linux/arch/mips/loongson64
zhanglianjie 6817c94443 MIPS: loongsoon64: Reserve memory below starting pfn to prevent Oops
The cause of the problem is as follows:
1. when cat /sys/devices/system/memory/memory0/valid_zones,
   test_pages_in_a_zone() will be called.
2. test_pages_in_a_zone() finds the zone according to stat_pfn = 0.
   The smallest pfn of the numa node in the mips architecture is 128,
   and the page corresponding to the previous 0~127 pfn is not
   initialized (page->flags is 0xFFFFFFFF)
3. The nid and zonenum obtained using page_zone(pfn_to_page(0)) are out
   of bounds in the corresponding array,
   &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)],
   access to the out-of-bounds zone member variables appear abnormal,
   resulting in Oops.
Therefore, it is necessary to keep the page between 0 and the minimum
pfn to prevent Oops from appearing.

Signed-off-by: zhanglianjie <zhanglianjie@uniontech.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-06-29 10:15:46 +02:00
..
Kconfig MIPS: Loongson64: Mark RS780 HPET as broken 2020-04-20 19:37:01 +02:00
Makefile MIPS: Loongson64: Remove unused sysconf members 2021-03-12 11:09:09 +01:00
Platform Kbuild updates for v5.12 2021-02-25 10:17:31 -08:00
boardinfo.c MIPS: Loongson64: Add /sys/firmware/lefi/boardinfo 2020-10-27 12:46:06 +01:00
cop2-ex.c MIPS: Loongson-3: Fix fp register access if MSA enabled 2020-09-22 13:07:22 +02:00
cpucfg-emul.c MIPS: Unify naming style of vendor CP0.Config6 bits 2020-07-08 11:15:53 +02:00
dma.c dma-direct: rename and cleanup __phys_to_dma 2020-09-11 09:14:43 +02:00
env.c MIPS: Loongson64: Remove a "set but not used" variable 2021-05-27 12:35:19 +02:00
hpet.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
init.c MIPS: loongson64: fix bug when PAGE_SIZE > 16KB 2021-03-25 10:48:42 +01:00
numa.c MIPS: loongsoon64: Reserve memory below starting pfn to prevent Oops 2021-06-29 10:15:46 +02:00
pm.c MIPS: Loongson64: Move files to the top-level directory 2019-11-01 14:31:28 -07:00
reset.c MIPS: Loongson64: Fix build error 'secondary_kexec_args' undeclared under !SMP 2021-05-11 22:21:21 +02:00
setup.c MIPS: Loongson64: Load built-in dtbs 2020-03-25 16:07:12 +01:00
smp.c MIPS: Loongson64: Make some functions static in smp.c 2021-06-01 11:17:01 +02:00
smp.h MIPS: Loongson64: Move files to the top-level directory 2019-11-01 14:31:28 -07:00
time.c MIPS: Loongson64: Add support for the Loongson-2K1000 to get cpu_clock_freq 2021-03-25 10:44:01 +01:00
vbios_quirk.c MIPS: Loongson64: Switch to generic PCI driver 2020-05-27 13:01:56 +02:00