From: ebiederm@xmission.com (Eric W. Biederman)
To: Koichi Suzuki <koichi@intellilink.co.jp>
Cc: Vivek Goyal <vgoyal@in.ibm.com>, Andrew Morton <akpm@osdl.org>,
fastboot <fastboot@lists.osdl.org>,
lkml <linux-kernel@vger.kernel.org>,
Maneesh Soni <maneesh@in.ibm.com>,
Hariprasad Nellitheertha <hari@in.ibm.com>,
suparna bhattacharya <suparna@in.ibm.com>
Subject: Re: [Fastboot] [PATCH] Reserving backup region for kexec based crashdumps.
Date: 02 Feb 2005 07:31:52 -0700 [thread overview]
Message-ID: <m1lla79go7.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <42009874.7000209@intellilink.co.jp>
Koichi Suzuki <koichi@intellilink.co.jp> writes:
> I meant with kexec and dump hook, there could be many more things can be done in
> addition to full core dump. Initiating failover to other node will be one
> example. Starting with this hook, there must be many good ideas. So my idea
> is to make this hook general purpose, not for specific core dump tool.
Again that is what is has been implemented. A fully stand alone executable
that lives in an independent and reserved address in memory is jumped
to.
The goal in the generic kernel is to keep the code path to do that
as small and as simple as possible to reduce the chances of it being
mis-implemented, or the chances of attempting to use corrupted kernel
functionality.
Eric
next prev parent reply other threads:[~2005-02-02 14:34 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
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 [this message]
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
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