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xen-users
RE: [Xen-users] Problem with my UMTS card
Mats Petersson wrote:
>Is the driver for this card a generic driver supplied with the Linux
> distribution, or do you download the driver separately?
>
> There are some drivers that aren't included in the OS that does things
> in "unconventional ways". Those drivers will not work in a
> Para-virtualized driver (including Xen Dom0). [And drivers that are
> included in the OS may still do things in unconventional ways and
> therefore need "fixing" to work with Xen, if these drivers aren't
> commonly used in a Xen environment - maybe no-one has tried them in Xen
> before...]
>
> Do you see any error messages in dmesg or xm dmesg that may be of some
> help?
I have compiled this Dom0 kernel with the basic settings but I had to add some
modules
for pcmcia, ppp and serial and I can't see an error in dmesg ... xm dmesg stops
after
the line:
Serial input->DOM0 (type 'CTRL-a' three times to switch input to Xen).
because I've disabled the serial console in grub.conf.
The UMTS card seems to be a "simple" serial modem on /dev/ttyS3 that uses
orinary modules:
Module Size Used by
ppp_deflate 4768 0
zlib_deflate 22520 1 ppp_deflate
ppp_async 9536 1
crc_ccitt 1664 1 ppp_async
ppp_generic 25716 6 ppp_deflate,ppp_async
slhc 5920 1 ppp_generic
serial_cs 8168 1
8250 34500 4 serial_cs
serial_core 22560 1 8250
pcmcia 22824 9 serial_cs
yenta_socket 20232 3
rsrc_nonstatic 11520 1 yenta_socket
pcmcia_core 44068 4 serial_cs,pcmcia,yenta_socket,
rsrc_nonstatic
agpgart 30216 0
and it doesn't share an interrupt with an other device:
[root@tivoli ~]# cat /proc/interrupts
CPU0
1: 91 Phys-irq i8042
11: 3770 Phys-irq CS46XX, yenta, yenta, serial
12: 896 Phys-irq i8042
14: 6136 Phys-irq ide0
15: 2268 Phys-irq ide1
256: 11863 Dynamic-irq timer0
257: 0 Dynamic-irq xenbus
258: 0 Dynamic-irq net-be-dbg
NMI: 0
LOC: 0
ERR: 0
MIS: 0
I remeber, that I had a similar problem when I moved from kernel version 2.4
to 2.6 on redhat 9. I had to disable /proc/sys/net/ipv4/tcp_ecn to get a
connection to the internet (icmp also worked, but no http possible).
I have also tried other versions of Xen (stable | testing) and other kernel
versions (2.6.11 | 2.6.12), but non of them works.
Ralf
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