serial=pty in HVM guests broken?

[Dustin Marquess <dmarquess%gmail.com@localhost>]

All,

I've been trying to run WinDBG against a Windows HVM domU to debug the
GPLPV drivers.  After spending an hour wondering why it wasn't
working, I figured I'd try a simple test.

On the NetBSD server I ran 'xm console win2k3'.  In the domU, I loaded
up Tera Term and set it to use COM1 @ 115200.

Anything I typed in the xm console window showed up fine in Tera Term,
however NOTHING I typed in Tera Term showed up in the xm console
window.  Tried changing the baud rates, and that didn't seem to matter
(doubt it would, since xmc->TT worked no matter what).

Is this a known issue?

paradise# uname -a
NetBSD paradise.fdf.net 5.0_STABLE NetBSD 5.0_STABLE (XEN3_DOM0) #0:
Thu Jun 25 08:25:30 UTC 2009
builds%b6.netbsd.org@localhost:/home/builds/ab/netbsd-5/amd64/200906250000Z-obj/home/builds/ab/netbsd-5/src/sys/arch/amd64/compile/XEN3_DOM0
amd64
paradise# pkg_info | grep xen
xenkernel33-3.3.1nb1 Xen 3.3.1 Kernel
xentools33-3.3.1nb6 Userland Tools for Xen 3.3.x

Config:

serial = 'pty'
kernel = '/usr/pkg/lib/xen/boot/hvmloader'
builder = 'hvm'
memory = '768'
device_model = '/usr/pkg/libexec/qemu-dm'

disk = [ 'file:/usr/local/xen/win2k3.img,hda,w' ]
name = "win2k3"
vif = [ 'mac=00:16:3e:50:02:f0, bridge=bridge1' ]

vcpus = 2
boot= 'c'
vnc = 1
usbdevice = 'tablet'

Thanks!
-Dustin