使用crash跟踪linux内核（三）- 页表（内核页表共享）
Linux 所有进程共享内核页表。
一、进程内核页表的比较
[root@kongu pagetable_test]# crash /usr/lib/debug/lib/modules/2.6.32-431.el6.x86_64/vmlinux /boot/System.map-2.6.32-431.el6.x86_64
crash 6.1.0-5.el6
Copyright (C) 2002-2012 Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation
Copyright (C) 1999-2006 Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited
Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. Enter "help copying" to see the conditions.
This program has absolutely no warranty. Enter "help warranty" for details.
GNU gdb (GDB) 7.3.1
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...
SYSTEM MAP: /boot/System.map-2.6.32-431.el6.x86_64
DEBUG KERNEL: /usr/lib/debug/lib/modules/2.6.32-431.el6.x86_64/vmlinux (2.6.32-431.el6.x86_64)
DUMPFILE: /dev/crash
CPUS: 2
DATE: Wed Jul 12 01:58:37 2017
UPTIME: 04:09:00
LOAD AVERAGE: 0.14, 0.03, 0.01
TASKS: 287
NODENAME: kongu
RELEASE: 2.6.32-431.el6.x86_64
VERSION: #1 SMP Sun Nov 10 22:19:54 EST 2013
MACHINE: x86_64 (2294 Mhz)
MEMORY: 2 GB
PID: 21054
COMMAND: "crash"
TASK: ffff880037555500 [THREAD_INFO: ffff880016996000]
CPU: 1
STATE: TASK_RUNNING (ACTIVE)
crash> !ps -ef | grep pagetable
root 21017 9721 0 01:52 pts/2 00:00:00 ./pagetable_test
root 21066 21054 0 01:59 pts/0 00:00:00 sh -c ps -ef | grep pagetable
root 21068 21066 0 01:59 pts/0 00:00:00 grep pagetable
crash> set 21017
PID: 21017
COMMAND: "pagetable_test"
TASK: ffff8800168be040 [THREAD_INFO: ffff88007cd12000]
CPU: 0
STATE: TASK_INTERRUPTIBLE
crash> px ((struct task_struct*)0xffff8800168be040)->mm->pgd //PGD虚拟地址
$3 = (pgd_t *) 0xffff88003a1e2000
crash> px 0xffff88003a1e2000-0xffff880000000000 //虚拟地址转为物理地址
$4 = 0x3a1e2000 //物理地址，运行时放在CR3
crash> rd -p 0x3a1e2000 512 //进程pagetable_test的pgd表
3a1e2000: 0000000016946067 0000000000000000 g`..............
3a1e2010: 0000000000000000 0000000000000000 ................
3a1e2020: 0000000000000000 0000000000000000 ................
3a1e2030: 0000000000000000 0000000000000000 ................
3a1e2040: 0000000000000000 0000000000000000 ................
3a1e2050: 0000000000000000 0000000000000000 ................
3a1e2060: 0000000000000000 0000000000000000 ................
3a1e2070: 0000000000000000 0000000000000000 ................
3a1e2080: 0000000000000000 0000000000000000 ................
3a1e2090: 0000000000000000 0000000000000000 ................
3a1e20a0: 0000000000000000 0000000000000000 ................
3a1e20b0: 0000000000000000 0000000000000000 ................
3a1e20c0: 0000000000000000 0000000000000000 ................
3a1e20d0: 0000000000000000 0000000000000000 ................
3a1e20e0: 0000000000000000 0000000000000000 ................
3a1e20f0: 0000000000000000 0000000000000000 ................
3a1e2100: 0000000000000000 0000000000000000 ................
3a1e2110: 0000000000000000 0000000000000000 ................
3a1e2120: 0000000000000000 0000000000000000 ................
3a1e2130: 0000000000000000 0000000000000000 ................
3a1e2140: 0000000000000000 0000000000000000 ................
3a1e2150: 0000000000000000 0000000000000000 ................
3a1e2160: 0000000000000000 0000000000000000 ................
3a1e2170: 0000000000000000 0000000000000000 ................
3a1e2180: 0000000000000000 0000000000000000 ................
3a1e2190: 0000000000000000 0000000000000000 ................
3a1e21a0: 0000000000000000 0000000000000000 ................
3a1e21b0: 0000000000000000 0000000000000000 ................
3a1e21c0: 0000000000000000 0000000000000000 ................
3a1e21d0: 0000000000000000 0000000000000000 ................
3a1e21e0: 0000000000000000 0000000000000000 ................
3a1e21f0: 0000000000000000 0000000000000000 ................
3a1e2200: 0000000000000000 0000000000000000 ................
3a1e2210: 0000000000000000 0000000000000000 ................
3a1e2220: 0000000000000000 0000000000000000 ................
3a1e2230: 0000000000000000 0000000000000000 ................
3a1e2240: 0000000000000000 0000000000000000 ................
3a1e2250: 0000000000000000 0000000000000000 ................
3a1e2260: 0000000000000000 0000000000000000 ................
3a1e2270: 0000000000000000 0000000000000000 ................
3a1e2280: 0000000000000000 0000000000000000 ................
3a1e2290: 0000000000000000 0000000000000000 ................
3a1e22a0: 0000000000000000 0000000000000000 ................
3a1e22b0: 0000000000000000 0000000000000000 ................
3a1e22c0: 0000000000000000 0000000000000000 ................
3a1e22d0: 0000000000000000 0000000000000000 ................
3a1e22e0: 0000000000000000 0000000000000000 ................
3a1e22f0: 0000000000000000 0000000000000000 ................
3a1e2300: 0000000000000000 0000000000000000 ................
3a1e2310: 0000000000000000 0000000000000000 ................
3a1e2320: 0000000000000000 0000000000000000 ................
3a1e2330: 0000000000000000 0000000000000000 ................
3a1e2340: 0000000000000000 0000000000000000 ................
3a1e2350: 0000000000000000 0000000000000000 ................
3a1e2360: 0000000000000000 0000000000000000 ................
3a1e2370: 0000000000000000 0000000000000000 ................
3a1e2380: 0000000000000000 0000000000000000 ................
3a1e2390: 0000000000000000 0000000000000000 ................
3a1e23a0: 0000000000000000 0000000000000000 ................
3a1e23b0: 0000000000000000 0000000000000000 ................
3a1e23c0: 0000000000000000 0000000000000000 ................
3a1e23d0: 0000000000000000 0000000000000000 ................
3a1e23e0: 0000000000000000 0000000000000000 ................
3a1e23f0: 0000000000000000 0000000000000000 ................
3a1e2400: 0000000000000000 0000000000000000 ................
3a1e2410: 0000000000000000 0000000000000000 ................
3a1e2420: 0000000000000000 0000000000000000 ................
3a1e2430: 0000000000000000 0000000000000000 ................
3a1e2440: 0000000000000000 0000000000000000 ................
