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makedumpfile.h
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/*
* makedumpfile.h
*
* Copyright (C) 2006, 2007, 2008, 2009, 2011 NEC Corporation
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*/
#ifndef _MAKEDUMPFILE_H
#define _MAKEDUMPFILE_H
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <gelf.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <zlib.h>
#include <libelf.h>
#include <byteswap.h>
#include <getopt.h>
#include <sys/mman.h>
#ifdef USELZO
#include <lzo/lzo1x.h>
#endif
#ifdef USESNAPPY
#include <snappy-c.h>
#endif
#ifdef USEZSTD
#include <zstd.h>
#endif
#include "common.h"
#include "dwarf_info.h"
#include "diskdump_mod.h"
#include "print_info.h"
#include "sadump_mod.h"
#include <pthread.h>
#include <semaphore.h>
#include <inttypes.h>
#define VMEMMAPSTART 0xffffea0000000000UL
#define BITS_PER_WORD 64
/*
* Result of command
*/
#define COMPLETED (0)
#define FAILED (1)
#define WRONG_RELEASE (2) /* utsname.release does not match. */
/*
* Type of memory management
*/
enum {
NOT_FOUND_MEMTYPE,
SPARSEMEM,
SPARSEMEM_EX,
DISCONTIGMEM,
FLATMEM
};
int get_mem_type(void);
/*
* Page flags
*
* The flag values of page.flags have been defined by enum since linux-2.6.26.
* The following values are for linux-2.6.25 or former.
*/
#define PG_lru_ORIGINAL (5)
#define PG_slab_ORIGINAL (7)
#define PG_private_ORIGINAL (11) /* Has something at ->private */
#define PG_compound_ORIGINAL (14) /* Is part of a compound page */
#define PG_swapcache_ORIGINAL (15) /* Swap page: swp_entry_t in private */
#define PAGE_BUDDY_MAPCOUNT_VALUE_v2_6_38 (-2)
#define PAGE_BUDDY_MAPCOUNT_VALUE_v2_6_39_to_latest_version (-128)
#define PAGE_FLAGS_SIZE_v2_6_27_to_latest_version (4)
#define PAGE_MAPPING_ANON (1)
#define LSEEKED_BITMAP (1)
#define LSEEKED_PDESC (2)
#define LSEEKED_PDATA (3)
/*
* Xen page flags
*/
#define BITS_PER_LONG (BITPERBYTE * sizeof(long))
#define PG_shift(idx) (BITS_PER_LONG - (idx))
#define PG_mask(x, idx) (x ## UL << PG_shift(idx))
/* Cleared when the owning guest 'frees' this page. */
#define PGC_allocated PG_mask(1, 1)
/* Page is Xen heap? */
#define PGC_xen_heap PG_mask(1, 2)
/* Page is broken? */
#define PGC_broken PG_mask(1, 7)
/* Mutually-exclusive page states: { inuse, offlining, offlined, free }. */
#define PGC_state PG_mask(3, 9)
#define PGC_state_inuse PG_mask(0, 9)
#define PGC_state_offlining PG_mask(1, 9)
#define PGC_state_offlined PG_mask(2, 9)
#define PGC_state_free PG_mask(3, 9)
#define page_state_is(ci, st) (((ci)&PGC_state) == PGC_state_##st)
/* Count of references to this frame. */
#define PGC_count_width PG_shift(9)
#define PGC_count_mask ((1UL<<PGC_count_width)-1)
/*
* Memory flags
*/
#define MEMORY_PAGETABLE_4L (1 << 0)
#define MEMORY_PAGETABLE_3L (1 << 1)
#define MEMORY_X86_PAE (1 << 2)
/*
* Type of address
*/
enum {
VADDR,
PADDR,
VADDR_XEN,
};
/*
* State of mmap(2)
*/
enum {
MMAP_DISABLE,
MMAP_TRY,
MMAP_ENABLE,
};
static inline int
test_bit(int nr, unsigned long addr)
{
int mask;
mask = 1 << (nr & 0x1f);
return ((mask & addr) != 0);
}
#define isLRU(flags) test_bit(NUMBER(PG_lru), flags)
#define isPrivate(flags) test_bit(NUMBER(PG_private), flags)
#define isCompoundHead(flags) (!!((flags) & NUMBER(PG_head_mask)))
#define isSwapCache(flags) test_bit(NUMBER(PG_swapcache), flags)
#define isSwapBacked(flags) test_bit(NUMBER(PG_swapbacked), flags)
#define isHWPOISON(flags) (test_bit(NUMBER(PG_hwpoison), flags) \
&& (NUMBER(PG_hwpoison) != NOT_FOUND_NUMBER))
static inline int
isAnon(unsigned long mapping)
{
return ((unsigned long)mapping & PAGE_MAPPING_ANON) != 0;
}
#define PTOB(X) (((unsigned long long)(X)) << PAGESHIFT())
#define BTOP(X) (((unsigned long long)(X)) >> PAGESHIFT())
#define PAGESIZE() (info->page_size)
#define PAGESHIFT() (info->page_shift)
#define PAGEOFFSET(X) (((unsigned long long)(X)) & (PAGESIZE() - 1))
#define PAGEBASE(X) (((unsigned long long)(X)) & ~(PAGESIZE() - 1))
/*
* for SPARSEMEM
*/
#define SECTION_SIZE_BITS() (info->section_size_bits)
#define MAX_PHYSMEM_BITS() (info->max_physmem_bits)
#define PFN_SECTION_SHIFT() (SECTION_SIZE_BITS() - PAGESHIFT())
#define PAGES_PER_SECTION() (1UL << PFN_SECTION_SHIFT())
#define _SECTIONS_PER_ROOT() (1)
#define _SECTIONS_PER_ROOT_EXTREME() (info->page_size / SIZE(mem_section))
#define SECTIONS_PER_ROOT() (info->sections_per_root)
#define SECTION_ROOT_MASK() (SECTIONS_PER_ROOT() - 1)
#define SECTION_NR_TO_ROOT(sec) ((sec) / SECTIONS_PER_ROOT())
#define SECTION_MARKED_PRESENT (1UL<<0)
#define SECTION_IS_ONLINE (1UL<<2)
/*
* SECTION_MAP_LAST_BIT was 1UL<<2 before Linux 4.13.0.
