On 08/02/2013 13:39, Peter Grehan wrote:
  Ah - that actually won't work. There has to be space for PCI MMIO
decode below 4GB, so it's usually best to use up to say 2 or 3GB of RAM
below the 4GB mark, leaving 1GB for PCI decode, and then put the
remainder of your memory above 4G e.g. for 4GB total RAM, and using 2GB
below 4G

  -m 2048 -M 2048

  and an example 8G system:

  -m 2048 -M 6144

  We should really error out on values too large for the '-m' parameter.


Thanks for that Peter :)

Starting the VM with -m 2048 -M 14336 worked fine.

FreeBSD 10.0-CURRENT #0 r246446: Thu Feb  7 12:21:37 UTC 2013
    :/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.2 (tags/RELEASE_32/final 170710) 20121221
WARNING: WITNESS option enabled, expect reduced performance.
CPU: Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz (3399.75-MHz K8-class CPU)
Origin = "GenuineIntel" Id = 0x306a9 Family = 0x6 Model = 0x3a Stepping = 9

Features=0x8fa3ab7f<FPU,VME,DE,PSE,TSC,MSR,PAE,CX8,APIC,SEP,PGE,CMOV,PAT,PSE36,DTS,MMX,FXSR,SSE,SSE2,SS,PBE>

Features2=0xe3bae257<SSE3,PCLMULQDQ,DTES64,DS_CPL,SMX,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,F16C,RDRAND,HV>
  AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant
real memory  = 19327352832 (18432 MB)
avail memory = 16482443264 (15718 MB)

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