#13381: IOMMU IRQ routing panic on UEFI Ryzen 7 X370 system
-----------------------------+----------------------------
Reporter: kallisti5 | Owner: nobody
Type: bug | Status: assigned
Priority: normal | Milestone: Unscheduled
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords: IOMMU
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
-----------------------------+----------------------------
Changes (by kallisti5):
* keywords: => IOMMU
Comment:
wwwait.. 0:0:2 is 00.2 in the tree above, not 02.0.
{{{
PCI: [dom 0, bus 0] bus 0, device 0, function 2: vendor 1022, device
1451, revision 00
182 PCI: class_base 08, class_function 06, class_api 00
183 PCI: vendor 1022: Advanced Micro Devices, Inc. [AMD]
184 PCI: device 1451: Unknown
185 PCI: info: Generic system peripheral (IOMMU)
186 PCI: line_size 00, latency 00, header_type 80, BIST 00
187 PCI: ROM base host 00000000, pci 00000000, size 00000000
188 PCI: cardbus_CIS 00000000, subsystem_id 1451,
subsystem_vendor_id 1022
189 PCI: interrupt_line ff, interrupt_pin 01, min_grant 00,
max_latency 00
190 PCI: base reg 0: host 00000000, pci 00000000, size 00000000,
flags 00
191 PCI: base reg 1: host 00000000, pci 00000000, size 00000000,
flags 00
192 PCI: base reg 2: host 00000000, pci 00000000, size 00000000,
flags 00
193 PCI: base reg 3: host 00000000, pci 00000000, size 00000000,
flags 00
194 PCI: base reg 4: host 00000000, pci 00000000, size 00000000,
flags 00
195 PCI: base reg 5: host 00000000, pci 00000000, size 00000000,
flags 00
196 PCI: Capabilities: Secure Device, MSI, HyperTransport
}}}
It looks like that's IOMMU. Which would explain why I didn't see this bug
the first time, and why jua "Started seeing it" I bet having IOMMU
enabled in the BIOS causes it :-)
{{{
# lspci -s 00:00.2 -vv
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 1451
Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1451
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx+
Interrupt: pin A routed to IRQ 27
Capabilities: [40] Secure device <?>
Capabilities: [64] MSI: Enable+ Count=1/4 Maskable- 64bit+
Address: 00000000fee00000 Data: 4091
Capabilities: [74] HyperTransport: MSI Mapping Enable+ Fixed+
}}}
--
Ticket URL: <https://dev.haiku-os.org/ticket/13381#comment:8>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