* However, we always use the higher value, because:
* 1. at least one distributor backported commit 2d070eab2e82 to kernel
* version 4.12,
* 2. it has been verified that (1UL<<2) was never set, so it is
* safe to mask that bit off even in old kernels.
*/
#define SECTION_MAP_LAST_BIT (1UL<<5)
#define SECTION_MAP_MASK (~(SECTION_MAP_LAST_BIT-1))
#define NR_SECTION_ROOTS() divideup(num_section, SECTIONS_PER_ROOT())
#define SECTION_NR_TO_PFN(sec) ((sec) << PFN_SECTION_SHIFT())
#define SECTIONS_SHIFT() (MAX_PHYSMEM_BITS() - SECTION_SIZE_BITS())
#define NR_MEM_SECTIONS() (1UL << SECTIONS_SHIFT())
/*
* Dump Level
*/
#define MIN_DUMP_LEVEL (0)
#define MAX_DUMP_LEVEL (31)
#define NUM_ARRAY_DUMP_LEVEL (MAX_DUMP_LEVEL + 1) /* enough to allocate
all the dump_level */
#define DL_EXCLUDE_ZERO (0x001) /* Exclude Pages filled with Zeros */
#define DL_EXCLUDE_CACHE (0x002) /* Exclude Cache Pages
without Private Pages */
#define DL_EXCLUDE_CACHE_PRI (0x004) /* Exclude Cache Pages
with Private Pages */
#define DL_EXCLUDE_USER_DATA (0x008) /* Exclude UserProcessData Pages */
#define DL_EXCLUDE_FREE (0x010) /* Exclude Free Pages */
/*
* For parse_line()
*/
#define NULLCHAR ('\0')
#define MAXARGS (100) /* max number of arguments to one function */
#define LASTCHAR(s) (s[strlen(s)-1])
#define BITPERBYTE (8)
#define PGMM_CACHED (512)
#define PFN_EXCLUDED (256)
#define BUFSIZE (1024)
#define BUFSIZE_FGETS (1500)
#define BUFSIZE_BITMAP (4096)
#define PFN_BUFBITMAP (BITPERBYTE*BUFSIZE_BITMAP)
#define FILENAME_BITMAP "kdump_bitmapXXXXXX"
#define FILENAME_STDOUT "STDOUT"
#define MAP_REGION (4096*1024)
/*
* Minimam vmcore has 2 ProgramHeaderTables(PT_NOTE and PT_LOAD).
*/
#define MIN_ELF32_HEADER_SIZE \
sizeof(Elf32_Ehdr)+sizeof(Elf32_Phdr)+sizeof(Elf32_Phdr)
#define MIN_ELF64_HEADER_SIZE \
sizeof(Elf64_Ehdr)+sizeof(Elf64_Phdr)+sizeof(Elf64_Phdr)
#define MIN_ELF_HEADER_SIZE \
MAX(MIN_ELF32_HEADER_SIZE, MIN_ELF64_HEADER_SIZE)
static inline int string_exists(char *s) { return (s ? TRUE : FALSE); }
#define STREQ(A, B) (string_exists((char *)A) && \
string_exists((char *)B) && \
(strcmp((char *)(A), (char *)(B)) == 0))
#define STRNEQ(A, B)(string_exists((char *)(A)) && \
string_exists((char *)(B)) && \
(strncmp((char *)(A), (char *)(B), strlen((char *)(B))) == 0))
#define UCHAR(ADDR) *((unsigned char *)(ADDR))
#define USHORT(ADDR) *((unsigned short *)(ADDR))
#define UINT(ADDR) *((unsigned int *)(ADDR))
#define ULONG(ADDR) *((unsigned long *)(ADDR))
#define ULONGLONG(ADDR) *((unsigned long long *)(ADDR))
/*
* for symbol
*/
#define INVALID_SYMBOL_DATA (ULONG_MAX)
#define SYMBOL(X) (symbol_table.X)
#define SYMBOL_INIT(symbol, str_symbol) \
do { \
SYMBOL(symbol) = get_symbol_addr(str_symbol); \
if (SYMBOL(symbol) != NOT_FOUND_SYMBOL) \
SYMBOL(symbol) += info->kaslr_offset; \
} while (0)
#define SYMBOL_INIT_NEXT(symbol, str_symbol) \
do { \
SYMBOL(symbol) = get_next_symbol_addr(str_symbol); \
if (SYMBOL(symbol) != NOT_FOUND_SYMBOL) \
SYMBOL(symbol) += info->kaslr_offset; \
} while (0)
#define WRITE_SYMBOL(str_symbol, symbol) \
do { \
if (SYMBOL(symbol) != NOT_FOUND_SYMBOL) { \
fprintf(info->file_vmcoreinfo, "%s%llx\n", \
STR_SYMBOL(str_symbol), SYMBOL(symbol)); \
} \
} while (0)
#define READ_SYMBOL(str_symbol, symbol) \
do { \
if (SYMBOL(symbol) == NOT_FOUND_SYMBOL) { \
SYMBOL(symbol) = read_vmcoreinfo_symbol(STR_SYMBOL(str_symbol)); \
if (SYMBOL(symbol) == INVALID_SYMBOL_DATA) \
return FALSE; \
if (info->read_text_vmcoreinfo && \
(SYMBOL(symbol) != NOT_FOUND_SYMBOL) && \
(SYMBOL(symbol) != INVALID_SYMBOL_DATA)) \
SYMBOL(symbol) += info->kaslr_offset; \
} \
} while (0)
/*
* for structure
*/
#define SIZE(X) (size_table.X)
#define OFFSET(X) (offset_table.X)
#define ARRAY_LENGTH(X) (array_table.X)
#define SIZE_INIT(X, Y) \
do { \
if ((SIZE(X) = get_structure_size(Y, DWARF_INFO_GET_STRUCT_SIZE)) \
== FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define TYPEDEF_SIZE_INIT(X, Y) \
do { \
if ((SIZE(X) = get_structure_size(Y, DWARF_INFO_GET_TYPEDEF_SIZE)) \
== FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define ENUM_TYPE_SIZE_INIT(X, Y) \
