[Bug 1706] New: pc386: spurious interrupt 7

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1706

           Summary: pc386: spurious interrupt 7
           Product: RTEMS
           Version: HEAD
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: bsps
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: ralf.corsepius at rtems.org


When running the testsuites real (PC-)HW, using either pc386 or pc686 BSP, I am
facing long series of "spurious interrupt 7" messages, e.g. with ticker.exe.

No idea why and no idea what to do about them.

Checking /proc/interupts on this machine under linux tells:

# cat /proc/interrupts 
            CPU0       CPU1       
   0:      31084          0   IO-APIC-edge      timer
   1:         29          0   IO-APIC-edge      i8042
   7:        116          0   IO-APIC-edge    
   8:         32          0   IO-APIC-edge      rtc0
   9:         21          0   IO-APIC-fasteoi   acpi
  12:        137          0   IO-APIC-edge      i8042
  16:         12          0   IO-APIC-fasteoi   uhci_hcd:usb5, i915
  17:          0          0   IO-APIC-fasteoi   ra0
  18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
  19:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
  23:        435          0   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb2
  40:          0          0   PCI-MSI-edge      pciehp
  41:          0          0   PCI-MSI-edge      pciehp
  42:      12189          0   PCI-MSI-edge      ahci
  43:        852          0   PCI-MSI-edge      eth0
  44:        499          0   PCI-MSI-edge      hda_intel
 NMI:          0          0   Non-maskable interrupts
 LOC:      37673      50198   Local timer interrupts
 SPU:          0          0   Spurious interrupts
 PMI:          0          0   Performance monitoring interrupts
 PND:          0          0   Performance pending work
 RES:       1015       1571   Rescheduling interrupts
 CAL:         95        137   Function call interrupts
 TLB:        235        204   TLB shootdowns
 TRM:          0          0   Thermal event interrupts
 THR:          0          0   Threshold APIC interrupts
 MCE:          0          0   Machine check exceptions
 MCP:          1          1   Machine check polls
 ERR:        117
 MIS:          0

If I understand this correctly, IRQ7 is unassigned by the BIOS.

-- 
Configure bugmail: https://www.rtems.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching all bug changes.