Re: Why do so many machines need "noapic"?

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From: Chuck Ebbert
Date: Friday, September 7, 2007 - 12:34 pm

On 09/06/2007 07:31 AM, Andi Kleen wrote:

This is the first one I've actually had in front of me:

  HP TX1000 notebook
  Nvidia C51/MCP51 mobile chipset

Booting with "noapic" gives some very strange results. This is two
snapshots of /proc/interrupts taken one second apart. It almost looks
like timer interrupts are occurring on IRQ 0 and IRQ7 on different
CPUs:

           CPU0       CPU1       
  0:     446096       6224    XT-PIC-XT        timer
  1:        342          6    XT-PIC-XT        i8042
  2:          0          0    XT-PIC-XT        cascade
  5:       3099        865    XT-PIC-XT        sata_nv
  7:       8145     494718    XT-PIC-XT        ehci_hcd:usb2
  8:          0          0    XT-PIC-XT        rtc0
  9:        323          9    XT-PIC-XT        acpi
 10:        136         36    XT-PIC-XT        HDA Intel
 11:      43884       1091    XT-PIC-XT        ohci_hcd:usb1, eth0
 12:        104         19    XT-PIC-XT        i8042
 14:       1011         25    XT-PIC-XT        libata
 15:          0          0    XT-PIC-XT        libata
NMI:          0          0 
LOC:       6212     445951 
ERR:     403241
MIS:          0

           CPU0       CPU1       
  0:     447098       6233    XT-PIC-XT        timer
  1:        343          6    XT-PIC-XT        i8042
  2:          0          0    XT-PIC-XT        cascade
  5:       3100        865    XT-PIC-XT        sata_nv
  7:       8158     495847    XT-PIC-XT        ehci_hcd:usb2
  8:          0          0    XT-PIC-XT        rtc0
  9:        323          9    XT-PIC-XT        acpi
 10:        136         36    XT-PIC-XT        HDA Intel
 11:      43988       1094    XT-PIC-XT        ohci_hcd:usb1, eth0
 12:        104         19    XT-PIC-XT        i8042
 14:       1032         26    XT-PIC-XT        libata
 15:          0          0    XT-PIC-XT        libata
NMI:          0          0 
LOC:       6221     446953 
ERR:     404383
MIS:          0



I can't capture the messages. Even when it boots it doesn't last
long enough to get them.

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Messages in current thread:
Why do so many machines need "noapic"?, Chuck Ebbert, (Wed Sep 5, 4:30 pm)
Re: Why do so many machines need "noapic"?, Chuck Ebbert, (Fri Sep 7, 12:34 pm)
Re: Why do so many machines need "noapic"?, Prakash Punnoor, (Fri Sep 7, 10:17 pm)
Re: Why do so many machines need "noapic"?, Chuck Ebbert, (Mon Sep 10, 12:12 pm)
Re: Why do so many machines need "noapic"?, Andi Kleen, (Mon Sep 10, 12:44 pm)
Re: Why do so many machines need "noapic"?, Chuck Ebbert, (Mon Sep 10, 4:33 pm)
Re: Why do so many machines need "noapic"?, Chuck Ebbert, (Thu Sep 13, 9:38 am)
Re: Why do so many machines need "noapic"?, Andrew Morton, (Sat Sep 15, 12:39 am)
Re: Why do so many machines need "noapic"?, Ingo Oeser, (Sat Sep 15, 3:58 am)
Re: Why do so many machines need "noapic"?, Andrew Morton, (Sat Sep 15, 4:08 am)
Re: Why do so many machines need "noapic"?, Matthew Garrett, (Sat Sep 15, 5:08 am)
Re: Why do so many machines need "noapic"?, Rafael J. Wysocki, (Sat Sep 15, 11:42 am)
Re: Why do so many machines need "noapic"?, Dave Jones, (Mon Sep 24, 2:32 pm)
Re: Why do so many machines need "noapic"?, Thomas Gleixner, (Tue Sep 25, 2:06 am)
Re: Why do so many machines need "noapic"?, Phillip Susi, (Thu Sep 27, 3:03 pm)