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在kunpeng920+4.19.36-vhulk1907.1.0.h529.eulerosv2r8.aarch64环境上配置crashkernel=1024M,high,在低端内存预留了256M。

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2020-01-09 11:18

[root@srmbuffer011165236051 127.0.0.1-2020.01.08-21:04:48]# uname -r
4.19.36-vhulk1907.1.0.h529.eulerosv2r8.aarch64
[root@srmbuffer011165236051 127.0.0.1-2020.01.08-21:04:48]# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.19.36-vhulk1907.1.0.h529.eulerosv2r8.aarch64 root=UUID=9c5dbd04-71b5-4326-a579-5334fff937dc ro softlockup_panic=1 panic=1 vga=0x317 nohz=off rd.shell=0 fsck.mode=auto fsck.repair=yes crashkernel=1024M,high
[root@srmbuffer011165236051 127.0.0.1-2020.01.08-21:04:48]# cat /proc/iomem | grep Crash
70000000-7fffffff : Crash kernel
202fc0000000-202fffffffff : Crash kernel

请问:在低端内存预留256M的作用是什么,当时遇到的具体问题是?我看patch没有推送到主线?

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luanshi created缺陷
small_leek set assignee to zhanghailiang
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XieXiuQi set assignee to XieXiuQi
Expand operation logs

这个特性就是为了让 kdump 支持 4G 以上内存,正在推主线,有兴趣的话,可以在主线参与测试和讨论,谢谢;-)

https://patchwork.kernel.org/cover/11308463/

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XieXiuQi set branch to openEuler-1.0
XieXiuQi changed issue state from 待办的 to 已完成

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