/* * Copyright 2010 Tilera Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for * more details. * */ #ifndef _ASM_TILE_PGTABLE_32_H #define _ASM_TILE_PGTABLE_32_H /* * The level-1 index is defined by the huge page size. A PGD is composed * of PTRS_PER_PGD pgd_t's and is the top level of the page table. */ #define PGDIR_SHIFT HPAGE_SHIFT #define PGDIR_SIZE HPAGE_SIZE #define PGDIR_MASK (~(PGDIR_SIZE-1)) #define PTRS_PER_PGD _HV_L1_ENTRIES(HPAGE_SHIFT) #define PGD_INDEX(va) _HV_L1_INDEX(va, HPAGE_SHIFT) #define SIZEOF_PGD _HV_L1_SIZE(HPAGE_SHIFT) /* * The level-2 index is defined by the difference between the huge * page size and the normal page size. A PTE is composed of * PTRS_PER_PTE pte_t's and is the bottom level of the page table. * Note that the hypervisor docs use PTE for what we call pte_t, so * this nomenclature is somewhat confusing. */ #define PTRS_PER_PTE _HV_L2_ENTRIES(HPAGE_SHIFT, PAGE_SHIFT) #define PTE_INDEX(va) _HV_L2_INDEX(va, HPAGE_SHIFT, PAGE_SHIFT) #define SIZEOF_PTE _HV_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) #ifndef __ASSEMBLY__ /* * Right now we initialize only a single pte table. It can be extended * easily, subsequent pte tables have to be allocated in one physical * chunk of RAM. * * HOWEVER, if we are using an allocation scheme with slop after the * end of the page table (e.g. where our L2 page tables are 2KB but * our pages are 64KB and we are allocating via the page allocator) * we can't extend it easily. */ #define LAST_PKMAP PTRS_PER_PTE #define PKMAP_BASE ((FIXADDR_BOOT_START - PAGE_SIZE*LAST_PKMAP) & PGDIR_MASK) #ifdef CONFIG_HIGHMEM # define _VMALLOC_END (PKMAP_BASE & ~(HPAGE_SIZE-1)) #else # define _VMALLOC_END (FIXADDR_START & ~(HPAGE_SIZE-1)) #endif /* * Align the vmalloc area to an L2 page table, and leave a guard page * at the beginning and end. The vmalloc code also puts in an internal * guard page between each allocation. */ #define VMALLOC_END (_VMALLOC_END - PAGE_SIZE) extern unsigned long VMALLOC_RESERVE /* = CONFIG_VMALLOC_RESERVE */; #define _VMALLOC_START (_VMALLOC_END - VMALLOC_RESERVE) #define VMALLOC_START (_VMALLOC_START + PAGE_SIZE) /* This is the maximum possible amount of lowmem. */ #define MAXMEM (_VMALLOC_START - PAGE_OFFSET) /* We have no pmd or pud since we are strictly a two-level page table */ #define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> static inline int pud_huge_page(pud_t pud) { return 0; } /* We don't define any pgds for these addresses. */ static inline int pgd_addr_invalid(unsigned long addr) { return addr >= MEM_HV_START; } /* * Provide versions of these routines that can be used safely when * the hypervisor may be asynchronously modifying dirty/accessed bits. * ptep_get_and_clear() matches the generic one but we provide it to * be parallel with the 64-bit code. */ #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG #define __HAVE_ARCH_PTEP_SET_WRPROTECT extern int ptep_test_and_clear_young(struct vm_area_struct *, unsigned long addr, pte_t *); extern void ptep_set_wrprotect(struct mm_struct *, unsigned long addr, pte_t *); #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { pte_t pte = *ptep; pte_clear(_mm, addr, ptep); return pte; } /* * pmds are wrappers around pgds, which are the same as ptes. * It's often convenient to "cast" back and forth and use the pte methods, * which are the methods supplied by the hypervisor. */ #define pmd_pte(pmd) ((pmd).pud.pgd) #define pmdp_ptep(pmdp) (&(pmdp)->pud.pgd) #define pte_pmd(pte) ((pmd_t){ { (pte) } }) #endif /* __ASSEMBLY__ */ #endif /* _ASM_TILE_PGTABLE_32_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 439 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 5.14 KB | 0644 |
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atomic_32.h | File | 8.91 KB | 0644 |
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atomic_64.h | File | 5.51 KB | 0644 |
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backtrace.h | File | 3.98 KB | 0644 |
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barrier.h | File | 2.89 KB | 0644 |
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bitops.h | File | 2.37 KB | 0644 |
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bitops_32.h | File | 4.01 KB | 0644 |
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bitops_64.h | File | 2.67 KB | 0644 |
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cache.h | File | 2.6 KB | 0644 |
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cacheflush.h | File | 4.94 KB | 0644 |
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checksum.h | File | 1.23 KB | 0644 |
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cmpxchg.h | File | 3.47 KB | 0644 |
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compat.h | File | 7.38 KB | 0644 |
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current.h | File | 947 B | 0644 |
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delay.h | File | 1.1 KB | 0644 |
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device.h | File | 978 B | 0644 |
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div64.h | File | 319 B | 0644 |
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dma-mapping.h | File | 1.82 KB | 0644 |
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dma.h | File | 762 B | 0644 |
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elf.h | File | 5.42 KB | 0644 |
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fixmap.h | File | 2.73 KB | 0644 |
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ftrace.h | File | 1.08 KB | 0644 |
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futex.h | File | 4.23 KB | 0644 |
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hardirq.h | File | 1.28 KB | 0644 |