3a1e2450: 0000000000000000 0000000000000000 ................
3a1e2460: 0000000000000000 0000000000000000 ................
3a1e2470: 0000000000000000 0000000000000000 ................
3a1e2480: 0000000000000000 0000000000000000 ................
3a1e2490: 0000000000000000 0000000000000000 ................
3a1e24a0: 0000000000000000 0000000000000000 ................
3a1e24b0: 0000000000000000 0000000000000000 ................
3a1e24c0: 0000000000000000 0000000000000000 ................
3a1e24d0: 0000000000000000 0000000000000000 ................
3a1e24e0: 0000000000000000 0000000000000000 ................
3a1e24f0: 0000000000000000 0000000000000000 ................
3a1e2500: 0000000000000000 0000000000000000 ................
3a1e2510: 0000000000000000 0000000000000000 ................
3a1e2520: 0000000000000000 0000000000000000 ................
3a1e2530: 0000000000000000 0000000000000000 ................
3a1e2540: 0000000000000000 0000000000000000 ................
3a1e2550: 0000000000000000 0000000000000000 ................
3a1e2560: 0000000000000000 0000000000000000 ................
3a1e2570: 0000000000000000 0000000000000000 ................
3a1e2580: 0000000000000000 0000000000000000 ................
3a1e2590: 0000000000000000 0000000000000000 ................
3a1e25a0: 0000000000000000 0000000000000000 ................
3a1e25b0: 0000000000000000 0000000000000000 ................
3a1e25c0: 0000000000000000 0000000000000000 ................
3a1e25d0: 0000000000000000 0000000000000000 ................
3a1e25e0: 0000000000000000 0000000000000000 ................
3a1e25f0: 0000000000000000 0000000000000000 ................
3a1e2600: 0000000000000000 0000000000000000 ................
3a1e2610: 0000000000000000 0000000000000000 ................
3a1e2620: 0000000000000000 0000000000000000 ................
3a1e2630: 0000000000000000 0000000000000000 ................
3a1e2640: 0000000000000000 0000000000000000 ................
3a1e2650: 0000000000000000 0000000000000000 ................
3a1e2660: 0000000000000000 0000000000000000 ................
3a1e2670: 0000000000000000 0000000000000000 ................
3a1e2680: 0000000000000000 0000000000000000 ................
3a1e2690: 0000000000000000 0000000000000000 ................
3a1e26a0: 0000000000000000 0000000000000000 ................
3a1e26b0: 0000000000000000 0000000000000000 ................
3a1e26c0: 0000000000000000 0000000000000000 ................
3a1e26d0: 0000000000000000 0000000000000000 ................
3a1e26e0: 0000000000000000 0000000000000000 ................
3a1e26f0: 0000000000000000 0000000000000000 ................
3a1e2700: 0000000000000000 0000000000000000 ................
3a1e2710: 0000000000000000 0000000000000000 ................
3a1e2720: 0000000000000000 0000000000000000 ................
3a1e2730: 0000000000000000 0000000000000000 ................
3a1e2740: 0000000000000000 0000000000000000 ................
3a1e2750: 0000000000000000 0000000000000000 ................
3a1e2760: 0000000000000000 0000000000000000 ................
3a1e2770: 0000000000000000 0000000000000000 ................
3a1e2780: 0000000000000000 0000000000000000 ................
3a1e2790: 0000000000000000 0000000000000000 ................
3a1e27a0: 0000000000000000 0000000000000000 ................
3a1e27b0: 0000000000000000 0000000000000000 ................
3a1e27c0: 0000000000000000 0000000000000000 ................
3a1e27d0: 0000000000000000 0000000000000000 ................
3a1e27e0: 0000000000000000 0000000000000000 ................
3a1e27f0: 000000007bc13067 00000000370ea067 g0.{....g..7....
3a1e2800: 0000000000000000 0000000000000000 ................
3a1e2810: 0000000000000000 0000000000000000 ................
3a1e2820: 0000000000000000 0000000000000000 ................
3a1e2830: 0000000000000000 0000000000000000 ................
3a1e2840: 0000000000000000 0000000000000000 ................
3a1e2850: 0000000000000000 0000000000000000 ................
3a1e2860: 0000000000000000 0000000000000000 ................
3a1e2870: 0000000000000000 0000000000000000 ................
3a1e2880: 0000000001a86063 0000000000000000 c`..............
3a1e2890: 0000000000000000 0000000000000000 ................
3a1e28a0: 0000000000000000 0000000000000000 ................
3a1e28b0: 0000000000000000 0000000000000000 ................
3a1e28c0: 0000000000000000 0000000000000000 ................
3a1e28d0: 0000000000000000 0000000000000000 ................
3a1e28e0: 0000000000000000 0000000000000000 ................
3a1e28f0: 0000000000000000 0000000000000000 ................
3a1e2900: 0000000000000000 0000000000000000 ................
3a1e2910: 0000000000000000 0000000000000000 ................
3a1e2920: 0000000000000000 0000000000000000 ................
3a1e2930: 0000000000000000 0000000000000000 ................
3a1e2940: 0000000000000000 0000000000000000 ................
3a1e2950: 0000000000000000 0000000000000000 ................
3a1e2960: 0000000000000000 0000000000000000 ................
3a1e2970: 0000000000000000 0000000000000000 ................
3a1e2980: 0000000000000000 0000000000000000 ................
3a1e2990: 0000000000000000 0000000000000000 ................
3a1e29a0: 0000000000000000 0000000000000000 ................
3a1e29b0: 0000000000000000 0000000000000000 ................
3a1e29c0: 0000000000000000 0000000000000000 ................
3a1e29d0: 0000000000000000 0000000000000000 ................
3a1e29e0: 0000000000000000 0000000000000000 ................
3a1e29f0: 0000000000000000 0000000000000000 ................
3a1e2a00: 0000000000000000 0000000000000000 ................
3a1e2a10: 0000000000000000 0000000000000000 ................
3a1e2a20: 0000000000000000 0000000000000000 ................
3a1e2a30: 0000000000000000 0000000000000000 ................
3a1e2a40: 0000000000000000 0000000000000000 ................
3a1e2a50: 0000000000000000 0000000000000000 ................
3a1e2a60: 0000000000000000 0000000000000000 ................
3a1e2a70: 0000000000000000 0000000000000000 ................
3a1e2a80: 0000000000000000 0000000000000000 ................
3a1e2a90: 0000000000000000 0000000000000000 ................
3a1e2aa0: 0000000000000000 0000000000000000 ................
3a1e2ab0: 0000000000000000 0000000000000000 ................
3a1e2ac0: 0000000000000000 0000000000000000 ................
3a1e2ad0: 0000000000000000 0000000000000000 ................
3a1e2ae0: 0000000000000000 0000000000000000 ................
3a1e2af0: 0000000000000000 0000000000000000 ................
