On Thursday 27 September 2007 09:04:50 Ben Holt wrote:
> On 01/05/2007, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > I am trying to run in domU, I got a sparkly new machine to move the
> > back end away from the living room... but alas, it doesn't work :(
> >
> > Unfortunately swiotlb=256 is not working for me in domU.
>
> I have run into the exact same problem described in this thread. Has
> anyone found a solution since this thread was active in May? Is
> anyone successfully using ivtv in a domU either in xen 3.x or 2.x?
>
> Many thanks,
>
> - Ben
Hi Ben,
Try installing the latest v4l-dvb repository from
www.linuxtv.org/hg/v4l-dvb.
If that still fails, then try to debug the kernel in order to discover
where exactly the driver fails. I basically know nothing about Xen, so
I won't be able to help you there, but perhaps with some additional
information on exactly where it fails I might get an idea.
But upgrade first, I'm not going to debug the old 0.8.2 driver.
Regards,
Hans
>
> (My own specifics follow)
>
> In my case ivtv loads and works fine in dom0 but not domU (I have 3GB
> RAM so dom0 uses 64M for swiotlb by default). Without setting an
> swiotlb setting in the domU config ivtv fails to load with a DMA
> error:
>
> ivtv: ==================== START INIT IVTV ====================
> ivtv: version 0.8.2 (tagged release) loading
> ivtv: Linux version: 2.6.18-5-xen-686 SMP mod_unload 686 REGPARM
> gcc-4.1 ivtv: In case of problems please include the debug info
> between ivtv: the START INIT IVTV and END INIT IVTV lines, along
> with ivtv: any module options, when mailing the ivtv-users
> mailinglist. ivtv0: Autodetected Hauppauge card (cx23416 based)
> PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
> ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
> ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes)
> tveeprom 0-0050: Hauppauge model 32062, rev B185, serial# 2850531
> tveeprom 0-0050: tuner model is TCL 2002N 6A (idx 85, type 50)
> tveeprom 0-0050: TV standards NTSC(M) (eeprom 0x08)
> tveeprom 0-0050: audio processor is MSP3445 (idx 12)
> tveeprom 0-0050: decoder processor is SAA7115 (idx 19)
> tveeprom 0-0050: has no radio, has IR remote
> ivtv0: Autodetected Hauppauge WinTV PVR-250
> tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0)
> saa7115 0-0021: saa7115 found @ 0x42 (ivtv i2c driver #0)
> msp3400 0-0040: MSP3445G-B8 found @ 0x80 (ivtv i2c driver #0)
> msp3400 0-0040: MSP3445G-B8 supports radio, mode is autodetect and
> autoselect ivtv0: Encoder revision: 0x02060039
> ivtv0 warning: Encoder Firmware can be buggy, use version 0x02040011,
> 0x02040024 or 0x02050032.
> ivtv0: Registered device video0 for encoder MPEG
> Fatal DMA error! Please use 'swiotlb=force'
> ------------[ cut here ]------------
> kernel BUG at arch/i386/kernel/pci-dma-xen.c:343!
> invalid opcode: 0000 [#1]
> SMP
> Modules linked in: msp3400 saa7115 tuner ivtv firmware_class
> i2c_algo_bit cx2341x tveeprom i2c_core videodev v4l1_compat
> v4l2_common evdev pcspkr 8250 serial_core ext3 jbd mbcache dm_mirror
> dm_snapshot dm_mod processor
> CPU: 0
> EIP: 0061:[<c0108c38>] Not tainted VLI
> EFLAGS: 00010282 (2.6.18-5-xen-686 #1)
> EIP is at dma_map_single+0xe4/0x144
> eax: 0000002f ebx: 00000000 ecx: f55f6000 edx: c090e000
> esi: bd91e000 edi: 00000000 ebp: 00000960 esp: c090fd90
> ds: 007b es: 007b ss: 0069
> Process modprobe (pid: 1042, ti=c090e000 task=c1a73000
