From: "Randy.Dunlap" <rddunlap@osdlab.org>
To: colin_bayer@compnerd.net, linux-kernel@vger.kernel.org
Subject: Re: Sticky IO-APIC problem
Date: Tue, 03 Jul 2001 14:58:50 -0700 [thread overview]
Message-ID: <3B424019.552D0BCE@osdlab.org> (raw)
Colin Bayer scribed:
| I have a Pentium III 933/133 (Coppermine, stepping 6) in an
Intel-manufactured
| i810 motherboard (hey, I
What mobo (model/name) is it?
Can you give us the output from "lspci -vv"?
| know it's a lame chipset, but it was on sale). On boot, the kernel
(version
| 2.4.6-pre8) identifies and maps the
| IO-APIC onboard, but does not assign any IRQs to it.
|
| The relevant boot log snippet follows.
|
| [root@fortytwo i386]# cat /var/log/dmesg
| ...
| ...
| mapped APIC to ffffe000 (0121c000)
This shows that Linux mapped the APIC (part of the processor).
It says nothing about mapping any IO APICs (unless you deleted
that part :).
So, how does one know if a (UP) system has an IO APIC and that
Linux can be configured to use the UP IO APIC code?...
(That's a serious question: does an IO APIC show up in lspci output?)
And why do you think that this system has an IO APIC?
Is it documented to have one?
[just digging for clues]
| Kernel command line: auto BOOT_IMAGE=linux-test ro root=307
| BOOT_FILE=/boot/vmlinuz-2.4.6-pre8
| devfs=mount pirq=9,4
| PIRQ redirection, working around broken MP-BIOS.
| ... PIRQ0 -> IRQ 9
| ... PIRQ1 -> IRQ 4
| ...
| ...
|
| And /proc/interrupts:
| [root@fortytwo i386]# cat /proc/interrupts
| CPU0
| 0: 79409 XT-PIC timer
| 1: 5911 XT-PIC keyboard
| 2: 0 XT-PIC cascade
| 4: 990 XT-PIC es1371
| 8: 1 XT-PIC rtc
| 9: 26402 XT-PIC usb-uhci, serial
| 11: 16473 XT-PIC i810@PCI:0:1:0
| 14: 5152 XT-PIC ide0
| 15: 47 XT-PIC ide1
| NMI: 0
| ERR: 0
| MIS: 0
| [root@fortytwo i386]#
|
| This problem also occurs when booting without the pirq switch. I've
configured
| everything the way it's
| mentioned in Documentation/i386/IO-APIC.txt, but it doesn't help.
Anyway, thx in
| advance for the help.
~Randy
next reply other threads:[~2001-07-03 21:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-03 21:58 Randy.Dunlap [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-07-09 12:38 Sticky IO-APIC problem Colin Bayer
2001-07-05 4:12 Colin Bayer
2001-07-04 0:19 Colin Bayer
2001-07-03 23:03 Manfred Spraul
2001-07-02 9:25 Colin Bayer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3B424019.552D0BCE@osdlab.org \
--to=rddunlap@osdlab.org \
--cc=colin_bayer@compnerd.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.