3a1e2b00: 0000000000000000 0000000000000000 ................
3a1e2b10: 0000000000000000 0000000000000000 ................
3a1e2b20: 0000000000000000 0000000000000000 ................
3a1e2b30: 0000000000000000 0000000000000000 ................
3a1e2b40: 0000000000000000 0000000000000000 ................
3a1e2b50: 0000000000000000 0000000000000000 ................
3a1e2b60: 0000000000000000 0000000000000000 ................
3a1e2b70: 0000000000000000 0000000000000000 ................
3a1e2b80: 0000000000000000 0000000000000000 ................
3a1e2b90: 0000000000000000 0000000000000000 ................
3a1e2ba0: 0000000000000000 0000000000000000 ................
3a1e2bb0: 0000000000000000 0000000000000000 ................
3a1e2bc0: 0000000000000000 0000000000000000 ................
3a1e2bd0: 0000000000000000 0000000000000000 ................
3a1e2be0: 0000000000000000 0000000000000000 ................
3a1e2bf0: 0000000000000000 0000000000000000 ................
3a1e2c00: 0000000000000000 0000000000000000 ................
3a1e2c10: 0000000000000000 0000000000000000 ................
3a1e2c20: 0000000000000000 0000000000000000 ................
3a1e2c30: 0000000000000000 0000000000000000 ................
3a1e2c40: 0000000000000000 0000000000000000 ................
3a1e2c50: 0000000000000000 0000000000000000 ................
3a1e2c60: 0000000000000000 0000000000000000 ................
3a1e2c70: 0000000000000000 0000000000000000 ................
3a1e2c80: 0000000000000000 0000000000000000 ................
3a1e2c90: 000000007fac5067 0000000000000000 gP..............
3a1e2ca0: 0000000000000000 0000000000000000 ................
3a1e2cb0: 0000000000000000 0000000000000000 ................
3a1e2cc0: 0000000000000000 0000000000000000 ................
3a1e2cd0: 0000000000000000 0000000000000000 ................
3a1e2ce0: 0000000000000000 0000000000000000 ................
3a1e2cf0: 0000000000000000 0000000000000000 ................
3a1e2d00: 0000000000000000 0000000000000000 ................
3a1e2d10: 0000000000000000 0000000000000000 ................
3a1e2d20: 0000000000000000 0000000000000000 ................
3a1e2d30: 0000000000000000 0000000000000000 ................
3a1e2d40: 0000000000000000 0000000000000000 ................
3a1e2d50: 0000000000000000 0000000000000000 ................
3a1e2d60: 0000000000000000 0000000000000000 ................
3a1e2d70: 0000000000000000 0000000000000000 ................
3a1e2d80: 0000000000000000 0000000000000000 ................
3a1e2d90: 0000000000000000 0000000000000000 ................
3a1e2da0: 0000000000000000 0000000000000000 ................
3a1e2db0: 0000000000000000 0000000000000000 ................
3a1e2dc0: 0000000000000000 0000000000000000 ................
3a1e2dd0: 0000000000000000 0000000000000000 ................
3a1e2de0: 0000000000000000 0000000000000000 ................
3a1e2df0: 0000000000000000 0000000000000000 ................
3a1e2e00: 0000000000000000 0000000000000000 ................
3a1e2e10: 0000000000000000 0000000000000000 ................
3a1e2e20: 0000000000000000 0000000000000000 ................
3a1e2e30: 0000000000000000 0000000000000000 ................
3a1e2e40: 0000000000000000 0000000000000000 ................
3a1e2e50: 0000000000000000 0000000000000000 ................
3a1e2e60: 0000000000000000 0000000000000000 ................
3a1e2e70: 0000000000000000 0000000000000000 ................
3a1e2e80: 0000000000000000 0000000037871067 ........g..7....
3a1e2e90: 0000000000000000 0000000000000000 ................
3a1e2ea0: 0000000002423067 0000000000000000 g0B.............
3a1e2eb0: 0000000000000000 0000000000000000 ................
3a1e2ec0: 0000000000000000 0000000000000000 ................
3a1e2ed0: 0000000000000000 0000000000000000 ................
3a1e2ee0: 0000000000000000 0000000000000000 ................
3a1e2ef0: 0000000000000000 0000000000000000 ................
3a1e2f00: 0000000000000000 0000000000000000 ................
3a1e2f10: 0000000000000000 0000000000000000 ................
3a1e2f20: 0000000000000000 0000000000000000 ................
3a1e2f30: 0000000000000000 0000000000000000 ................
3a1e2f40: 0000000000000000 0000000000000000 ................
3a1e2f50: 0000000000000000 0000000000000000 ................
3a1e2f60: 0000000000000000 0000000000000000 ................
3a1e2f70: 0000000000000000 0000000000000000 ................
3a1e2f80: 0000000000000000 0000000000000000 ................
3a1e2f90: 0000000000000000 0000000000000000 ................
3a1e2fa0: 0000000000000000 0000000000000000 ................
3a1e2fb0: 0000000000000000 0000000000000000 ................
3a1e2fc0: 0000000000000000 0000000000000000 ................
3a1e2fd0: 0000000000000000 0000000000000000 ................
3a1e2fe0: 0000000000000000 0000000000000000 ................
3a1e2ff0: 0000000000000000 0000000001a87067 ........gp......
crash> !ps -ef | grep sshd
root 1909 1 0 Jul11 ? 00:00:00 /usr/sbin/sshd
root 21390 21054 0 02:49 pts/0 00:00:00 sh -c ps -ef | grep sshd
root 21392 21390 0 02:49 pts/0 00:00:00 grep sshd
crash> set 1909
PID: 1909
COMMAND: "sshd"
TASK: ffff880037ba3540 [THREAD_INFO: ffff880078658000]
CPU: 0
STATE: TASK_INTERRUPTIBLE
crash> px ((struct task_struct*)0xffff880037ba3540)->mm->pgd
$9 = (pgd_t *) 0xffff8800374c5000
crash> px 0xffff8800374c5000-0xffff880000000000
$10 = 0x374c5000
crash> rd -p 0x374c5000 512 //查看进程sshd的pgd表
374c5000: 0000000000000000 0000000000000000 ................
374c5010: 0000000000000000 0000000000000000 ................
374c5020: 0000000000000000 0000000000000000 ................
374c5030: 0000000000000000 0000000000000000 ................
374c5040: 0000000000000000 0000000000000000 ................
374c5050: 0000000000000000 0000000000000000 ................
374c5060: 0000000000000000 0000000000000000 ................
374c5070: 0000000000000000 0000000000000000 ................
374c5080: 0000000000000000 0000000000000000 ................
374c5090: 0000000000000000 0000000000000000 ................
374c50a0: 0000000000000000 0000000000000000 ................
374c50b0: 0000000000000000 0000000000000000 ................
