Hi Hans, On Mon, 2015-02-02 at 10:36 +0100, Hans Verkuil wrote: > On 02/01/2015 02:06 PM, Raimonds Cicans wrote: > > On 29.01.2015 14:12, Hans Verkuil wrote: > >> On 01/29/15 12:51, Raimonds Cicans wrote: > >>> On 29.01.2015 09:33, Hans Verkuil wrote: > >>>> On 01/11/2015 10:33 AM, Raimonds Cicans wrote: > >>>>> I contacted you because I am hit by regression caused by your commit: > >>>>> 453afdd "[media] cx23885: convert to vb2" > >>>>> > >>>>> > >>>>> My system: > >>>>> AMD Athlon(tm) II X2 240e Processor on Asus M5A97 LE R2.0 motherboard > >>>>> TBS6981 card (Dual DVB-S/S2 PCIe receiver, cx23885 in kernel driver) > >>>>> > >>>>> After upgrade from kernel 3.13.10 (do not have commit) to 3.17.7 > >>>>> (have commit) I started receiving following IOMMU related messages: > >>>>> > >>>>> 1) > >>>>> AMD-Vi: Event logged [IO_PAGE_FAULT device=0a:00.0 domain=0x001d > >>>>> address=0x000000000637c000 flags=0x0000] > >>>>> > >>>>> where device=0a:00.0 is TBS6981 card > >>>> As far as I can tell this has nothing to do with the cx23885 driver but is > >>>> a bug in the amd iommu/BIOS. See e.g.: > >>>> > >>>> https://bbs.archlinux.org/viewtopic.php?pid=1309055 > >>>> > >>>> I managed to reproduce the Intel equivalent if I enable CONFIG_IOMMU_SUPPORT. > >>>> > >>>> Most likely due to broken BIOS/ACPI/whatever information that's read by the > >>>> kernel. I would recommend disabling this kernel option. > >>>> > >>> Maybe... > >>> > >>> But on other hand this did not happen on old kernel with old driver. > >>> And when I did bisection on old kernel + media tree I started to > >>> receive this message only on new driver. > >> Was CONFIG_IOMMU_SUPPORT enabled in the old kernel? > > > > zgrep CONFIG_IOMMU_SUPPORT /proc/config.gz > > CONFIG_IOMMU_SUPPORT=y > > > > > > Raimonds Cicans > > > > Raimonds and Jurgen, > > Can you both test with the following patch applied to the driver: Unfortunately the mpeg error is not (completely) gone: [ 172.946876] dvb_ca adapter 0: DVB CAM detected and initialised successfully [ 276.938186] dvb_ca adapter 1: DVB CAM detected and initialised successfully [ 405.007902] dvb_ca adapter 2: DVB CAM detected and initialised successfully [ 8031.928944] traps: polkitd[1017] general protection ip:7f8754445022 sp:7fff3ef612d0 error:0 in libmozjs-17.0.so[7f8754306000+3b3000] [18977.465763] perf interrupt took too long (2510 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 [60407.000404] cx23885[1]: mpeg risc op code error [60407.000409] cx23885[1]: TS1 B - dma channel status dump [60407.000411] cx23885[1]: cmds: init risc lo : 0xb8869000 [60407.000414] cx23885[1]: cmds: init risc hi : 0x00000000 [60407.000417] cx23885[1]: cmds: cdt base : 0x00010580 [60407.000420] cx23885[1]: cmds: cdt size : 0x0000000a [60407.000422] cx23885[1]: cmds: iq base : 0x00010400 [60407.000425] cx23885[1]: cmds: iq size : 0x00000010 [60407.000427] cx23885[1]: cmds: risc pc lo : 0xc9601048 [60407.000430] cx23885[1]: cmds: risc pc hi : 0x00000000 [60407.000433] cx23885[1]: cmds: iq wr ptr : 0x00004105 [60407.000435] cx23885[1]: cmds: iq rd ptr : 0x00004109 [60407.000438] cx23885[1]: cmds: cdt current : 0x000105a8 [60407.000441] cx23885[1]: cmds: pci target lo : 0xb8988000 [60407.000443] cx23885[1]: cmds: pci target hi : 0x00000000 [60407.000445] cx23885[1]: cmds: line / byte : 0x00200000 [60407.000448] cx23885[1]: risc0: 0x1c0002f0 [ write sol eol count=752 ] [60407.000452] cx23885[1]: risc1: 0xb8988000 [ writerm sol 23 20 19 resync count=0 ] [60407.000455] cx23885[1]: risc2: 0x00000000 [ INVALID count=0 ] [60407.000457] cx23885[1]: risc3: 0x1c0002f0 [ write sol eol count=752 ] [60407.000460] cx23885[1]: (0x00010400) iq 0: 0xb89888d0 [ writerm sol 23 20 19 resync count=2256 ] [60407.000464] cx23885[1]: iq 1: 0x00000000 [ arg #1 ] [60407.000466] cx23885[1]: iq 2: 0x1c0002f0 [ arg #2 ] [60407.000468] cx23885[1]: (0x0001040c) iq 3: 0xb8988bc0 [ writerm sol 23 20 19 resync count=3008 ] [60407.000472] cx23885[1]: iq 4: 0x00000000 [ arg #1 ] [60407.000474] cx23885[1]: iq 5: 0x71000000 [ arg #2 ] [60407.000476] cx23885[1]: (0x00010418) iq 6: 0x1c0002f0 [ write sol eol count=752 ] [60407.000479] cx23885[1]: iq 7: 0xb8988000 [ arg #1 ] [60407.000481] cx23885[1]: iq 8: 0x00000000 [ arg #2 ] [60407.000483] cx23885[1]: (0x00010424) iq 9: 0x1c0002f0 [ write sol eol count=752 ] [60407.000486] cx23885[1]: iq a: 0xb89882f0 [ arg #1 ] [60407.000488] cx23885[1]: iq b: 0x00000000 [ arg #2 ] [60407.000490] cx23885[1]: (0x00010430) iq c: 0x1c0002f0 [ write sol eol count=752 ] [60407.000493] cx23885[1]: iq d: 0xb89885e0 [ arg #1 ] [60407.000495] cx23885[1]: iq e: 0x00000000 [ arg #2 ] [60407.000497] cx23885[1]: (0x0001043c) iq f: 0x1c0002f0 [ write sol eol count=752 ] [60407.000500] cx23885[1]: iq 10: 0x6a76032d [ arg #1 ] [60407.000502] cx23885[1]: iq 11: 0x3a68baa3 [ arg #2 ] [60407.000503] cx23885[1]: fifo: 0x00005000 -> 0x6000 [60407.000504] cx23885[1]: ctrl: 0x00010400 -> 0x10460 [60407.000506] cx23885[1]: ptr1_reg: 0x00005860 [60407.000508] cx23885[1]: ptr2_reg: 0x000105a8 [60407.000511] cx23885[1]: cnt1_reg: 0x00000028 [60407.000513] cx23885[1]: cnt2_reg: 0x00000005 [63048.983736] dvb_ca adapter 2: DVB CAM detected and initialised successfully [97553.449010] dvb_ca adapter 0: DVB CAM detected and initialised successfully Regards, Jurgen -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