do { \
if ((SIZE(X) = get_structure_size(Y, \
DWARF_INFO_GET_ENUMERATION_TYPE_SIZE)) \
== FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define OFFSET_INIT(X, Y, Z) \
do { \
if ((OFFSET(X) = get_member_offset(Y, Z, DWARF_INFO_GET_MEMBER_OFFSET)) \
== FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define SYMBOL_ARRAY_LENGTH_INIT(X, Y) \
do { \
if ((ARRAY_LENGTH(X) = get_array_length(Y, NULL, DWARF_INFO_GET_SYMBOL_ARRAY_LENGTH)) == FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define SYMBOL_ARRAY_TYPE_INIT(X, Y) \
do { \
if ((ARRAY_LENGTH(X) = get_array_length(Y, NULL, DWARF_INFO_CHECK_SYMBOL_ARRAY_TYPE)) == FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define MEMBER_ARRAY_LENGTH_INIT(X, Y, Z) \
do { \
if ((ARRAY_LENGTH(X) = get_array_length(Y, Z, DWARF_INFO_GET_MEMBER_ARRAY_LENGTH)) == FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define WRITE_STRUCTURE_SIZE(str_structure, structure) \
do { \
if (SIZE(structure) != NOT_FOUND_STRUCTURE) { \
fprintf(info->file_vmcoreinfo, "%s%ld\n", \
STR_SIZE(str_structure), SIZE(structure)); \
} \
} while (0)
#define WRITE_MEMBER_OFFSET(str_member, member) \
do { \
if (OFFSET(member) != NOT_FOUND_STRUCTURE) { \
fprintf(info->file_vmcoreinfo, "%s%ld\n", \
STR_OFFSET(str_member), OFFSET(member)); \
} \
} while (0)
#define WRITE_ARRAY_LENGTH(str_array, array) \
do { \
if (ARRAY_LENGTH(array) != NOT_FOUND_STRUCTURE) { \
fprintf(info->file_vmcoreinfo, "%s%ld\n", \
STR_LENGTH(str_array), ARRAY_LENGTH(array)); \
} \
} while (0)
#define READ_STRUCTURE_SIZE(str_structure, structure) \
do { \
if (SIZE(structure) == NOT_FOUND_STRUCTURE) { \
SIZE(structure) = read_vmcoreinfo_long(STR_SIZE(str_structure)); \
if (SIZE(structure) == INVALID_STRUCTURE_DATA) \
return FALSE; \
} \
} while (0)
#define READ_MEMBER_OFFSET(str_member, member) \
do { \
if (OFFSET(member) == NOT_FOUND_STRUCTURE) { \
OFFSET(member) = read_vmcoreinfo_long(STR_OFFSET(str_member)); \
if (OFFSET(member) == INVALID_STRUCTURE_DATA) \
return FALSE; \
} \
} while (0)
#define READ_ARRAY_LENGTH(str_array, array) \
do { \
if (ARRAY_LENGTH(array) == NOT_FOUND_STRUCTURE) { \
ARRAY_LENGTH(array) = read_vmcoreinfo_long(STR_LENGTH(str_array)); \
if (ARRAY_LENGTH(array) == INVALID_STRUCTURE_DATA) \
return FALSE; \
} \
} while (0)
/*
* for number
*/
#define NUMBER(X) (number_table.X)
#define ENUM_NUMBER_INIT(number, str_number) \
do {\
NUMBER(number) = get_enum_number(str_number); \
if (NUMBER(number) == FAILED_DWARFINFO) \
return FALSE; \
} while (0)
#define WRITE_NUMBER(str_number, number) \
do { \
if (NUMBER(number) != NOT_FOUND_NUMBER) { \
fprintf(info->file_vmcoreinfo, "%s%ld\n", \
STR_NUMBER(str_number), NUMBER(number)); \
} \
} while (0)
#define READ_NUMBER(str_number, number) \
do { \
if (NUMBER(number) == NOT_FOUND_NUMBER) { \
NUMBER(number) = read_vmcoreinfo_long(STR_NUMBER(str_number)); \
if (NUMBER(number) == INVALID_STRUCTURE_DATA) \
return FALSE; \
} \
} while (0)
#define WRITE_NUMBER_UNSIGNED(str_number, number) \
do { \
if (NUMBER(number) != NOT_FOUND_NUMBER) { \
fprintf(info->file_vmcoreinfo, "%s%lu\n", \
STR_NUMBER(str_number), NUMBER(number)); \
} \
} while (0)
#define READ_NUMBER_UNSIGNED(str_number, number) \
do { \
if (NUMBER(number) == NOT_FOUND_NUMBER) { \
NUMBER(number) = read_vmcoreinfo_ulong(STR_NUMBER(str_number)); \
if (NUMBER(number) == INVALID_STRUCTURE_DATA) \
return FALSE; \
} \
} while (0)
/*
* for source file name
*/
#define SRCFILE(X) (srcfile_table.X)
#define TYPEDEF_SRCFILE_INIT(decl_name, str_decl_name) \
do { \
get_source_filename(str_decl_name, SRCFILE(decl_name), DWARF_INFO_GET_TYPEDEF_SRCNAME); \
} while (0)
#define WRITE_SRCFILE(str_decl_name, decl_name) \
do { \
if (strlen(SRCFILE(decl_name))) { \
fprintf(info->file_vmcoreinfo, "%s%s\n", \
STR_SRCFILE(str_decl_name), SRCFILE(decl_name)); \
} \
} while (0)
#define READ_SRCFILE(str_decl_name, decl_name) \
do { \
if (strlen(SRCFILE(decl_name)) == 0) { \
if (!read_vmcoreinfo_string(STR_SRCFILE(str_decl_name), SRCFILE(decl_name))) \
return FALSE; \
} \
} while (0)
/*
* Macro for getting splitting info.
