Description of problem:
 Different error info for memsave command (HMP and QMP)

Version-Release number of selected component (if applicable):
Host:
# uname -r 
3.10.0-57.el7.x86_64
qemu-kvm-rhev-1.5.3-20.el7

Guest:
Rhel7 
3.10.0-54.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Boot guest
(qemu) ? memsave
memsave addr size file -- save to disk virtual memory dump starting at 'addr' of size 'size'

2.Execute memsave  use HMP and QMP
(qemu) memsave 1 333333 lang
{"execute":"memsave","arguments":{"val":1,"size":333333,"filename":"lang-1"}}

#ls -lh lang*
-rw-r--r--. 1 root root 326K Dec  9 18:41 lang
-rw-r--r--. 1 root root 326K Dec  9 18:44 lang-1

3.Execute memsave  use HMP and QMP with other size

(qemu) memsave 1 3333333333333 fang
'memsave' has failed: integer is for 32-bit values--->error info
{"execute":"memsave","arguments":{"val":1,"size":3333333333333,"filename":"fang-1"}}

{"error": {"class": "GenericError", "desc": "An IO error has occurred"}}-->error info



Actual results:

After step 3,get different error info 

Expected results:

If execute the same commands,should give the same error info. 

Additional info:

1)Test "pmemsave" command have same problem

2)My CLI:
 /usr/libexec/qemu-kvm  -m 1G -smp 4,sockets=1,cores=4,thrmaxcpus=8  -device piix3-usb-uhci,id=usb -name rhel7   -device virtio-balloon-pci,id=balloon0  -spice port=5900,disable-ticketing  -vga qxl -global qxl-vga.vram_size=67108864  -global qxl-vga.revision=3 -device qxl,id=video1,vram_size=67108864,bus=pci.0,addr=0x5 -device qxl,id=video2,vram_size=67108864,bus=pci.0,addr=0x6 -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0   -monitor stdio   -netdev tap,id=hostnet0,script=/etc/ovs-ifup,downscript=/etc/ovs-ifdown -device e1000,netdev=hostnet0,id=virtio-netpci0,mac=54:52:1b:36:1a:01,addr=0x8  -drive file=/root/RHEL-Server-new.raw,if=none,media=disk,format=raw,rerror=stop,werror=stop,aio=native,id=drive-virtio-disk0 -device virtio-blk-pci,scsi=off,addr=0x9,drive=drive-virtio-disk0,id=disk0,bootindex=0  -qmp tcp:0:4444,server,nowait   -drive file=/root/RHEL-7.0-20131127.1-Server-x86_64-boot.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0  -chardev socket,id=test,path=/tmp/qmp-monitor,server,nowait -mon chardev=test,mode=control