374c50c0: 0000000000000000 0000000000000000 ................
374c50d0: 0000000000000000 0000000000000000 ................
374c50e0: 0000000000000000 0000000000000000 ................
374c50f0: 0000000000000000 0000000000000000 ................
374c5100: 0000000000000000 0000000000000000 ................
374c5110: 0000000000000000 0000000000000000 ................
374c5120: 0000000000000000 0000000000000000 ................
374c5130: 0000000000000000 0000000000000000 ................
374c5140: 0000000000000000 0000000000000000 ................
374c5150: 0000000000000000 0000000000000000 ................
374c5160: 0000000000000000 0000000000000000 ................
374c5170: 0000000000000000 0000000000000000 ................
374c5180: 0000000000000000 0000000000000000 ................
374c5190: 0000000000000000 0000000000000000 ................
374c51a0: 0000000000000000 0000000000000000 ................
374c51b0: 0000000000000000 0000000000000000 ................
374c51c0: 0000000000000000 0000000000000000 ................
374c51d0: 0000000000000000 0000000000000000 ................
374c51e0: 0000000000000000 0000000000000000 ................
374c51f0: 0000000000000000 0000000000000000 ................
374c5200: 0000000000000000 0000000000000000 ................
374c5210: 0000000000000000 0000000000000000 ................
374c5220: 0000000000000000 0000000000000000 ................
374c5230: 0000000000000000 0000000000000000 ................
374c5240: 0000000000000000 0000000000000000 ................
374c5250: 0000000000000000 0000000000000000 ................
374c5260: 0000000000000000 0000000000000000 ................
374c5270: 0000000000000000 0000000000000000 ................
374c5280: 0000000000000000 0000000000000000 ................
374c5290: 0000000000000000 0000000000000000 ................
374c52a0: 0000000000000000 0000000000000000 ................
374c52b0: 0000000000000000 0000000000000000 ................
374c52c0: 0000000000000000 0000000000000000 ................
374c52d0: 0000000000000000 0000000000000000 ................
374c52e0: 0000000000000000 0000000000000000 ................
374c52f0: 0000000000000000 0000000000000000 ................
374c5300: 0000000000000000 0000000000000000 ................
374c5310: 0000000000000000 0000000000000000 ................
374c5320: 0000000000000000 0000000000000000 ................
374c5330: 0000000000000000 0000000000000000 ................
374c5340: 0000000000000000 0000000000000000 ................
374c5350: 0000000000000000 0000000000000000 ................
374c5360: 0000000000000000 0000000000000000 ................
374c5370: 0000000000000000 0000000000000000 ................
374c5380: 0000000000000000 0000000000000000 ................
374c5390: 0000000000000000 0000000000000000 ................
374c53a0: 0000000000000000 0000000000000000 ................
374c53b0: 0000000000000000 0000000000000000 ................
374c53c0: 0000000000000000 0000000000000000 ................
374c53d0: 0000000000000000 0000000000000000 ................
374c53e0: 0000000000000000 0000000000000000 ................
374c53f0: 0000000000000000 0000000000000000 ................
374c5400: 0000000000000000 0000000000000000 ................
374c5410: 0000000000000000 0000000000000000 ................
374c5420: 0000000000000000 0000000000000000 ................
374c5430: 0000000000000000 0000000000000000 ................
374c5440: 0000000000000000 0000000000000000 ................
374c5450: 0000000000000000 0000000000000000 ................
374c5460: 0000000000000000 0000000000000000 ................
374c5470: 0000000000000000 0000000000000000 ................
374c5480: 0000000000000000 0000000000000000 ................
374c5490: 0000000000000000 0000000000000000 ................
374c54a0: 0000000000000000 0000000000000000 ................
374c54b0: 0000000000000000 0000000000000000 ................
374c54c0: 0000000000000000 0000000000000000 ................
374c54d0: 0000000000000000 0000000000000000 ................
374c54e0: 0000000000000000 0000000000000000 ................
374c54f0: 0000000000000000 0000000000000000 ................
374c5500: 0000000000000000 0000000000000000 ................
374c5510: 0000000000000000 0000000000000000 ................
374c5520: 0000000000000000 0000000000000000 ................
374c5530: 0000000000000000 0000000000000000 ................
374c5540: 0000000000000000 0000000000000000 ................
374c5550: 0000000000000000 0000000000000000 ................
374c5560: 0000000000000000 0000000000000000 ................
374c5570: 0000000000000000 0000000000000000 ................
374c5580: 0000000000000000 0000000000000000 ................
374c5590: 0000000000000000 0000000000000000 ................
374c55a0: 0000000000000000 0000000000000000 ................
374c55b0: 0000000000000000 0000000000000000 ................
374c55c0: 0000000000000000 0000000000000000 ................
374c55d0: 0000000000000000 0000000000000000 ................
374c55e0: 0000000000000000 0000000000000000 ................
374c55f0: 0000000000000000 0000000000000000 ................
374c5600: 0000000000000000 0000000000000000 ................
374c5610: 0000000000000000 0000000000000000 ................
374c5620: 0000000000000000 0000000000000000 ................
374c5630: 0000000000000000 0000000000000000 ................
374c5640: 0000000000000000 0000000000000000 ................
374c5650: 0000000000000000 0000000000000000 ................
374c5660: 0000000000000000 0000000000000000 ................
374c5670: 0000000000000000 0000000000000000 ................
374c5680: 0000000000000000 0000000000000000 ................
374c5690: 0000000000000000 0000000000000000 ................
374c56a0: 0000000000000000 0000000000000000 ................
374c56b0: 0000000000000000 0000000000000000 ................
374c56c0: 0000000000000000 0000000000000000 ................
374c56d0: 0000000000000000 0000000000000000 ................
374c56e0: 0000000000000000 0000000000000000 ................
374c56f0: 0000000000000000 0000000000000000 ................
374c5700: 0000000000000000 0000000000000000 ................
374c5710: 0000000000000000 0000000000000000 ................
374c5720: 0000000000000000 0000000000000000 ................
374c5730: 0000000000000000 0000000000000000 ................
374c5740: 0000000000000000 0000000000000000 ................
374c5750: 0000000000000000 0000000000000000 ................
374c5760: 0000000000000000 0000000000000000 ................
374c5770: 0000000000000000 0000000000000000 ................
374c5780: 0000000000000000 0000000000000000 ................
374c5790: 0000000000000000 0000000000000000 ................
374c57a0: 0000000000000000 0000000000000000 ................
374c57b0: 0000000000000000 0000000000000000 ................
374c57c0: 0000000000000000 0000000000000000 ................
374c57d0: 0000000000000000 0000000000000000 ................
374c57e0: 0000000000000000 0000000000000000 ................
374c57f0: 0000000000000000 000000007865e067 ........g.ex....
374c5800: 0000000000000000 0000000000000000 ................
374c5810: 0000000000000000 0000000000000000 ................