*/
#define SPLITTING_DUMPFILE(i) info->splitting_info[i].name_dumpfile
#define SPLITTING_FD_BITMAP(i) info->splitting_info[i].fd_bitmap
#define SPLITTING_START_PFN(i) info->splitting_info[i].start_pfn
#define SPLITTING_END_PFN(i) info->splitting_info[i].end_pfn
#define SPLITTING_OFFSET_EI(i) info->splitting_info[i].offset_eraseinfo
#define SPLITTING_SIZE_EI(i) info->splitting_info[i].size_eraseinfo
/*
* Macro for getting parallel info.
*/
#define FD_MEMORY_PARALLEL(i) info->parallel_info[i].fd_memory
#define FD_BITMAP_MEMORY_PARALLEL(i) info->parallel_info[i].fd_bitmap_memory
#define FD_BITMAP_PARALLEL(i) info->parallel_info[i].fd_bitmap
#define BUF_PARALLEL(i) info->parallel_info[i].buf
#define BUF_OUT_PARALLEL(i) info->parallel_info[i].buf_out
#define MMAP_CACHE_PARALLEL(i) info->parallel_info[i].mmap_cache
#define ZLIB_STREAM_PARALLEL(i) info->parallel_info[i].zlib_stream
#ifdef USELZO
#define WRKMEM_PARALLEL(i) info->parallel_info[i].wrkmem
#endif
#ifdef USEZSTD
#define ZSTD_CCTX_PARALLEL(i) info->parallel_info[i].zstd_cctx
#endif
/*
* kernel version
*
* NOTE: the format of kernel_version is as follows
* 8 bits major version
* 8 bits minor version
* 16 bits release
* so version 2.6.18 would be encoded as 0x02060012
* These macros will let us decode that easier
*/
#define KVER_MAJ_SHIFT 24
#define KVER_MIN_SHIFT 16
#define KERNEL_VERSION(x,y,z) (((x) << KVER_MAJ_SHIFT) | ((y) << KVER_MIN_SHIFT) | (z))
#define OLDEST_VERSION KERNEL_VERSION(2, 6, 15) /* linux-2.6.15 */
#define LATEST_VERSION KERNEL_VERSION(5, 17, 1) /* linux-5.17.1 */
/*
* vmcoreinfo in /proc/vmcore
*/
#define FILENAME_VMCOREINFO "/tmp/vmcoreinfoXXXXXX"
/*
* field name of vmcoreinfo file
*/
#define STR_OSRELEASE "OSRELEASE="
#define STR_PAGESIZE "PAGESIZE="
#define STR_CRASHTIME "CRASHTIME="
#define STR_SYMBOL(X) "SYMBOL("X")="
#define STR_SIZE(X) "SIZE("X")="
#define STR_OFFSET(X) "OFFSET("X")="
#define STR_LENGTH(X) "LENGTH("X")="
#define STR_NUMBER(X) "NUMBER("X")="
#define STR_SRCFILE(X) "SRCFILE("X")="
#define STR_CONFIG_X86_PAE "CONFIG_X86_PAE=y"
#define STR_CONFIG_PGTABLE_4 "CONFIG_PGTABLE_4=y"
#define STR_CONFIG_PGTABLE_3 "CONFIG_PGTABLE_3=y"
#define STR_KERNELOFFSET "KERNELOFFSET="
/*
* common value
*/
#define NOSPACE (-1) /* code of write-error due to nospace */
#define DEFAULT_ORDER (4)
#define TIMEOUT_STDIN (600)
#define SIZE_BUF_STDIN (4096)
#define STRLEN_OSRELEASE (65) /* same length as diskdump.h */
/*
* The value of dependence on machine
*/
#define PAGE_OFFSET (info->page_offset)
#define VMALLOC_START (info->vmalloc_start)
#define VMALLOC_END (info->vmalloc_end)
#define VMEMMAP_START (info->vmemmap_start)
#define VMEMMAP_END (info->vmemmap_end)
#define PMASK (0x7ffffffffffff000UL)
#ifdef __aarch64__
unsigned long get_kvbase_arm64(void);
#define KVBASE get_kvbase_arm64()
#endif /* aarch64 */
#ifdef __arm__
#define KVBASE_MASK (0xffff)
#define KVBASE (SYMBOL(_stext) & ~KVBASE_MASK)
#define _SECTION_SIZE_BITS (28)
#define _MAX_PHYSMEM_BITS (32)
#define ARCH_PFN_OFFSET (info->phys_base >> PAGESHIFT())
#define PTRS_PER_PTE (512)
#define PGDIR_SHIFT (21)
#define PMD_SHIFT (21)
