[Xen-users] xm mem-set Domain-0 box went poof

[Brandon Lamb <brandonlamb@xxxxxxxxx>]

On a fresh reboot

free:
       total   used    free shared buffers cached
Mem: 3371340 448156 2923184      0    5328  77840

----------

top:
Mem:   3371340k total,   449044k used,  2922296k free,     5344k buffers

----------

xentop - 01:44:00   Xen 3.4.3-rc4-pre
1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 4160828k total, 4022996k used, 137832k free    CPUs: 4 @ 2308MHz
      NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k)
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR
SSID
  Domain-0 -----r        109    2.2    3965032   95.3   no limit       n/a     4

----------

xm mem-set Domain-0 512

xentop showed ~1G memory (26% memory), then right after this i tried

xm mem-set Domain-0 192

... box died with caps and scroll lock flashing.

I had dom0_mem=512, dom0-min-mem=192

xen-3.4-testing-hg and xen/master kernel from jeremy's git repo

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