pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep);
+/*
+ * The version of vma_mmu_pagesize() in arch/powerpc/mm/hugetlbpage.c needs
+ * to override the version in mm/hugetlb.c
+ */
+#define vma_mmu_pagesize vma_mmu_pagesize
+
/*
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
return slice_get_unmapped_area(addr, len, flags, mmu_psize, 1, 0);
}
+unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
+{
+ unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start);
+
+ return 1UL << mmu_psize_to_shift(psize);
+}
+
/*
* Called by asm hashtable.S for doing lazy icache flush
*/
"Private_Dirty: %8lu kB\n"
"Referenced: %8lu kB\n"
"Swap: %8lu kB\n"
- "KernelPageSize: %8lu kB\n",
+ "KernelPageSize: %8lu kB\n"
+ "MMUPageSize: %8lu kB\n",
(vma->vm_end - vma->vm_start) >> 10,
mss.resident >> 10,
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
mss.private_dirty >> 10,
mss.referenced >> 10,
mss.swap >> 10,
- vma_kernel_pagesize(vma) >> 10);
+ vma_kernel_pagesize(vma) >> 10,
+ vma_mmu_pagesize(vma) >> 10);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
extern unsigned long vma_kernel_pagesize(struct vm_area_struct *vma);
+extern unsigned long vma_mmu_pagesize(struct vm_area_struct *vma);
+
static inline unsigned long huge_page_mask(struct hstate *h)
{
return h->mask;
#define huge_page_size(h) PAGE_SIZE
#define huge_page_mask(h) PAGE_MASK
#define vma_kernel_pagesize(v) PAGE_SIZE
+#define vma_mmu_pagesize(v) PAGE_SIZE
#define huge_page_order(h) 0
#define huge_page_shift(h) PAGE_SHIFT
static inline unsigned int pages_per_huge_page(struct hstate *h)
return 1UL << (hstate->order + PAGE_SHIFT);
}
+/*
+ * Return the page size being used by the MMU to back a VMA. In the majority
+ * of cases, the page size used by the kernel matches the MMU size. On
+ * architectures where it differs, an architecture-specific version of this
+ * function is required.
+ */
+#ifndef vma_mmu_pagesize
+unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
+{
+ return vma_kernel_pagesize(vma);
+}
+#endif
+
/*
* Flags for MAP_PRIVATE reservations. These are stored in the bottom
* bits of the reservation map pointer, which are always clear due to