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE - 1))
#define _PAGE_PRESENT (1 << 0)
#endif /* arm */
#ifdef __x86__
#define __PAGE_OFFSET (0xc0000000)
#define __VMALLOC_RESERVE (128 << 20)
#define MAXMEM (-PAGE_OFFSET-__VMALLOC_RESERVE)
#define KVBASE_MASK (0x7fffff)
#define KVBASE (SYMBOL(_stext) & ~KVBASE_MASK)
#define _SECTION_SIZE_BITS (26)
#define _SECTION_SIZE_BITS_PAE_ORIG (30)
#define _SECTION_SIZE_BITS_PAE_2_6_26 (29)
#define _MAX_PHYSMEM_BITS (32)
#define _MAX_PHYSMEM_BITS_PAE (36)
#define PGDIR_SHIFT_3LEVEL (30)
#define PTRS_PER_PTE_3LEVEL (512)
#define PTRS_PER_PGD_3LEVEL (4)
#define PMD_SHIFT (21) /* only used by PAE translators */
#define PTRS_PER_PMD (512) /* only used by PAE translators */
#define PTE_SHIFT (12) /* only used by PAE translators */
#define PTRS_PER_PTE (512) /* only used by PAE translators */
#define pgd_index_PAE(address) (((address) >> PGDIR_SHIFT_3LEVEL) & (PTRS_PER_PGD_3LEVEL - 1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pte_index(address) (((address) >> PTE_SHIFT) & (PTRS_PER_PTE - 1))
#define _PAGE_PRESENT (0x001)
#define _PAGE_PSE (0x080)
/* Physical addresses are up to 52 bits (AMD64).
* Mask off bits 52-62 (reserved) and bit 63 (NX).
*/
#define ENTRY_MASK (~0xfff0000000000fffULL)
#endif /* x86 */
#ifdef __x86_64__
#define __PAGE_OFFSET_ORIG (0xffff810000000000) /* 2.6.26, or former */
#define __PAGE_OFFSET_2_6_27 (0xffff880000000000) /* 2.6.27, or later */
#define __PAGE_OFFSET_5LEVEL (0xff10000000000000) /* 5-level page table */
#define VMALLOC_START_ORIG (0xffffc20000000000) /* 2.6.30, or former */
#define VMALLOC_START_2_6_31 (0xffffc90000000000) /* 2.6.31, or later */
#define VMALLOC_START_5LEVEL (0xffa0000000000000) /* 5-level page table */
#define VMALLOC_END_ORIG (0xffffe1ffffffffff) /* 2.6.30, or former */
#define VMALLOC_END_2_6_31 (0xffffe8ffffffffff) /* 2.6.31, or later */
#define VMALLOC_END_5LEVEL (0xffd1ffffffffffff) /* 5-level page table */
#define VMEMMAP_START_ORIG (0xffffe20000000000) /* 2.6.30, or former */
#define VMEMMAP_START_2_6_31 (0xffffea0000000000) /* 2.6.31, or later */
#define VMEMMAP_START_5LEVEL (0xffd4000000000000) /* 5-level page table */
#define VMEMMAP_END_ORIG (0xffffe2ffffffffff) /* 2.6.30, or former */
#define VMEMMAP_END_2_6_31 (0xffffeaffffffffff) /* 2.6.31, or later */
#define VMEMMAP_END_5LEVEL (0xffd5ffffffffffff) /* 5-level page table */
#define __START_KERNEL_map (0xffffffff80000000)
#define KERNEL_IMAGE_SIZE_KASLR_ORIG (1024*1024*1024) /* 3.14, or later */
#define KVBASE PAGE_OFFSET
#define _SECTION_SIZE_BITS (27)
#define _MAX_PHYSMEM_BITS_ORIG (40)
#define _MAX_PHYSMEM_BITS_2_6_26 (44)
#define _MAX_PHYSMEM_BITS_2_6_31 (46)
#define _MAX_PHYSMEM_BITS_5LEVEL (52)
/*
* 4 Levels paging
*/
#define PGD_SHIFT (39)
#define PUD_SHIFT (30)
#define PMD_SHIFT (21)
#define PTE_SHIFT (12)
#define PTRS_PER_PGD (512)
#define PTRS_PER_PUD (512)
#define PTRS_PER_PMD (512)
#define PTRS_PER_PTE (512)
#define PUD_SIZE (1UL << PUD_SHIFT)
#define PUD_MASK (~(PUD_SIZE - 1))
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE - 1))
/*
* 5 Levels paging
*/
#define PGD_SHIFT_5LEVEL (48)
#define P4D_SHIFT (39)
