diff options
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash-64k.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-64k.h | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index f4650504a61e..ecc7ce0f4baf 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -40,15 +40,6 @@ /* PTE flags to conserve for HPTE identification */ #define _PAGE_HPTEFLAGS (_PAGE_BUSY | _PAGE_F_SECOND | \ _PAGE_F_GIX | _PAGE_HASHPTE | _PAGE_COMBO) - -/* Shift to put page number into pte. - * - * That gives us a max RPN of 41 bits, which means a max of 57 bits - * of addressable physical space, or 53 bits for the special 4k PFNs. - */ -#define PTE_RPN_SHIFT (16) -#define PTE_RPN_SIZE (41) - /* * we support 16 fragments per PTE page of 64K size. */ @@ -68,6 +59,7 @@ #define PGD_MASKED_BITS 0xc0000000000000ffUL #ifndef __ASSEMBLY__ +#include <asm/errno.h> /* * With 64K pages on hash table, we have a special PTE format that @@ -124,10 +116,18 @@ extern bool __rpte_sub_valid(real_pte_t rpte, unsigned long index); #define pte_pagesize_index(mm, addr, pte) \ (((pte) & _PAGE_COMBO)? MMU_PAGE_4K: MMU_PAGE_64K) -#define remap_4k_pfn(vma, addr, pfn, prot) \ - (WARN_ON(((pfn) >= (1UL << PTE_RPN_SIZE))) ? -EINVAL : \ - remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, \ - __pgprot(pgprot_val((prot)) | _PAGE_4K_PFN))) +extern int remap_pfn_range(struct vm_area_struct *, unsigned long addr, + unsigned long pfn, unsigned long size, pgprot_t); +static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, pgprot_t prot) +{ + if (pfn > (PTE_RPN_MASK >> PAGE_SHIFT)) { + WARN(1, "remap_4k_pfn called with wrong pfn value\n"); + return -EINVAL; + } + return remap_pfn_range(vma, addr, pfn, PAGE_SIZE, + __pgprot(pgprot_val(prot) | _PAGE_4K_PFN)); +} #define PTE_TABLE_SIZE PTE_FRAG_SIZE #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