374c5820: 0000000000000000 0000000000000000 ................
374c5830: 0000000000000000 0000000000000000 ................
374c5840: 0000000000000000 0000000000000000 ................
374c5850: 0000000000000000 0000000000000000 ................
374c5860: 0000000000000000 0000000000000000 ................
374c5870: 0000000000000000 0000000000000000 ................
374c5880: 0000000001a86063 0000000000000000 c`..............
374c5890: 0000000000000000 0000000000000000 ................
374c58a0: 0000000000000000 0000000000000000 ................
374c58b0: 0000000000000000 0000000000000000 ................
374c58c0: 0000000000000000 0000000000000000 ................
374c58d0: 0000000000000000 0000000000000000 ................
374c58e0: 0000000000000000 0000000000000000 ................
374c58f0: 0000000000000000 0000000000000000 ................
374c5900: 0000000000000000 0000000000000000 ................
374c5910: 0000000000000000 0000000000000000 ................
374c5920: 0000000000000000 0000000000000000 ................
374c5930: 0000000000000000 0000000000000000 ................
374c5940: 0000000000000000 0000000000000000 ................
374c5950: 0000000000000000 0000000000000000 ................
374c5960: 0000000000000000 0000000000000000 ................
374c5970: 0000000000000000 0000000000000000 ................
374c5980: 0000000000000000 0000000000000000 ................
374c5990: 0000000000000000 0000000000000000 ................
374c59a0: 0000000000000000 0000000000000000 ................
374c59b0: 0000000000000000 0000000000000000 ................
374c59c0: 0000000000000000 0000000000000000 ................
374c59d0: 0000000000000000 0000000000000000 ................
374c59e0: 0000000000000000 0000000000000000 ................
374c59f0: 0000000000000000 0000000000000000 ................
374c5a00: 0000000000000000 0000000000000000 ................
374c5a10: 0000000000000000 0000000000000000 ................
374c5a20: 0000000000000000 0000000000000000 ................
374c5a30: 0000000000000000 0000000000000000 ................
374c5a40: 0000000000000000 0000000000000000 ................
374c5a50: 0000000000000000 0000000000000000 ................
374c5a60: 0000000000000000 0000000000000000 ................
374c5a70: 0000000000000000 0000000000000000 ................
374c5a80: 0000000000000000 0000000000000000 ................
374c5a90: 0000000000000000 0000000000000000 ................
374c5aa0: 0000000000000000 0000000000000000 ................
374c5ab0: 0000000000000000 0000000000000000 ................
374c5ac0: 0000000000000000 0000000000000000 ................
374c5ad0: 0000000000000000 0000000000000000 ................
374c5ae0: 0000000000000000 0000000000000000 ................
374c5af0: 0000000000000000 0000000000000000 ................
374c5b00: 0000000000000000 0000000000000000 ................
374c5b10: 0000000000000000 0000000000000000 ................
374c5b20: 0000000000000000 0000000000000000 ................
374c5b30: 0000000000000000 0000000000000000 ................
374c5b40: 0000000000000000 0000000000000000 ................
374c5b50: 0000000000000000 0000000000000000 ................
374c5b60: 0000000000000000 0000000000000000 ................
374c5b70: 0000000000000000 0000000000000000 ................
374c5b80: 0000000000000000 0000000000000000 ................
374c5b90: 0000000000000000 0000000000000000 ................
374c5ba0: 0000000000000000 0000000000000000 ................
374c5bb0: 0000000000000000 0000000000000000 ................
374c5bc0: 0000000000000000 0000000000000000 ................
374c5bd0: 0000000000000000 0000000000000000 ................
374c5be0: 0000000000000000 0000000000000000 ................
374c5bf0: 0000000000000000 0000000000000000 ................
374c5c00: 0000000000000000 0000000000000000 ................
374c5c10: 0000000000000000 0000000000000000 ................
374c5c20: 0000000000000000 0000000000000000 ................
374c5c30: 0000000000000000 0000000000000000 ................
374c5c40: 0000000000000000 0000000000000000 ................
374c5c50: 0000000000000000 0000000000000000 ................
374c5c60: 0000000000000000 0000000000000000 ................
374c5c70: 0000000000000000 0000000000000000 ................
374c5c80: 0000000000000000 0000000000000000 ...............
374c5c90: 000000007fac5067 0000000000000000 gP..............
374c5ca0: 0000000000000000 0000000000000000 ................
374c5cb0: 0000000000000000 0000000000000000 ................
374c5cc0: 0000000000000000 0000000000000000 ................
374c5cd0: 0000000000000000 0000000000000000 ................
374c5ce0: 0000000000000000 0000000000000000 ................
374c5cf0: 0000000000000000 0000000000000000 ................
374c5d00: 0000000000000000 0000000000000000 ................
374c5d10: 0000000000000000 0000000000000000 ................
374c5d20: 0000000000000000 0000000000000000 ................
374c5d30: 0000000000000000 0000000000000000 ................
374c5d40: 0000000000000000 0000000000000000 ................
374c5d50: 0000000000000000 0000000000000000 ................
374c5d60: 0000000000000000 0000000000000000 ................
374c5d70: 0000000000000000 0000000000000000 ................
374c5d80: 0000000000000000 0000000000000000 ................
374c5d90: 0000000000000000 0000000000000000 ................
374c5da0: 0000000000000000 0000000000000000 ................
374c5db0: 0000000000000000 0000000000000000 ................
374c5dc0: 0000000000000000 0000000000000000 ................
374c5dd0: 0000000000000000 0000000000000000 ................
374c5de0: 0000000000000000 0000000000000000 ................
374c5df0: 0000000000000000 0000000000000000 ................
374c5e00: 0000000000000000 0000000000000000 ................
374c5e10: 0000000000000000 0000000000000000 ................
374c5e20: 0000000000000000 0000000000000000 ................
374c5e30: 0000000000000000 0000000000000000 ................
374c5e40: 0000000000000000 0000000000000000 ................
374c5e50: 0000000000000000 0000000000000000 ................
374c5e60: 0000000000000000 0000000000000000 ................
374c5e70: 0000000000000000 0000000000000000 ................
374c5e80: 0000000000000000 0000000037871067 ........g..7....
374c5e90: 0000000000000000 0000000000000000 ................
374c5ea0: 0000000002423067 0000000000000000 g0B.............
374c5eb0: 0000000000000000 0000000000000000 ................
374c5ec0: 0000000000000000 0000000000000000 ................
374c5ed0: 0000000000000000 0000000000000000 ................
374c5ee0: 0000000000000000 0000000000000000 ................
374c5ef0: 0000000000000000 0000000000000000 ................
374c5f00: 0000000000000000 0000000000000000 ................
374c5f10: 0000000000000000 0000000000000000 ................
374c5f20: 0000000000000000 0000000000000000 ................
