I have Mint in my laptop,and it has 4G memory.I just install the PAE kernel.The OS is running normally.I can see the memory is totally distinguished by using command "free".Then I install the xen-hypervisor and reboot the computer.I can see the DOM0 with the command "xm",below is the output:
Name ID Mem VCPUs State Time(s)
Domain-0 0 3066 2 r----- 154.5
But I also found that there are only about 3G RAM distinguished by the kernel.
total used free shared buffers cached
Mem: 2926 955 1971 0 111 401
-/+ buffers/cache: 442 2483
Swap: 3906 0 3906
The kernel running now is
Can anyone tell me how did it come to this?Do I need to change the system to 64bit for using more than 4G RAM in the xen kernel? Thanks a lot!