#define PTRS_PER_PGD_5LEVEL (512)
#define PTRS_PER_P4D (512)
#define pgd5_index(address) (((address) >> PGD_SHIFT_5LEVEL) & (PTRS_PER_PGD_5LEVEL - 1))
#define pgd_index(address) (((address) >> PGD_SHIFT) & (PTRS_PER_PGD - 1))
#define p4d_index(address) (((address) >> P4D_SHIFT) & (PTRS_PER_P4D - 1))
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pte_index(address) (((address) >> PTE_SHIFT) & (PTRS_PER_PTE - 1))
#define _PAGE_PRESENT (0x001)
#define _PAGE_PSE (0x080) /* 2MB or 1GB page */
#endif /* x86_64 */
#ifdef __powerpc64__
#define __PAGE_OFFSET (0xc000000000000000)
#define KERNELBASE PAGE_OFFSET
#define VMALLOCBASE (0xD000000000000000)
#define KVBASE (SYMBOL(_stext))
#define _SECTION_SIZE_BITS (24)
#define _MAX_PHYSMEM_BITS_ORIG (44)
#define _MAX_PHYSMEM_BITS_3_7 (46)
#define _MAX_PHYSMEM_BITS_4_19 (47)
#define _MAX_PHYSMEM_BITS_4_20 (51)
#define REGION_SHIFT (60UL)
#define VMEMMAP_REGION_ID (0xfUL)
/* 4-level page table support */
/* 4K pagesize */
#define PTE_INDEX_SIZE_L4_4K 9
#define PMD_INDEX_SIZE_L4_4K 7
#define PUD_INDEX_SIZE_L4_4K 7
#define PGD_INDEX_SIZE_L4_4K 9
#define PUD_INDEX_SIZE_L4_4K_3_7 9
#define PTE_INDEX_SIZE_RADIX_4K 9
#define PMD_INDEX_SIZE_RADIX_4K 9
#define PUD_INDEX_SIZE_RADIX_4K 9
#define PGD_INDEX_SIZE_RADIX_4K 13
#define PTE_RPN_SHIFT_L4_4K 17
#define PTE_RPN_SHIFT_L4_4K_4_5 18
#define PGD_MASKED_BITS_4K 0
#define PUD_MASKED_BITS_4K 0
#define PMD_MASKED_BITS_4K 0
/* 64K pagesize */
#define PTE_INDEX_SIZE_L4_64K 12
#define PMD_INDEX_SIZE_L4_64K 12
#define PUD_INDEX_SIZE_L4_64K 0
#define PGD_INDEX_SIZE_L4_64K 4
#define PTE_INDEX_SIZE_L4_64K_3_10 8
#define PMD_INDEX_SIZE_L4_64K_3_10 10
#define PGD_INDEX_SIZE_L4_64K_3_10 12
#define PMD_INDEX_SIZE_L4_64K_4_6 5
#define PUD_INDEX_SIZE_L4_64K_4_6 5
#define PMD_INDEX_SIZE_L4_64K_4_12 10
#define PUD_INDEX_SIZE_L4_64K_4_12 7
#define PGD_INDEX_SIZE_L4_64K_4_12 8
#define PUD_INDEX_SIZE_L4_64K_4_17 10
#define PTE_INDEX_SIZE_RADIX_64K 5
#define PMD_INDEX_SIZE_RADIX_64K 9
#define PUD_INDEX_SIZE_RADIX_64K 9
#define PGD_INDEX_SIZE_RADIX_64K 13
#define PTE_RPN_SHIFT_L4_64K_V1 32
#define PTE_RPN_SHIFT_L4_64K_V2 30
#define PGD_MASKED_BITS_64K 0
#define PUD_MASKED_BITS_64K 0x1ff
#define PMD_MASKED_BITS_64K 0x1ff
#define PMD_MASKED_BITS_64K_3_11 0xfff
#define PGD_MASKED_BITS_64K_4_6 0xc0000000000000ffUL
#define PUD_MASKED_BITS_64K_4_6 0xc0000000000000ffUL
#define PMD_MASKED_BITS_64K_4_6 0xc0000000000000ffUL
#define PTE_RPN_MASK_DEFAULT 0xffffffffffffffffUL
#define PTE_RPN_SIZE_L4_4_6 (info->page_size == 65536 ? 41 : 45)
#define PTE_RPN_MASK_L4_4_6 (((1UL << PTE_RPN_SIZE_L4_4_6) - 1) << info->page_shift)
#define PTE_RPN_SHIFT_L4_4_6 info->page_shift
#define PGD_MASKED_BITS_4_7 0xc0000000000000ffUL
#define PUD_MASKED_BITS_4_7 0xc0000000000000ffUL
#define PMD_MASKED_BITS_4_7 0xc0000000000000ffUL
#define PTE_RPN_SIZE_L4_4_11 53
#define PTE_RPN_MASK_L4_4_11 \
(((1UL << PTE_RPN_SIZE_L4_4_11) - 1) & ~((1UL << info->page_shift) - 1))
#define PTE_RPN_SHIFT_L4_4_11 info->page_shift
/*
* Supported MMU types
*/
#define STD_MMU 0x0
/*
* The flag bit for radix MMU in cpu_spec.mmu_features
* in the kernel. Use the same flag here.
