From: ebiederm@xmission.com (Eric W. Biederman)
To: "Barry K. Nathan" <barryn@pobox.com>
Cc: linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>,
Andrew Morton <akpm@osdl.org>,
fastboot@lists.osdl.org, Dave Jones <davej@redhat.com>
Subject: Re: [PATCH 4/29] x86-i8259-shutdown
Date: 25 Jan 2005 03:14:06 -0700 [thread overview]
Message-ID: <m1brbdhl3l.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <20050125094350.GA6372@ip68-4-98-123.oc.oc.cox.net>
"Barry K. Nathan" <barryn@pobox.com> writes:
> On Tue, Jan 25, 2005 at 01:35:00AM -0700, Eric W. Biederman wrote:
> > So I will ask again, as I did when Andrew first pointed this in my
> > direction. What code path in the kernel could possibly care if we
> > disable the i8259 after we have disabled all of the other hardware in
> > the system.
>
> This may be a foolish question, but, are there possibly any code paths
> in the *BIOS* that could care?
Fairly unlikely at this point, as the state we have traditionally
reprogrammed the i8259 to, delivers interrupts to different vectors
than the firmware uses. So I don't see how telling it not
to deliver interrupts where the firmware won't expect them
is likely to change things.
It could be that ACPI AML code is trying something at an inappropriate
time. But I can not even find the ACPI soft power code path. pm_power_off
never seems to get hooked.
Or it could one of the other kexec related patches for all I know.
Until I get a good data point or a reproducer I can't do anything.
It doesn't even make sense to drop the patch because then
I won't get a good data point. And I won't know if similar symptoms
crop of if I need to do something else.
Eric
next prev parent reply other threads:[~2005-01-25 10:16 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-19 7:31 [PATCH 0/29] overview Eric W. Biederman
2005-01-19 7:31 ` [PATCH 1/29] x86-rename-apic_mode_exint Eric W. Biederman
2005-01-19 7:31 ` [PATCH 2/29] x86-local-apic-fix Eric W. Biederman
2005-01-19 7:31 ` [PATCH 3/29] x86_64-e820-64bit Eric W. Biederman
2005-01-19 7:31 ` [PATCH 4/29] x86-i8259-shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 5/29] x86_64-i8259-shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 6/29] x86-apic-virtwire-on-shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 7/29] x86_64-apic-virtwire-on-shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 8/29] vmlinux-fix-physical-addrs Eric W. Biederman
2005-01-19 7:31 ` [PATCH 9/29] x86-vmlinux-fix-physical-addrs Eric W. Biederman
2005-01-19 7:31 ` [PATCH 10/29] x86_64-vmlinux-fix-physical-addrs Eric W. Biederman
2005-01-19 7:31 ` [PATCH 11/29] x86_64-entry64 Eric W. Biederman
2005-01-19 7:31 ` [PATCH 12/29] x86-config-kernel-start Eric W. Biederman
2005-01-19 7:31 ` [PATCH 13/29] x86_64-config-kernel-start Eric W. Biederman
2005-01-19 7:31 ` [PATCH 14/29] kexec-kexec-generic Eric W. Biederman
2005-01-19 7:31 ` [PATCH 15/29] x86-machine_shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 16/29] x86-kexec Eric W. Biederman
2005-01-19 7:31 ` [PATCH 17/29] x86-crashkernel Eric W. Biederman
2005-01-19 7:31 ` [PATCH 18/29] x86_64-machine_shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 19/29] x86_64-kexec Eric W. Biederman
2005-01-19 7:31 ` [PATCH 20/29] x86_64-crashkernel Eric W. Biederman
2005-01-19 7:31 ` [PATCH 21/29] kexec-ppc-support Eric W. Biederman
2005-01-19 7:31 ` [PATCH 22/29] x86-crash_shutdown-nmi-shootdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 23/29] x86-crash_shutdown-snapshot-registers Eric W. Biederman
2005-01-19 7:31 ` [PATCH 24/29] x86-crash_shutdown-apic-shutdown Eric W. Biederman
2005-01-19 7:31 ` [PATCH 25/29] crashdump-documentation Eric W. Biederman