374c5f30: 0000000000000000 0000000000000000 ................
374c5f40: 0000000000000000 0000000000000000 ................
374c5f50: 0000000000000000 0000000000000000 ................
374c5f60: 0000000000000000 0000000000000000 ................
374c5f70: 0000000000000000 0000000000000000 ................
374c5f80: 0000000000000000 0000000000000000 ................
374c5f90: 0000000000000000 0000000000000000 ................
374c5fa0: 0000000000000000 0000000000000000 ................
374c5fb0: 0000000000000000 0000000000000000 ................
374c5fc0: 0000000000000000 0000000000000000 ................
374c5fd0: 0000000000000000 0000000000000000 ................
374c5fe0: 0000000000000000 0000000000000000 ................
374c5ff0: 0000000000000000 0000000001a87067 ........gp......
1、比较pagetable_test与sshd的pgd表，发现在0x110（0x374c5880）项之后的pgd表项相同，而0x110表项正好是内核起始地址0xffff880000000000，说明所有进程内核空间的页表是共享的。
2、pgd表中0x110（0x374c5880）完全映射本计算机物理内存，本机物理内存2G,占PUD两项。
3、0x192（0x374c5c90）项是映射vmalloc/ioremap区
4、0x1D4(0x374c5ea0)项是映射virtual 内存映射区
5、0x1ff(0x374c5ff0)项是内核代码映射区及模块映射区
二、内核页表的同步
所有进程共享内核页表，当某一进程由于某一操作更新内核页表，其他进程如何同步内核页表？原来，更新内核页表是只更新全局内核页表（init_mm.pgd），当其他进程发生缺页一次时，内核判断出是内核页表缺页，如果全局内核页表中已经映射内存，直接拷贝即可，否则进行页面调度，并更新内核页表。
crash> px init_mm.pgd //内核全局页表
$11 = (pgd_t *) 0xffffffff81a85000 //pgd存在于内核代码中，映射到0xffffffff80000000起始的内核区域
crash> rd 0xffffffff81a85000 512
ffffffff81a85000: 0000000000000000 0000000000000000 ................
ffffffff81a85010: 0000000000000000 0000000000000000 ................
ffffffff81a85020: 0000000000000000 0000000000000000 ................
ffffffff81a85030: 0000000000000000 0000000000000000 ................
ffffffff81a85040: 0000000000000000 0000000000000000 ................
ffffffff81a85050: 0000000000000000 0000000000000000 ................
ffffffff81a85060: 0000000000000000 0000000000000000 ................
ffffffff81a85070: 0000000000000000 0000000000000000 ................
ffffffff81a85080: 0000000000000000 0000000000000000 ................
ffffffff81a85090: 0000000000000000 0000000000000000 ................
ffffffff81a850a0: 0000000000000000 0000000000000000 ................
ffffffff81a850b0: 0000000000000000 0000000000000000 ................
ffffffff81a850c0: 0000000000000000 0000000000000000 ................
ffffffff81a850d0: 0000000000000000 0000000000000000 ................
ffffffff81a850e0: 0000000000000000 0000000000000000 ................
ffffffff81a850f0: 0000000000000000 0000000000000000 ................
ffffffff81a85100: 0000000000000000 0000000000000000 ................
ffffffff81a85110: 0000000000000000 0000000000000000 ................
ffffffff81a85120: 0000000000000000 0000000000000000 ................
ffffffff81a85130: 0000000000000000 0000000000000000 ................
ffffffff81a85140: 0000000000000000 0000000000000000 ................
ffffffff81a85150: 0000000000000000 0000000000000000 ................
ffffffff81a85160: 0000000000000000 0000000000000000 ................
ffffffff81a85170: 0000000000000000 0000000000000000 ................
ffffffff81a85180: 0000000000000000 0000000000000000 ................
ffffffff81a85190: 0000000000000000 0000000000000000 ................
ffffffff81a851a0: 0000000000000000 0000000000000000 ................
ffffffff81a851b0: 0000000000000000 0000000000000000 ................
ffffffff81a851c0: 0000000000000000 0000000000000000 ................
ffffffff81a851d0: 0000000000000000 0000000000000000 ................
ffffffff81a851e0: 0000000000000000 0000000000000000 ................
ffffffff81a851f0: 0000000000000000 0000000000000000 ................
ffffffff81a85200: 0000000000000000 0000000000000000 ................
ffffffff81a85210: 0000000000000000 0000000000000000 ................
ffffffff81a85220: 0000000000000000 0000000000000000 ................
ffffffff81a85230: 0000000000000000 0000000000000000 ................
ffffffff81a85240: 0000000000000000 0000000000000000 ................
ffffffff81a85250: 0000000000000000 0000000000000000 ................
ffffffff81a85260: 0000000000000000 0000000000000000 ................
ffffffff81a85270: 0000000000000000 0000000000000000 ................
ffffffff81a85280: 0000000000000000 0000000000000000 ................
ffffffff81a85290: 0000000000000000 0000000000000000 ................
ffffffff81a852a0: 0000000000000000 0000000000000000 ................
ffffffff81a852b0: 0000000000000000 0000000000000000 ................
ffffffff81a852c0: 0000000000000000 0000000000000000 ................
ffffffff81a852d0: 0000000000000000 0000000000000000 ................
ffffffff81a852e0: 0000000000000000 0000000000000000 ................
ffffffff81a852f0: 0000000000000000 0000000000000000 ................
ffffffff81a85300: 0000000000000000 0000000000000000 ................
ffffffff81a85310: 0000000000000000 0000000000000000 ................
ffffffff81a85320: 0000000000000000 0000000000000000 ................
ffffffff81a85330: 0000000000000000 0000000000000000 ................
ffffffff81a85340: 0000000000000000 0000000000000000 ................
ffffffff81a85350: 0000000000000000 0000000000000000 ................
ffffffff81a85360: 0000000000000000 0000000000000000 ................
ffffffff81a85370: 0000000000000000 0000000000000000 ................
ffffffff81a85380: 0000000000000000 0000000000000000 ................
ffffffff81a85390: 0000000000000000 0000000000000000 ................
ffffffff81a853a0: 0000000000000000 0000000000000000 ................
ffffffff81a853b0: 0000000000000000 0000000000000000 ................
ffffffff81a853c0: 0000000000000000 0000000000000000 ................
ffffffff81a853d0: 0000000000000000 0000000000000000 ................
ffffffff81a853e0: 0000000000000000 0000000000000000 ................
ffffffff81a853f0: 0000000000000000 0000000000000000 ................
ffffffff81a85400: 0000000000000000 0000000000000000 ................
ffffffff81a85410: 0000000000000000 0000000000000000 ................
ffffffff81a85420: 0000000000000000 0000000000000000 ................
ffffffff81a85430: 0000000000000000 0000000000000000 ................
ffffffff81a85440: 0000000000000000 0000000000000000 ................
