Dear all：
New issue：
Guest BSOD and restart when using OVMF to boot and install windows8
64bit OS(which owns more than 4G memmory)。
My environment as below:
xen 4.5.0
qemu 2.2.1
I just git clone xen from git://xenbits.xen.org/xen.git. configure it and
parameters as below:
./configure --prefix=/usr/ --libdir=/usr/lib/ --enable-ovmf then make && make
install, after that I reboot my host OS(SuSE 11.3).
I write a cfg file win8.cfg as below:
builder = "hvm"
name = "win8"
memory = 2048
maxmem = 2048
vcpus = 4
bios = "ovmf"
boot = "d"
disk = [
'/test/Windows8-ReleasePreview-64bit-ChineseSimplified.iso,,hdc,cdrom','/test/win8.img,raw,xvda,rw'
] usb = 1 usbdevice="tablet"
vnc = 1
vnclisten = '9.61.1.3'
vncdisplay = 0
# xl create win8.cfg
after the command I use vnc client to connect guest, win8 guest works normally.
then I modify the memory size and change it to 8192MB, save and start win8
guest again.
after ovmf bios logo, windows8 logo appears, go on for a while, the guest stops
and restart, then stop （sometimes BSOD，but no error code on the screen) and
restart ....repeat the process
I tried some different memory sizes, the result is guest can work normally when
it has 4320MB memory at most, but it stop and restart when it has lager than
4320MB memory
Li Donglin
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