*/
#define RADIX_MMU 0x40
#define PGD_MASK_L4 \
(info->kernel_version >= KERNEL_VERSION(3, 10, 0) ? (info->ptrs_per_pgd - 1) : 0x1ff)
#define PGD_OFFSET_L4(vaddr) ((vaddr >> (info->l4_shift)) & PGD_MASK_L4)
#define PUD_OFFSET_L4(vaddr) \
((vaddr >> (info->l3_shift)) & (info->ptrs_per_l3 - 1))
#define PMD_OFFSET_L4(vaddr) \
((vaddr >> (info->l2_shift)) & (info->ptrs_per_l2 - 1))
#define _PAGE_PRESENT \
(info->kernel_version >= KERNEL_VERSION(4, 6, 0) ? \
(0x1UL << 63) : (info->kernel_version >= KERNEL_VERSION(4, 5, 0) ? \
0x2UL : 0x1UL))
#endif
#ifdef __powerpc32__
#define __PAGE_OFFSET (0xc0000000)
#define KERNELBASE PAGE_OFFSET
#define VMALL_START (info->vmalloc_start)
#define KVBASE (SYMBOL(_stext))
#define _SECTION_SIZE_BITS (24)
#define _MAX_PHYSMEM_BITS (44)
#endif
#ifdef __s390x__
#define __PAGE_OFFSET (info->page_size - 1)
#define KERNELBASE (0)
#define KVBASE KERNELBASE
#define _SECTION_SIZE_BITS (28)
#define _MAX_PHYSMEM_BITS_ORIG (42)
#define _MAX_PHYSMEM_BITS_3_3 (46)
/* Bits in the segment/region table address-space-control-element */
#define _ASCE_TYPE_MASK 0x0c
#define _ASCE_TABLE_LENGTH 0x03 /* region table length */
#define TABLE_LEVEL(x) (((x) & _ASCE_TYPE_MASK) >> 2)
#define TABLE_LENGTH(x) ((x) & _ASCE_TABLE_LENGTH)
/* Bits in the region table entry */
#define _REGION_ENTRY_ORIGIN ~0xfffUL /* region table origin*/
#define _REGION_ENTRY_TYPE_MASK 0x0c /* region table type mask */
#define _REGION_ENTRY_INVALID 0x20 /* invalid region table entry */
#define _REGION_ENTRY_LENGTH 0x03 /* region table length */
#define _REGION_ENTRY_LARGE 0x400
#define _REGION_OFFSET_MASK 0x7ffUL /* region/segment table offset mask */
#define RSG_TABLE_LEVEL(x) (((x) & _REGION_ENTRY_TYPE_MASK) >> 2)
#define RSG_TABLE_LENGTH(x) ((x) & _REGION_ENTRY_LENGTH)
/* Bits in the segment table entry */
#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL
#define _SEGMENT_ENTRY_LARGE 0x400
#define _SEGMENT_ENTRY_CO 0x100
#define _SEGMENT_PAGE_SHIFT 31
#define _SEGMENT_INDEX_SHIFT 20
/* Hardware bits in the page table entry */
#define _PAGE_ZERO 0x800 /* Bit pos 52 must conatin zero */
#define _PAGE_INVALID 0x400 /* HW invalid bit */
#define _PAGE_INDEX_SHIFT 12
#define _PAGE_OFFSET_MASK 0xffUL /* page table offset mask */
#endif /* __s390x__ */
#ifdef __ia64__ /* ia64 */
#define REGION_SHIFT (61)
#define KERNEL_CACHED_REGION (7)
#define KERNEL_UNCACHED_REGION (6)
#define KERNEL_VMALLOC_REGION (5)
#define USER_STACK_REGION (4)
#define USER_DATA_REGION (3)
#define USER_TEXT_REGION (2)
#define USER_SHMEM_REGION (1)
#define USER_IA32_EMUL_REGION (0)
#define KERNEL_CACHED_BASE ((unsigned long)KERNEL_CACHED_REGION << REGION_SHIFT)
#define KERNEL_UNCACHED_BASE ((unsigned long)KERNEL_UNCACHED_REGION << REGION_SHIFT)
#define KERNEL_VMALLOC_BASE ((unsigned long)KERNEL_VMALLOC_REGION << REGION_SHIFT)
#define KVBASE KERNEL_VMALLOC_BASE
#define _PAGE_SIZE_64M (26)
#define KERNEL_TR_PAGE_SIZE (1 << _PAGE_SIZE_64M)
#define KERNEL_TR_PAGE_MASK (~(KERNEL_TR_PAGE_SIZE - 1))
#define DEFAULT_PHYS_START (KERNEL_TR_PAGE_SIZE * 1)
#define _SECTION_SIZE_BITS (30)
#define _MAX_PHYSMEM_BITS (50)
/*
* 3 Levels paging
*/
#define _PAGE_PPN_MASK (((1UL << _MAX_PHYSMEM_BITS) - 1) & ~0xfffUL)
#define PTRS_PER_PTD_SHIFT (PAGESHIFT() - 3)
#define PMD_SHIFT (PAGESHIFT() + PTRS_PER_PTD_SHIFT)
#define PGDIR_SHIFT_3L (PMD_SHIFT + PTRS_PER_PTD_SHIFT)
#define MASK_POFFSET ((1UL << PAGESHIFT()) - 1)
#define MASK_PTE ((1UL << PMD_SHIFT) - 1) &~((1UL << PAGESHIFT()) - 1)
#define MASK_PMD ((1UL << PGDIR_SHIFT_3L) - 1) &~((1UL << PMD_SHIFT) - 1)
#define MASK_PGD_3L ((1UL << REGION_SHIFT) - 1) & (~((1UL << PGDIR_SHIFT_3L) - 1))
/*
* 4 Levels paging
*/
#define PUD_SHIFT (PMD_SHIFT + PTRS_PER_PTD_SHIFT)
#define PGDIR_SHIFT_4L (PUD_SHIFT + PTRS_PER_PTD_SHIFT)
#define MASK_PUD ((1UL << REGION_SHIFT) - 1) & (~((1UL << PUD_SHIFT) - 1))
#define MASK_PGD_4L ((1UL << REGION_SHIFT) - 1) & (~((1UL << PGDIR_SHIFT_4L) - 1))
/*
* Key for distinguishing PGTABLE_3L or PGTABLE_4L.