ffffffff81a85450: 0000000000000000 0000000000000000 ................
ffffffff81a85460: 0000000000000000 0000000000000000 ................
ffffffff81a85470: 0000000000000000 0000000000000000 ................
ffffffff81a85480: 0000000000000000 0000000000000000 ................
ffffffff81a85490: 0000000000000000 0000000000000000 ................
ffffffff81a854a0: 0000000000000000 0000000000000000 ................
ffffffff81a854b0: 0000000000000000 0000000000000000 ................
ffffffff81a854c0: 0000000000000000 0000000000000000 ................
ffffffff81a854d0: 0000000000000000 0000000000000000 ................
ffffffff81a854e0: 0000000000000000 0000000000000000 ................
ffffffff81a854f0: 0000000000000000 0000000000000000 ................
ffffffff81a85500: 0000000000000000 0000000000000000 ................
ffffffff81a85510: 0000000000000000 0000000000000000 ................
ffffffff81a85520: 0000000000000000 0000000000000000 ................
ffffffff81a85530: 0000000000000000 0000000000000000 ................
ffffffff81a85540: 0000000000000000 0000000000000000 ................
ffffffff81a85550: 0000000000000000 0000000000000000 ................
ffffffff81a85560: 0000000000000000 0000000000000000 ................
ffffffff81a85570: 0000000000000000 0000000000000000 ................
ffffffff81a85580: 0000000000000000 0000000000000000 ................
ffffffff81a85590: 0000000000000000 0000000000000000 ................
ffffffff81a855a0: 0000000000000000 0000000000000000 ................
ffffffff81a855b0: 0000000000000000 0000000000000000 ................
ffffffff81a855c0: 0000000000000000 0000000000000000 ................
ffffffff81a855d0: 0000000000000000 0000000000000000 ................
ffffffff81a855e0: 0000000000000000 0000000000000000 ................
ffffffff81a855f0: 0000000000000000 0000000000000000 ................
ffffffff81a85600: 0000000000000000 0000000000000000 ................
ffffffff81a85610: 0000000000000000 0000000000000000 ................
ffffffff81a85620: 0000000000000000 0000000000000000 ................
ffffffff81a85630: 0000000000000000 0000000000000000 ................
ffffffff81a85640: 0000000000000000 0000000000000000 ................
ffffffff81a85650: 0000000000000000 0000000000000000 ................
ffffffff81a85660: 0000000000000000 0000000000000000 ................
ffffffff81a85670: 0000000000000000 0000000000000000 ................
ffffffff81a85680: 0000000000000000 0000000000000000 ................
ffffffff81a85690: 0000000000000000 0000000000000000 ................
ffffffff81a856a0: 0000000000000000 0000000000000000 ................
ffffffff81a856b0: 0000000000000000 0000000000000000 ................
ffffffff81a856c0: 0000000000000000 0000000000000000 ................
ffffffff81a856d0: 0000000000000000 0000000000000000 ................
ffffffff81a856e0: 0000000000000000 0000000000000000 ................
ffffffff81a856f0: 0000000000000000 0000000000000000 ................
ffffffff81a85700: 0000000000000000 0000000000000000 ................
ffffffff81a85710: 0000000000000000 0000000000000000 ................
ffffffff81a85720: 0000000000000000 0000000000000000 ................
ffffffff81a85730: 0000000000000000 0000000000000000 ................
ffffffff81a85740: 0000000000000000 0000000000000000 ................
ffffffff81a85750: 0000000000000000 0000000000000000 ................
ffffffff81a85760: 0000000000000000 0000000000000000 ................
ffffffff81a85770: 0000000000000000 0000000000000000 ................
ffffffff81a85780: 0000000000000000 0000000000000000 ................
ffffffff81a85790: 0000000000000000 0000000000000000 ................
ffffffff81a857a0: 0000000000000000 0000000000000000 ................
ffffffff81a857b0: 0000000000000000 0000000000000000 ................
ffffffff81a857c0: 0000000000000000 0000000000000000 ................
ffffffff81a857d0: 0000000000000000 0000000000000000 ................
ffffffff81a857e0: 0000000000000000 0000000000000000 ................
ffffffff81a857f0: 0000000000000000 0000000000000000 ................
ffffffff81a85800: 0000000000000000 0000000000000000 ................
ffffffff81a85810: 0000000000000000 0000000000000000 ................
ffffffff81a85820: 0000000000000000 0000000000000000 ................
ffffffff81a85830: 0000000000000000 0000000000000000 ................
ffffffff81a85840: 0000000000000000 0000000000000000 ................
ffffffff81a85850: 0000000000000000 0000000000000000 ................
ffffffff81a85860: 0000000000000000 0000000000000000 ................
ffffffff81a85870: 0000000000000000 0000000000000000 ................
ffffffff81a85880: 0000000001a86063 0000000000000000 c`..............
ffffffff81a85890: 0000000000000000 0000000000000000 ................
ffffffff81a858a0: 0000000000000000 0000000000000000 ................
ffffffff81a858b0: 0000000000000000 0000000000000000 ................
ffffffff81a858c0: 0000000000000000 0000000000000000 ................
ffffffff81a858d0: 0000000000000000 0000000000000000 ................
ffffffff81a858e0: 0000000000000000 0000000000000000 ................
ffffffff81a858f0: 0000000000000000 0000000000000000 ................
ffffffff81a85900: 0000000000000000 0000000000000000 ................
ffffffff81a85910: 0000000000000000 0000000000000000 ................
ffffffff81a85920: 0000000000000000 0000000000000000 ................
ffffffff81a85930: 0000000000000000 0000000000000000 ................
ffffffff81a85940: 0000000000000000 0000000000000000 ................
ffffffff81a85950: 0000000000000000 0000000000000000 ................
ffffffff81a85960: 0000000000000000 0000000000000000 ................
ffffffff81a85970: 0000000000000000 0000000000000000 ................
ffffffff81a85980: 0000000000000000 0000000000000000 ................
ffffffff81a85990: 0000000000000000 0000000000000000 ................
ffffffff81a859a0: 0000000000000000 0000000000000000 ................
ffffffff81a859b0: 0000000000000000 0000000000000000 ................
ffffffff81a859c0: 0000000000000000 0000000000000000 ................
ffffffff81a859d0: 0000000000000000 0000000000000000 ................
ffffffff81a859e0: 0000000000000000 0000000000000000 ................
ffffffff81a859f0: 0000000000000000 0000000000000000 ................
ffffffff81a85a00: 0000000000000000 0000000000000000 ................
ffffffff81a85a10: 0000000000000000 0000000000000000 ................
ffffffff81a85a20: 0000000000000000 0000000000000000 ................
ffffffff81a85a30: 0000000000000000 0000000000000000 ................
ffffffff81a85a40: 0000000000000000 0000000000000000 ................
