On Thu, Apr 16, 2015 at 10:08:48PM +0800, penghao122@sina.com wrote:
I configure ram to 4GB,then the win7-64bit vm can boot successfully using unmodified seabios. And I find that the vm can boot up after about 2 hours when configuring ram to 8G using unmodfied seabios.
What is your qemu/kvm command line?
It works fine for me (with a win7 beta I have locally). I do see a brief pause around the point where you show a 2 hour delay, but the delay for me is only a few seconds.
This is the command I used:
../qemu/qemu-2.2.0/x86_64-softmmu/qemu-system-x86_64 -k en-us -snapshot -L test -chardev stdio,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios -m 8192 -hda win7beta.img -enable-kvm -vga cirrus -smp 2 -usb
I think your issue should be reported on the QEMU/KVM mailing lists. It's common to put reserved memory at the end of ram - for example, run "dmesg | grep e820" on a real machine and see what it reports. So, this doesn't look like a seabios issue to me.
-Kevin