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hardwall.h | File | 1.08 KB | 0644 |
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highmem.h | File | 2.08 KB | 0644 |
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homecache.h | File | 4.21 KB | 0644 |
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hugetlb.h | File | 3.04 KB | 0644 |
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hv_driver.h | File | 1.92 KB | 0644 |
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ide.h | File | 758 B | 0644 |
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insn.h | File | 1.79 KB | 0644 |
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io.h | File | 12.43 KB | 0644 |
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irq.h | File | 3.11 KB | 0644 |
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irq_work.h | File | 283 B | 0644 |
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irqflags.h | File | 10.55 KB | 0644 |
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jump_label.h | File | 1.47 KB | 0644 |
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kdebug.h | File | 769 B | 0644 |
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kexec.h | File | 2.23 KB | 0644 |
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kgdb.h | File | 1.99 KB | 0644 |
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kmap_types.h | File | 1.02 KB | 0644 |
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kprobes.h | File | 2.19 KB | 0644 |
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linkage.h | File | 1.46 KB | 0644 |
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mmu.h | File | 965 B | 0644 |
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mmu_context.h | File | 4.5 KB | 0644 |
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mmzone.h | File | 2.07 KB | 0644 |
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module.h | File | 1.12 KB | 0644 |
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page.h | File | 10.32 KB | 0644 |
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pci.h | File | 6.58 KB | 0644 |
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percpu.h | File | 1.79 KB | 0644 |
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perf_event.h | File | 766 B | 0644 |
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pgalloc.h | File | 4.76 KB | 0644 |
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pgtable.h | File | 15.66 KB | 0644 |
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pgtable_32.h | File | 4.08 KB | 0644 |
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pgtable_64.h | File | 5.11 KB | 0644 |
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pmc.h | File | 2.15 KB | 0644 |
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processor.h | File | 10.62 KB | 0644 |
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ptrace.h | File | 2.96 KB | 0644 |
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sections.h | File | 1.37 KB | 0644 |
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setup.h | File | 1.63 KB | 0644 |
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sigframe.h | File | 956 B | 0644 |
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signal.h | File | 1.07 KB | 0644 |
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smp.h | File | 3.98 KB | 0644 |
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spinlock.h | File | 741 B | 0644 |
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spinlock_32.h | File | 2.9 KB | 0644 |
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spinlock_64.h | File | 3.88 KB | 0644 |
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spinlock_types.h | File | 1.58 KB | 0644 |
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stack.h | File | 2.59 KB | 0644 |
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string.h | File | 1.19 KB | 0644 |
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switch_to.h | File | 2.75 KB | 0644 |
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syscall.h | File | 2.88 KB | 0644 |
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syscalls.h | File | 2.35 KB | 0644 |
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thread_info.h | File | 5.54 KB | 0644 |
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tile-desc.h | File | 650 B | 0644 |
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tile-desc_32.h | File | 12.54 KB | 0644 |
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tile-desc_64.h | File | 10.83 KB | 0644 |
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timex.h | File | 1.71 KB | 0644 |
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tlb.h | File | 878 B | 0644 |
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tlbflush.h | File | 3.99 KB | 0644 |
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topology.h | File | 1.52 KB | 0644 |
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traps.h | File | 2.44 KB | 0644 |
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uaccess.h | File | 12.77 KB | 0644 |
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unaligned.h | File | 1.56 KB | 0644 |
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unistd.h | File | 777 B | 0644 |
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user.h | File | 717 B | 0644 |
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vdso.h | File | 1.84 KB | 0644 |
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vga.h | File | 1.05 KB | 0644 |
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word-at-a-time.h | File | 1.07 KB | 0644 |
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