serial/ rs232 and qemu /kvm?

serial/ rs232 and qemu /kvm?

[Marc Weber]

First of all, is this the mailinglist to ask this question? Or should I
ask it on the qemu lists?

I'd like to run WinXP/ Vista within kvm and do microcontroller
programming. My host is linux of course. I had some success using the
qemu pre 0.8 way using slsnif. Setting baud rate to 115200 made some of
the operations work, but most don't.

So is there a way to connect COM1 within the guest to /dev/ttyS0 so that
baud rate settings within the guest will be forwarded to /dev/ttyS0 on
the host?

Marc Weber

Re: serial/ rs232 and qemu /kvm?

[Glauber Costa]

On Tue, Aug 19, 2008 at 11:24 AM, Marc Weber <marco-oweber@gmx.de> wrote:
> First of all, is this the mailinglist to ask this question? Or should I
> ask it on the qemu lists?
>
> I'd like to run WinXP/ Vista within kvm and do microcontroller
> programming. My host is linux of course. I had some success using the
> qemu pre 0.8 way using slsnif. Setting baud rate to 115200 made some of
> the operations work, but most don't.
>
> So is there a way to connect COM1 within the guest to /dev/ttyS0 so that
> baud rate settings within the guest will be forwarded to /dev/ttyS0 on
> the host?

check out for qemu's  "-serial" option

>
> Marc Weber
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>



-- 
Glauber Costa.
"Free as in Freedom"
http://glommer.net

"The less confident you are, the more serious you have to act."

add_usb and usb_linux_update_endp_table: Connection timed out

[Marc Weber]

> check out for qemu's  "-serial" option
Only some operations do work this way. The atmel controller signature is
read wrongly from the device all the time using this option.
I'd like to try an USB to serial adapter now.

using usb_add host:1.2 or such I am able to attach the harddisk and
WindowsXP even tells me that it could perform better when beeing
attached to an USB 2.0 adapter. But XP itself gets really slow and
does'nt add an addiotianl drive letter.
Adding my serial cable this way I get a line printed on stdout/err:
usb_linux_update_endp_table: Connection timed out
and Could not add USB device `host:7.2`

Is this default behaviour?

$ uname -r
2.6.25.16-default

$ qemu-system-x86_64          
QEMU PC emulator version 0.9.1 (kvm-72), Copyright (c) 2003-2008 Fabrice Bellard

Sincerly Marc