2005-01-19 7:31 ` [PATCH 26/29] crashdump-memory-preserving-reboot-using-kexec Eric W. Biederman
2005-01-19 7:31 ` [PATCH 27/29] crashdump-routines-for-copying-dump-pages Eric W. Biederman
2005-01-19 7:31 ` [PATCH 28/29] crashdump-elf-format-dump-file-access Eric W. Biederman
2005-01-19 7:31 ` [PATCH 29/29] crashdump-linear-raw-format-dump-file-access Eric W. Biederman
2005-01-19 12:25 ` [PATCH 19/29] x86_64-kexec Andi Kleen
2005-01-20 15:50 ` Adrian Bunk
2005-01-20 18:06 ` [Fastboot] " Eric W. Biederman
2005-01-19 12:10 ` [PATCH 16/29] x86-kexec Hariprasad Nellitheertha
2005-01-19 18:17 ` [Fastboot] " Eric W. Biederman
2005-01-25 3:54 ` [PATCH 6/29] x86-apic-virtwire-on-shutdown Len Brown
2005-01-25 6:39 ` Eric W. Biederman
2005-01-25 7:36 ` Len Brown
2005-01-25 9:11 ` Eric W. Biederman
2005-01-25 3:32 ` [PATCH 4/29] x86-i8259-shutdown Len Brown
2005-01-25 3:59 ` Dave Jones
2005-01-25 6:30 ` Eric W. Biederman
2005-01-25 8:35 ` Eric W. Biederman
2005-01-25 9:43 ` Barry K. Nathan
2005-01-25 10:14 ` Eric W. Biederman [this message]
2005-01-25 10:49 ` Barry K. Nathan
2005-01-25 11:40 ` Eric W. Biederman
2005-01-25 20:57 ` Barry K. Nathan
2005-01-25 12:12 ` Eric W. Biederman
2005-01-25 22:02 ` Barry K. Nathan
2005-01-25 22:12 ` Eric W. Biederman
2005-01-26 13:27 ` Sytse Wielinga
2005-01-26 14:06 ` Eric W. Biederman
2005-01-26 14:43 ` Sytse Wielinga
2005-01-26 15:12 ` Eric W. Biederman
2005-01-26 22:58 ` Barry K. Nathan
2005-01-21 7:55 ` [PATCH] Reserving backup region for kexec based crashdumps Vivek Goyal
2005-01-21 7:54 ` [Fastboot] " Eric W. Biederman
2005-01-21 10:57 ` Vivek Goyal
2005-01-21 11:13 ` Eric W. Biederman
2005-01-23 10:14 ` Vivek Goyal
2005-01-26 17:21 ` Eric W. Biederman
2005-01-26 19:15 ` Andrew Morton
2005-01-27 13:45 ` Vivek Goyal
2005-01-27 20:45 ` Eric W. Biederman
2005-01-28 13:06 ` Vivek Goyal
2005-01-28 20:29 ` Eric W. Biederman
2005-02-01 15:17 ` Vivek Goyal
2005-02-01 15:26 ` Eric W. Biederman
2005-02-02 7:10 ` Itsuro Oda
2005-02-02 7:49 ` Koichi Suzuki
2005-02-02 15:24 ` Eric W. Biederman
2005-02-03 7:28 ` Itsuro Oda
2005-02-03 9:00 ` Eric W. Biederman
2005-02-03 23:18 ` Itsuro Oda
2005-02-04 0:41 ` Eric W. Biederman
2005-02-04 1:07 ` Itsuro Oda
2005-02-16 8:49 ` [PATCH] /proc/cpumem Itsuro Oda
2005-02-16 13:58 ` Eric W. Biederman
2005-02-17 0:43 ` Itsuro Oda
2005-02-17 9:55 ` [Fastboot] " Eric W. Biederman
2005-02-18 6:17 ` Itsuro Oda
2005-02-18 7:22 ` Eric W. Biederman
2005-02-17 0:17 ` YAMAMOTO Takashi
2005-02-17 5:58 ` [Fastboot] " Vivek Goyal
2005-02-17 6:18 ` Itsuro Oda
2005-02-17 18:18 ` Dave Jones
2005-02-17 19:46 ` [Fastboot] " Eric W. Biederman
2005-02-02 14:26 ` [Fastboot] [PATCH] Reserving backup region for kexec based crashdumps Eric W. Biederman
2005-02-02 10:07 ` Vivek Goyal
2005-02-02 15:42 ` Eric W. Biederman
2005-02-03 14:47 ` Vivek Goyal
2005-02-01 8:04 ` Koichi Suzuki
2005-02-01 9:06 ` Eric W. Biederman
2005-02-02 7:42 ` Itsuro Oda
2005-02-02 14:45 ` Eric W. Biederman
2005-02-04 0:23 ` Itsuro Oda
2005-02-04 1:55 ` Eric W. Biederman
2005-02-02 9:08 ` Koichi Suzuki
2005-02-02 14:31 ` Eric W. Biederman
2005-02-03 7:02 ` Hirokazu Takahashi
2005-02-03 9:01 ` Vivek Goyal
2005-02-03 9:37 ` Hirokazu Takahashi
2005-02-03 10:07 ` Eric W. Biederman
2005-02-03 9:13 ` Eric W. Biederman
2005-02-03 10:10 ` Hirokazu Takahashi
2005-02-03 10:39 ` Eric W. Biederman
2005-02-04 10:05 ` Hirokazu Takahashi
2005-02-04 11:17 ` Eric W. Biederman
2005-02-04 12:02 ` Eric W. Biederman
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=m1brbdhl3l.fsf@ebiederm.dsl.xmission.com \
--to=ebiederm@xmission.com \
--cc=akpm@osdl.org \
--cc=barryn@pobox.com \
--cc=davej@redhat.com \
--cc=fastboot@lists.osdl.org \
--cc=len.brown@intel.com \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome