Can you try http://kvm.qumranet.com/kvmwiki/WindowsGuestDebug
You can use windows host as a VM too.
Since (in the past) there was a problem with the virtual serial polling
you can use -no-kvm and the
qemu patch, as described in the wiki.
Good luck, Dor.
Muppana, Bhaskar wrote:
Hi,
I am facing issues while trying to debug Windows XP kernel running on
top of Linux KVM.
I have to debug Windows XP kernel running in a VM. I have dedicated
ttyS0 on the host to the guest. I am using the following command to
bring up Windows VM.
/usr/local/kvm/bin/qemu-system-x86_64 \
-hda /opt/vdisk.img \
-boot c \
-m 512 \
-net nic,model=rtl8139,macaddr=52:54:00:12:34:56 \
-net tap,ifname=qtap0,script=no \
-smp 1 \
-usb \
-usbdevice tablet \
-localtime \
-serial /dev/ttyS0
I have another machine, running Windows XP, connected to the Linux host
through serial cable.
--------
|Windows |
| VM |
|(target)|
--------
--------------- ----------------
| Windows Host | ----------------- | Linux with KVM |
--------------- ----------------
I am able to send messages between Windows host and target through
serial ports (tested using windows power shell). But, I am not able to
use Win DBG (Kernel Debugger) in host to connect to target. Target is
getting stuck while booting.
Debug enabled Windows entry in boot.ini:
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /fastdetect /debugport=COM1 /baudrate=115200
Can someone please help me regarding this?
Thanks,
Bhaskar
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