ffffffff81a85a50: 0000000000000000 0000000000000000 ................
ffffffff81a85a60: 0000000000000000 0000000000000000 ................
ffffffff81a85a70: 0000000000000000 0000000000000000 ................
ffffffff81a85a80: 0000000000000000 0000000000000000 ................
ffffffff81a85a90: 0000000000000000 0000000000000000 ................
ffffffff81a85aa0: 0000000000000000 0000000000000000 ................
ffffffff81a85ab0: 0000000000000000 0000000000000000 ................
ffffffff81a85ac0: 0000000000000000 0000000000000000 ................
ffffffff81a85ad0: 0000000000000000 0000000000000000 ................
ffffffff81a85ae0: 0000000000000000 0000000000000000 ................
ffffffff81a85af0: 0000000000000000 0000000000000000 ................
ffffffff81a85b00: 0000000000000000 0000000000000000 ................
ffffffff81a85b10: 0000000000000000 0000000000000000 ................
ffffffff81a85b20: 0000000000000000 0000000000000000 ................
ffffffff81a85b30: 0000000000000000 0000000000000000 ................
ffffffff81a85b40: 0000000000000000 0000000000000000 ................
ffffffff81a85b50: 0000000000000000 0000000000000000 ................
ffffffff81a85b60: 0000000000000000 0000000000000000 ................
ffffffff81a85b70: 0000000000000000 0000000000000000 ................
ffffffff81a85b80: 0000000000000000 0000000000000000 ................
ffffffff81a85b90: 0000000000000000 0000000000000000 ................
ffffffff81a85ba0: 0000000000000000 0000000000000000 ................
ffffffff81a85bb0: 0000000000000000 0000000000000000 ................
ffffffff81a85bc0: 0000000000000000 0000000000000000 ................
ffffffff81a85bd0: 0000000000000000 0000000000000000 ................
ffffffff81a85be0: 0000000000000000 0000000000000000 ................
ffffffff81a85bf0: 0000000000000000 0000000000000000 ................
ffffffff81a85c00: 0000000000000000 0000000000000000 ................
ffffffff81a85c10: 0000000000000000 0000000000000000 ................
ffffffff81a85c20: 0000000000000000 0000000000000000 ................
ffffffff81a85c30: 0000000000000000 0000000000000000 ................
ffffffff81a85c40: 0000000000000000 0000000000000000 ................
ffffffff81a85c50: 0000000000000000 0000000000000000 ................
ffffffff81a85c60: 0000000000000000 0000000000000000 ................
ffffffff81a85c70: 0000000000000000 0000000000000000 ................
ffffffff81a85c80: 0000000000000000 0000000000000000 ................
ffffffff81a85c90: 000000007fac5067 0000000000000000 gP..............
ffffffff81a85ca0: 0000000000000000 0000000000000000 ................
ffffffff81a85cb0: 0000000000000000 0000000000000000 ................
ffffffff81a85cc0: 0000000000000000 0000000000000000 ................
ffffffff81a85cd0: 0000000000000000 0000000000000000 ................
ffffffff81a85ce0: 0000000000000000 0000000000000000 ................
ffffffff81a85cf0: 0000000000000000 0000000000000000 ................
ffffffff81a85d00: 0000000000000000 0000000000000000 ................
ffffffff81a85d10: 0000000000000000 0000000000000000 ................
ffffffff81a85d20: 0000000000000000 0000000000000000 ................
ffffffff81a85d30: 0000000000000000 0000000000000000 ................
ffffffff81a85d40: 0000000000000000 0000000000000000 ................
ffffffff81a85d50: 0000000000000000 0000000000000000 ................
ffffffff81a85d60: 0000000000000000 0000000000000000 ................
ffffffff81a85d70: 0000000000000000 0000000000000000 ................
ffffffff81a85d80: 0000000000000000 0000000000000000 ................
ffffffff81a85d90: 0000000000000000 0000000000000000 ................
ffffffff81a85da0: 0000000000000000 0000000000000000 ................
ffffffff81a85db0: 0000000000000000 0000000000000000 ................
ffffffff81a85dc0: 0000000000000000 0000000000000000 ................
ffffffff81a85dd0: 0000000000000000 0000000000000000 ................
ffffffff81a85de0: 0000000000000000 0000000000000000 ................
ffffffff81a85df0: 0000000000000000 0000000000000000 ................
ffffffff81a85e00: 0000000000000000 0000000000000000 ................
ffffffff81a85e10: 0000000000000000 0000000000000000 ................
ffffffff81a85e20: 0000000000000000 0000000000000000 ................
ffffffff81a85e30: 0000000000000000 0000000000000000 ................
ffffffff81a85e40: 0000000000000000 0000000000000000 ................
ffffffff81a85e50: 0000000000000000 0000000000000000 ................
ffffffff81a85e60: 0000000000000000 0000000000000000 ................
ffffffff81a85e70: 0000000000000000 0000000000000000 ................
ffffffff81a85e80: 0000000000000000 0000000037871067 ........g..7....
ffffffff81a85e90: 0000000000000000 0000000000000000 ................
ffffffff81a85ea0: 0000000002423067 0000000000000000 g0B.............
ffffffff81a85eb0: 0000000000000000 0000000000000000 ................
ffffffff81a85ec0: 0000000000000000 0000000000000000 ................
ffffffff81a85ed0: 0000000000000000 0000000000000000 ................
ffffffff81a85ee0: 0000000000000000 0000000000000000 ................
ffffffff81a85ef0: 0000000000000000 0000000000000000 ................
ffffffff81a85f00: 0000000000000000 0000000000000000 ................
ffffffff81a85f10: 0000000000000000 0000000000000000 ................
ffffffff81a85f20: 0000000000000000 0000000000000000 ................
ffffffff81a85f30: 0000000000000000 0000000000000000 ................
ffffffff81a85f40: 0000000000000000 0000000000000000 ................
ffffffff81a85f50: 0000000000000000 0000000000000000 ................
ffffffff81a85f60: 0000000000000000 0000000000000000 ................
ffffffff81a85f70: 0000000000000000 0000000000000000 ................
ffffffff81a85f80: 0000000000000000 0000000000000000 ................
ffffffff81a85f90: 0000000000000000 0000000000000000 ................
ffffffff81a85fa0: 0000000000000000 0000000000000000 ................
ffffffff81a85fb0: 0000000000000000 0000000000000000 ................
ffffffff81a85fc0: 0000000000000000 0000000000000000 ................
ffffffff81a85fd0: 0000000000000000 0000000000000000 ................
ffffffff81a85fe0: 0000000000000000 0000000000000000 ................
ffffffff81a85ff0: 0000000000000000 0000000001a87067 ........gp......
模拟全局内核页表与进程内核页表不一致比较困难，全局内核页表中每一项代表512GB的数据，增加全局内核页表的页表项比较困难。
浙公网安备 33010602011771号