*/
#define STR_PUD_T_3L "include/asm-generic/pgtable-nopud.h"
#define STR_PUD_T_4L "include/asm/page.h"
#endif /* ia64 */
#ifdef __sparc64__
#define KVBASE (SYMBOL(_stext))
#define KVBASE_MASK (0xffff)
#define _SECTION_SIZE_BITS (30)
#define _MAX_PHYSMEM_BITS_L3 (49)
#define _MAX_PHYSMEM_BITS_L4 (53)
#define VMALLOC_START_SPARC64 (0x0000000100000000UL)
#define VMEMMAP_BASE_SPARC64 (0x0000010000000000UL)
#define VMEMMAP_CHUNK_SHIFT (22)
#define VMEMMAP_CHUNK (1UL << VMEMMAP_CHUNK_SHIFT)
#define VMEMMAP_CHUNK_MASK (~(VMEMMAP_CHUNK - 1UL))
#define PAGE_SHIFT 13
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#define MAX_PHYS_ADDRESS_LOBITS (41)
#define NR_CHUNKS_SHIFT (MAX_PHYS_ADDRESS_LOBITS - PAGE_SHIFT + 6)
#define NR_CHUNKS_MASK (~((1UL << NR_CHUNKS_SHIFT) - 1))
#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3))
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE - 1))
#define PMD_BITS (PAGE_SHIFT - 3)
#define PUD_SHIFT (PMD_SHIFT + PMD_BITS)
#define PUD_SIZE (1UL << PUD_SHIFT)
#define PUD_MASK (~(PUD_SIZE - 1))
#define PUD_BITS (PAGE_SHIFT - 3)
#define PGDIR_SHIFT_L4 (PUD_SHIFT + PUD_BITS)
#define PGDIR_SIZE_L4 (1UL << PGDIR_SHIFT_L4)
#define PGDIR_MASK_L4 (~(PGDIR_SIZE_L4 - 1))
#define PGDIR_SHIFT_L3 (PMD_SHIFT + PMD_BITS)
#define PGDIR_SIZE_L3 (1UL << PGDIR_SHIFT_L3)
#define PGDIR_MASK_L3 (~(PGDIR_SIZE_L3 - 1))
#define PGDIR_BITS (PAGE_SHIFT - 3)
#define PTRS_PER_PTE (1UL << (PAGE_SHIFT - 3))
#define PTRS_PER_PMD (1UL << PMD_BITS)
#define PTRS_PER_PUD (1UL << PUD_BITS)
#define PTRS_PER_PGD (1UL << PGDIR_BITS)
#define _PAGE_PMD_HUGE (0x0100000000000000UL)
#define _PAGE_PUD_HUGE _PAGE_PMD_HUGE
#define _PAGE_PADDR_4V (0x00FFFFFFFFFFE000UL)
#define _PAGE_PRESENT_4V (0x0000000000000010UL)
typedef unsigned long pte_t;
typedef unsigned long pmd_t;
typedef unsigned long pud_t;
typedef unsigned long pgd_t;
#define pud_none(pud) (!(pud))
#define pgd_none(pgd) (!(pgd))
#define pmd_none(pmd) (!(pmd))
#define pte_to_pa(pte) (pte & _PAGE_PADDR_4V)
#define pgd_index_l4(addr) (((addr) >> PGDIR_SHIFT_L4) & (PTRS_PER_PGD - 1))
#define pgd_offset_l4(pgdir,addr) ((unsigned long) \
((pgd_t *)pgdir + pgd_index_l4(addr)))
#define pgd_index_l3(addr) (((addr) >> PGDIR_SHIFT_L3) & (PTRS_PER_PGD - 1))
#define pgd_offset_l3(pgdir,addr) ((unsigned long) \
((pgd_t *)pgdir + pgd_index_l3(addr)))
#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#define pud_offset(pgdp, addr) ((unsigned long) \
((pud_t *)pgdp + pud_index(addr)))
#define pud_large(pud) (pud & _PAGE_PUD_HUGE)
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pmd_offset(pudp, addr) ((unsigned long) \
((pmd_t *)pudp + pmd_index(addr)))
#define pmd_large(pmd) (pmd & _PAGE_PMD_HUGE)
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset(pmdp, addr) ((unsigned long) \
((pte_t *)(pte_to_pa(pmdp) + pte_index(addr))))
#define pte_present(pte) (pte & _PAGE_PRESENT_4V)
#endif /* sparc64 */
#ifdef __mips64__ /* mips64 */
#define KVBASE PAGE_OFFSET
#define _SECTION_SIZE_BITS (28)
#define _MAX_PHYSMEM_BITS (48)
#define _PAGE_PRESENT (1 << 0)
#define _PAGE_HUGE (1 << 4)
typedef unsigned long pte_t;
typedef unsigned long pmd_t;
typedef unsigned long pgd_t;
#define PAGE_MASK (~(PAGESIZE() - 1))
#define PMD_MASK (~(PMD_SIZE - 1))
#define PMD_SHIFT ((PAGESHIFT() - 3) * 2 + 3)
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PGDIR_SHIFT ((PAGESHIFT() - 3) * 3 + 3)
#define PTRS_PER_PTE (1 << (PAGESHIFT() - 3))
#define PTRS_PER_PMD PTRS_PER_PTE
#define PTRS_PER_PGD PTRS_PER_PTE
#define pte_index(vaddr) (((vaddr) >> PAGESHIFT()) & (PTRS_PER_PTE - 1))
#define pmd_page_paddr(pmd) (pmd & (int32_t)PAGE_MASK)
#define pte_offset(dir, vaddr) ((pte_t *)pmd_page_paddr((*dir)) + pte_index(vaddr))
#define pmd_index(vaddr) (((vaddr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pgd_page_paddr(pgd) (pgd & (int32_t)PAGE_MASK)
#define pmd_offset(pgd, vaddr) ((pmd_t *)pgd_page_paddr((*pgd)) + pmd_index(vaddr))
#define pgd_index(vaddr) (((vaddr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_offset(pgdir, vaddr) ((pgd_t *)(pgdir) + pgd_index(vaddr))
#endif /* mips64 */
/*
* The function of dependence on machine