Joerg Roedel wrote: > On Tue, Apr 05, 2016 at 12:02:07PM +0200, Clemens Ladisch wrote: >> Joerg Roedel wrote: >>> I have seen that before, can you please boot with 'amd_iommu_dump' on >>> the kernel command line and send me dmesg after boot? >> >> Full dmesg: <https://bugzilla.kernel.org/attachment.cgi?id=211771>: >> ... >> [ 0.179504] pci 0000:04:00.0: [10b5:8112] type 01 class 0x060400 >> [ 0.179681] pci 0000:04:00.0: disabling ASPM on pre-1.1 PCIe device. You >> can enable it with 'pcie_aspm=force' >> [ 0.179966] pci 0000:00:15.0: PCI bridge to [bus 04-05] >> [ 0.180128] pci 0000:00:15.0: bridge window [io 0xc000-0xcfff] >> [ 0.180216] pci 0000:05:04.0: [13f6:8788] type 00 class 0x040100 >> [ 0.180245] pci 0000:05:04.0: reg 0x10: [io 0xc000-0xc0ff] >> [ 0.180390] pci 0000:05:04.0: supports D1 D2 >> [ 0.180478] pci 0000:04:00.0: PCI bridge to [bus 05] >> [ 0.180641] pci 0000:04:00.0: bridge window [io 0xc000-0xcfff] >> ... >> [ 0.459076] AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: fe info 1300 >> [ 0.459238] AMD-Vi: mmio-addr: 00000000feb80000 >> [ 0.459430] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:01.0 flags: >> 00 >> [ 0.459592] AMD-Vi: DEV_RANGE_END devid: ff:1f.6 >> [ 0.460268] AMD-Vi: DEV_ALIAS_RANGE devid: 03:00.0 flags: >> 00 devid_to: 00:14.4 >> [ 0.460555] AMD-Vi: DEV_RANGE_END devid: 03:1f.7 >> [ 0.460717] AMD-Vi: DEV_SPECIAL(HPET[0]) devid: 00:14.0 >> [ 0.460876] AMD-Vi: DEV_SPECIAL(IOAPIC[5]) devid: 00:14.0 >> [ 0.542806] iommu: Adding device 0000:00:02.0 to group 0 >> ... >> [ 0.547889] iommu: Adding device 0000:00:15.0 to group 9 >> ... >> [ 0.549907] iommu: Adding device 0000:04:00.0 to group 9 >> [ 0.550071] iommu: Adding device 0000:05:04.0 to group 9 >> [ 0.550229] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40 >> [ 0.550387] AMD-Vi: Extended features: PreF PPR GT IA >> [ 0.550804] AMD-Vi: Lazy IO/TLB flushing enabled >> ... >> [ 124.474883] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 >> domain=0x0000 address=0x0000000000100000 flags=0x0050] > > Hmm, with this IVRS table it should've never worked.
It did work before 4.4. Is it possible that the IOMMU, or some feature, got enabled by default? Martin/Tomasz, could we get the amd_iommu_dump dmesg output for an earlier kernel? > Did you do a BIOS update in-between? None of the three reporters reported this. Switching between 4.4 and 4.3 makes the problem (dis)appear. The problem must be connected with the kernel code. > Or maybe some change to the sound driver makes it misbehave and use > a wrong pci request-id? The driver did not change at all, and the sound device is a plain PCI chip. The various sound card models use completely different PCIe/PCI bridges (PEX8112 and ASM1083). Regards, Clemens _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
