Hi all,

I found that the memory consumption increase about 5M since below commit on 
Qemu process.

commit 6731d864f80938e404dc3e5eb7f6b76b891e3e43
Author: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
Date:   Thu Jan 21 14:15:06 2016 +0000

    qom/cpu: Add MemoryRegion property
    
    Add a MemoryRegion property, which if set is used to construct
    the CPU's initial (default) AddressSpace.
    
    Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
    [PMM: code is moved from qom/cpu.c to exec.c to avoid having to
     make qom/cpu.o be a non-common object file; code to use the
     MemoryRegion and to default it to system_memory added.]
    Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
    Acked-by: Edgar E. Iglesias <edgar.igles...@xilinx.com>

The result before this commit:

linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
root     12658 17.2  0.0 375996 21412 pts/1    Sl+  12:53   0:00 
./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off 
-nodefaults

after the commit:
 
linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
root     23201 17.2  0.0 384196 25736 pts/1    Sl+  12:54   0:00 
./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off 
-nodefaults

I couldn't find any benefits on x86 platform (I'm not familiar with ARM), am I 
missing something?

And It works well if I revert this commit. Can I?

Thanks,
-Gonglei



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