Re: [Xen-devel] Re: PCI passthrough stopped working, brainache!

[Andy Burns <xen.lists@xxxxxxxxxxx>]

Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

> Andy Burns wrote:
>
>> Is the fact that the PCI cards fail in dom0 under Xen a hint?
>
> That is. That would imply it is not the PCI passthrough code (good!).
> It is something related to the driver (as I presume your network card
> works in that box).

Yes, two onboard sky2 gigabit ports and a supermicro 64bit PCI-X JBOD
card with 8 SATA disks

> Perhaps it is the VM_IO bug that sometimes creeps
> up.. Can you give me the lsmod output please? I want to see which
> drivers are loaded for this TV card and I can dig a bit in the
> driver to see if there is something fishy.

Here is an lsmod (from within the domU, but the same modules get used
if it's in dom0 and same kernel 3.1.0-rc9 everywhere now.

Module                  Size  Used by
ds3000                 12827  2
dvb_usb_dw2102         41753  27
dvb_usb                14988  1 dvb_usb_dw2102
lockd                  70080  0
ip6t_REJECT             3992  2
nf_conntrack_ipv6       7730  2
nf_defrag_ipv6          9083  1 nf_conntrack_ipv6
xt_state                1306  2
nf_conntrack           67597  2 nf_conntrack_ipv6,xt_state
ip6table_filter         1655  1
ip6_tables             16792  1 ip6table_filter
tda1004x               14722  2
saa7134_dvb            27032  12
videobuf_dvb            5146  1 saa7134_dvb
dvb_core               87211  2 dvb_usb,videobuf_dvb
firewire_ohci          26101  0
ir_lirc_codec           4214  0
lirc_dev               12904  1 ir_lirc_codec
firewire_core          49303  1 firewire_ohci
ir_mce_kbd_decoder      4208  0
ir_sony_decoder         2109  0
ir_jvc_decoder          2218  0
ir_rc6_decoder          2682  0
ir_rc5_decoder          2138  0
rc_videomate_tv_pvr     1289  0
ir_nec_decoder          2570  0
saa7134               159679  1 saa7134_dvb
crc_itu_t               1547  1 firewire_core
rc_core                17136  12
dvb_usb,ir_lirc_codec,ir_mce_kbd_decoder,ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,ir_rc5_decoder,rc_videomate_tv_pvr,ir_nec_decoder,saa7134
videobuf_dma_sg         8462  2 saa7134_dvb,saa7134
videobuf_core          15780  3 videobuf_dvb,saa7134,videobuf_dma_sg
v4l2_common             6905  1 saa7134
videodev               78689  2 saa7134,v4l2_common
media                  11511  1 videodev
v4l2_compat_ioctl32     7665  1 videodev
tveeprom               13045  1 saa7134
i2c_core               25728  9
ds3000,dvb_usb_dw2102,dvb_usb,tda1004x,saa7134_dvb,saa7134,v4l2_common,videodev,tveeprom
sunrpc                200831  2 lockd
xen_pcifront           12182  0
xen_netfront           16358  0
xen_blkfront           12741  4

Specifically the tuner drivers are

ds3000  and  dvb_usb_dw2102  for the DVB-S2 PCIe that works

tveeprom,  saa7134,  saa7134_dvb   and  tda1004x  for the troublesome
DVB-T PCI cards

> I saw something about I2C, is there a knob in the driver to _not_
> use I2C?

I can certainly live without all the LIRC stuff by blacklisting all
the ir_xxx_decoder stuff, I'll check modinfo of the drivers to see
what options exist.

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