https://bugzilla.kernel.org/show_bug.cgi?id=197877 --- Comment #5 from kr@xxxxxxxxxx --- Interrupts are handled differently by the more recent driver. From a working system running kernel 3.17.8: --- /proc/interrupts --- CPU0 CPU1 CPU2 CPU3 0: 133 0 0 0 IO-APIC-edge timer 1: 1 11 0 0 IO-APIC-edge i8042 6: 0 3 0 0 IO-APIC-edge floppy 7: 0 0 0 0 IO-APIC-edge parport0 8: 0 1 0 0 IO-APIC-edge rtc0 9: 0 0 0 0 IO-APIC-fasteoi acpi 11: 0 0 0 0 IO-APIC-fasteoi ohci_hcd:usb1 12: 0 165 0 0 IO-APIC-edge i8042 14: 1 254 0 0 IO-APIC-edge pata_serverworks 15: 0 0 0 0 IO-APIC-edge pata_serverworks 16: 0 5658 0 0 IO-APIC 10-fasteoi sata_sil 17: 0 0 0 0 IO-APIC 1-fasteoi hpilo 18: 0 247 0 0 IO-APIC 13-fasteoi eth0 19: 0 35 0 0 IO-APIC 8-fasteoi arcmsr NMI: 0 0 0 0 Non-maskable interrupts LOC: 8967 8566 11465 8375 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 0 0 0 0 Performance monitoring interrupts IWI: 0 1 0 0 IRQ work interrupts RTR: 1 0 0 0 APIC ICR read retries RES: 3182 1918 6329 2498 Rescheduling interrupts CAL: 992 16 11 1265 Function call interrupts TLB: 134 139 181 189 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 1 1 1 1 Machine check polls THR: 0 0 0 0 Hypervisor callback interrupts ERR: 0 MIS: 0 ------------------------ Unloading arcmsr v1.20.00.15 and loading v1.40.0X.02 instead results in this change: --- /proc/interrupts --- 20: 0 0 0 0 PCI-MSI-edge arcmsr ------------------------ Here's the output from lspci. On a working system: --- lspci -vvv with driver v1.20.00.15 --- 07:0e.0 RAID bus controller: Areca Technology Corp. ARC-1120 8-Port PCI-X to SATA RAID Controller Subsystem: Areca Technology Corp. ARC-1120 8-Port PCI-X to SATA RAID Controller Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr+ Stepping+ SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx- Latency: 64 (32000ns min), Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 19 NUMA node: 0 Region 0: Memory at f7ff0000 (32-bit, non-prefetchable) [size=4K] Region 2: Memory at f7800000 (32-bit, prefetchable) [size=4M] [virtual] Expansion ROM at f7f00000 [disabled] [size=64K] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable- Count=1/2 Maskable- 64bit+ Address: 00000000fee0f00c Data: 41a1 Capabilities: [e0] PCI-X non-bridge device Command: DPERE+ ERO- RBC=1024 OST=8 Status: Dev=07:0e.0 64bit+ 133MHz+ SCD- USC- DC=bridge DMMRBC=1024 DMOST=4 DMCRS=32 RSCEM- 266MHz- 533MHz- Kernel driver in use: arcmsr Kernel modules: arcmsr ------------------------------------------ On the same system after loading the most recent arcmsr driver: --- lspci -vvv with driver v1.40.0X.02 --- 07:0e.0 RAID bus controller: Areca Technology Corp. ARC-1120 8-Port PCI-X to SATA RAID Controller Subsystem: Areca Technology Corp. ARC-1120 8-Port PCI-X to SATA RAID Controller Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr+ Stepping+ SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx- Latency: 64 (32000ns min), Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 20 NUMA node: 0 Region 0: Memory at f7ff0000 (32-bit, non-prefetchable) [size=4K] Region 2: Memory at f7800000 (32-bit, prefetchable) [size=4M] [virtual] Expansion ROM at f7f00000 [disabled] [size=64K] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable+ Count=1/2 Maskable- 64bit+ Address: 00000000fee0f00c Data: 41a1 Capabilities: [e0] PCI-X non-bridge device Command: DPERE+ ERO- RBC=1024 OST=8 Status: Dev=07:0e.0 64bit+ 133MHz+ SCD- USC- DC=bridge DMMRBC=1024 DMOST=4 DMCRS=32 RSCEM- 266MHz- 533MHz- Kernel driver in use: arcmsr Kernel modules: arcmsr ------------------------------------------ -- You are receiving this mail because: You are watching the assignee of the bug.
