
{
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 9e7ba9c3851f..acdf64c9b93e 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -487,8 +487,10 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
if (!hpdp)
return NULL;
+#ifdef CONFIG_ARCH_HAS_HUGEPD
ret_pte = hugepte_offset(*hpdp, ea, pdshift);
pdshift = hugepd_shift(*hpdp);
+#endif
out:
if (hpage_shift)
*hpage_shift = pdshift;
--
2.43.0