> task.ti=c090e000) Stack: c029ac26 00008100 00000000 c0e90448 c1a924a0
> c0960000 c1a924a0 c0e90448 ee0de455 00000002 ed5d7000 00000000
> 00400000 00000000 ee0df803 00000000 c0950000 00000000 00000600
> ed5d7000 ed5d705c c0950000 00000008 00000000 Call Trace:
> [<ee0de455>] ivtv_init_buffer+0x15c/0x16e [ivtv]
> [<ee0df803>] ivtv_stream_alloc+0x2a6/0x3df [ivtv]
> [<ee0e612c>] ivtv_streams_setup+0x321/0x34d [ivtv]
> [<ee0e18e3>] ivtv_probe+0x10cd/0x13ea [ivtv]
> [<c0244ba4>] netlink_broadcast+0x244/0x285
> [<c0208448>] __driver_attach+0x0/0x5d
> [<c01c31dc>] pci_device_probe+0x36/0x57
> [<c02083a9>] driver_probe_device+0x42/0x8b
> [<c0208480>] __driver_attach+0x38/0x5d
> [<c0207eca>] bus_for_each_dev+0x33/0x55
> [<c0208313>] driver_attach+0x11/0x13
> [<c0208448>] __driver_attach+0x0/0x5d
> [<c0207be3>] bus_add_driver+0x64/0xfd
> [<c01c3318>] __pci_register_driver+0x47/0x63
> [<ee0e04f8>] module_start+0xb6/0xda [ivtv]
> [<c01337a1>] sys_init_module+0x16c3/0x1846
> [<c0160d88>] cp_new_stat64+0xfd/0x10f
> [<ee0ae000>] saa7115_odd_parity+0x0/0x18 [saa7115]
> [<c0104883>] syscall_call+0x7/0xb
> Code: 03 04 24 89 d7 09 ce 09 df 3d 00 10 00 00 76 24 c1 ed 0c a1 80
> 57 35 c0 0f a3 28 19 c0 85 c0 75 13 68 26 ac 29 c0 e8 5e 28 01 00
> <0f> 0b 57 01 eb ab 29 c0 5a 83 7c 24 08 00 74 15 8b 54 24 08 8b
> EIP: [<c0108c38>] dma_map_single+0xe4/0x144 SS:ESP 0069:c090fd90
> udevd-event[1041]: run_program: '/sbin/modprobe' abnormal exit
> done.
>
>
>
> If I set 'extra="swiotlb=64,force" in the domU config (I've tried
> sizes from 32-512) I get a kernel panic:
>
> Started domain mythtv
> Linux version 2.6.18-5-xen-686 (Debian 2.6.18.dfsg.1-13etch2)
> ([EMAIL PROTECTED]) (gcc version 4.1.2 20061115 (prerelease) (Debian
> 4.1.1-21)) #1 SMP Thu Aug 30 06:00:04 UTC 2007
> BIOS-provided physical RAM map:
> Xen: 0000000000000000 - 0000000040800000 (usable)
> 304MB HIGHMEM available.
> 727MB LOWMEM available.
> ACPI in unprivileged domain disabled
> Built 1 zonelists. Total pages: 264192
> Kernel command line: root=/dev/sda4 ro swiotlb=64,force
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Initializing CPU#0
> PID hash table entries: 4096 (order: 12, 16384 bytes)
> Xen reported: 1913.182 MHz processor.
> Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> ------------[ cut here ]------------
> kernel BUG at lib/../arch/i386/kernel/swiotlb.c:162!
> invalid opcode: 0000 [#1]
> SMP
> Modules linked in:
> CPU: 0
> EIP: e019:[<c01bec75>] Not tainted VLI
> EFLAGS: 00010282 (2.6.18-5-xen-686 #1)
> EIP is at swiotlb_init_with_default_size+0x88/0x14e
> eax: fffffff4 ebx: 00000180 ecx: f55f6000 edx: c031e000
> esi: c0347404 edi: 04000000 ebp: c031ffc0 esp: c031ffb4
> ds: e021 es: e021 ss: e021
> Process swapper (pid: 0, ti=c031e000 task=c02cf660 task.ti=c031e000)
> Stack: c197a000 c0347404 c0ee7b07 00000020 c032d57c 0000000e 00000002
> c197a000 c0347404 c1974364 00000020 c032357f 00008000 c034b280
> 00000000 c0fe0000 00000000 00000000 c010006f
> Call Trace:
> [<c032d57c>] mem_init+0x58/0x392
> [<c032357f>] start_kernel+0x1fb/0x37f
> Code: 44 be f5 ff 83 c8 ff 40 83 f8 06 75 fa 89 d8 b9 1f 00 00 00 c1
> e0 0b ba 06 00 00 00 03 05 14 45 37 c0 e8 c2 4d f5 ff 85 c0 74 08
> <0f> 0b a2 00 fc 76 2a c0 83 eb 80 a1 18 45 37 c0 39 c3 72 c5 b9
> EIP: [<c01bec75>] swiotlb_init_with_default_size+0x88/0x14e SS:ESP
> e021:c031ffb4 <0>Kernel panic - not syncing: Attempted to kill the
> idle task!
>
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