Re: [2.5.70-mm8] NETDEV WATCHDOG: eth0: transmit timed out

[Thomas Schlichter]

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Hi,

it seems that whether the netdevice nor the 8139too parts of the kernel cau=
se=20
my problems but there must have been some bad changes to the interrupt=20
routing or the IO-APIC parts.

I don't have -mm7 handy currently (but at the moment it compiles again) but=
 I=20
attached the contents of /proc/interrupts of 2.4.10 (the system I currently=
=20
run) and 2.5.70-mm8 again.

As you can see there, the -mm8 code does not assign more than 16 interrupt=
=20
sinks but the 2.4.10 (and if I remember correctly -mm7, too) has 22. Perhap=
s=20
even more problematic is that -mm8 seems not to use level-triggered=20
interrupts...!

I could try to revert some IRQ or APIC changes if someone could tell me whi=
ch=20
Changeset may have caused that...

Best reagrds
  Thomas Schlichter

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           CPU0      =20
  0:     184641    IO-APIC-edge  timer
  1:       2037    IO-APIC-edge  keyboard
  2:          0          XT-PIC  cascade
  4:          2    IO-APIC-edge  serial
  8:          2    IO-APIC-edge  rtc
 12:      78366    IO-APIC-edge  PS/2 Mouse
 14:     188581    IO-APIC-edge  ide0
 15:          6    IO-APIC-edge  ide1
 16:     180617   IO-APIC-level  nvidia
 17:      14155   IO-APIC-level  eth0
 18:      82091   IO-APIC-level  EMU10K1
 19:     457792   IO-APIC-level  fcpci
 21:          0   IO-APIC-level  usb-uhci, usb-uhci, usb-uhci
NMI:          0=20
LOC:     184592=20
ERR:          0
MIS:          0

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           CPU0      =20
  0:      52599    IO-APIC-edge  timer
  1:       1075    IO-APIC-edge  i8042
  2:          0          XT-PIC  cascade
  4:         11    IO-APIC-edge  serial
  5:          0    IO-APIC-edge  uhci-hcd
  8:          2    IO-APIC-edge  rtc
  9:          0    IO-APIC-edge  acpi
 10:          0    IO-APIC-edge  ehci-hcd
 11:          0    IO-APIC-edge  eth0, EMU10K1, bttv0, uhci-hcd, uhci-hcd
 12:         79    IO-APIC-edge  i8042
 14:       6217    IO-APIC-edge  ide0
 15:         10    IO-APIC-edge  ide1
NMI:          0=20
LOC:      52557=20
ERR:          0
MIS:          0

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