From: Magnus Damm <magnus@valinux.co.jp>
To: fastboot@lists.osdl.org, linux-kernel@vger.kernel.org
Cc: Magnus Damm <magnus@valinux.co.jp>,
vgoyal@in.ibm.com, ebiederm@xmission.com
Subject: [PATCH 00/03] kexec: Avoid overwriting the current pgd (V2)
Date: Wed, 24 May 2006 13:40:31 +0900 (JST) [thread overview]
Message-ID: <20060524044232.14219.68240.sendpatchset@cherry.local> (raw)
kexec: Avoid overwriting the current pgd (V2)
This patch updates the kexec code for i386 and x86_64 to avoid overwriting
the current pgd. For most people is overwriting the current pgd is not a big
problem. When kexec:ing into a new kernel that reinitializes and makes use of
all memory we don't care about saving state.
But overwriting the current pgd is not a good solution in the case of kdump
(CONFIG_CRASH_DUMP) where we want to preserve as much state as possible when
a crash occurs. This patch solves the overwriting issue.
20060524: V2
- Broke out architecture-specific data structures into asm/kexec.h
- Fixed a i386/PAE page table problem only triggering on real hardware.
- Moved segment handling code into the assembly routines.
20060501: V1
- First release
Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
next reply other threads:[~2006-05-24 4:40 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-24 4:40 Magnus Damm [this message]
2006-05-24 4:40 ` [PATCH 01/03] kexec: Avoid overwriting the current pgd (V2, stubs) Magnus Damm
2006-05-25 2:41 ` [Fastboot] " Eric W. Biederman
2006-05-25 3:45 ` Magnus Damm
2006-05-25 4:37 ` Eric W. Biederman
2006-05-25 7:11 ` Magnus Damm
2006-05-25 16:36 ` Eric W. Biederman
2006-05-26 2:23 ` Magnus Damm
2006-05-24 4:40 ` [PATCH 02/03] kexec: Avoid overwriting the current pgd (V2, i386) Magnus Damm
2006-05-24 22:58 ` Vivek Goyal
2006-05-25 2:14 ` Magnus Damm
2006-05-25 2:18 ` [Fastboot] " Eric W. Biederman
2006-05-25 2:38 ` [Fastboot] " Eric W. Biederman
2006-05-24 4:40 ` [PATCH 03/03] kexec: Avoid overwriting the current pgd (V2, x86_64) Magnus Damm
2006-05-25 2:50 ` [Fastboot] " Eric W. Biederman
2006-05-25 8:26 ` Magnus Damm
2006-05-25 15:21 ` Vivek Goyal
2006-05-26 10:42 ` Magnus Damm
2006-05-26 15:08 ` Vivek Goyal
2006-05-26 15:52 ` Magnus Damm
2006-05-25 16:01 ` Eric W. Biederman
2006-05-26 3:17 ` Magnus Damm
2006-05-26 16:32 ` Eric W. Biederman
2006-05-29 8:40 ` Magnus Damm
2006-05-31 17:19 ` Vivek Goyal
2006-05-26 7:40 ` Gerd Hoffmann
2006-05-26 9:02 ` Magnus Damm
2006-05-26 9:18 ` Eric W. Biederman
2006-05-26 9:29 ` Magnus Damm
2006-05-24 22:56 ` [PATCH 00/03] kexec: Avoid overwriting the current pgd (V2) Vivek Goyal
2006-05-25 2:09 ` Magnus Damm
2006-05-25 2:56 ` Eric W. Biederman
2006-05-25 3:30 ` Magnus Damm
2006-05-25 4:51 ` Eric W. Biederman
2006-05-25 7:29 ` [Fastboot] " Magnus Damm
2006-05-25 16:40 ` Eric W. Biederman
2006-05-26 1:57 ` Magnus Damm
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