linux-toradex.git/arch/s390/kernel/crash_dump.c, branch v3.4.2 Linux kernel for Apalis and Colibri modules [S390] kernel: Add OS info memory interface 2012-03-11T15:59:29+00:00 Michael Holzheu holzheu@linux.vnet.ibm.com 2012-03-11T15:59:34+00:00 4857d4bbe9821c8d732cb84455e18e12b3d79add In order to allow kdump based stand-alone dump, some information has to be passed from the old kernel to the new dump kernel. This is done via a the struct "os_info" that contains the following fields: * crashkernel base and size * reipl block * vmcoreinfo * init function A pointer to os_info is stored at a well known storage location and the whole structure as well as all fields are secured with checksums. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> 
In order to allow kdump based stand-alone dump, some information
has to be passed from the old kernel to the new dump kernel. This
is done via a the struct "os_info" that contains the following fields:
 * crashkernel base and size
 * reipl block
 * vmcoreinfo
 * init function
A pointer to os_info is stored at a well known storage location
and the whole structure as well as all fields are secured with
checksums.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[S390] crash_dump: remove duplicate include 2012-02-24T17:01:36+00:00 Danny Kukawka danny.kukawka@bisect.de 2012-02-24T17:01:28+00:00 d60331ac0d961ae063e69c43f09d14244ad5d921 arch/s390/kernel/crash_dump.c included 'linux/crash_dump.h' twice, remove the duplicate. Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> 
arch/s390/kernel/crash_dump.c included 'linux/crash_dump.h' twice,
remove the duplicate.

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[S390] Remove error checking from copy_oldmem_page() 2011-10-30T14:16:47+00:00 Michael Holzheu holzheu@linux.vnet.ibm.com 2011-10-30T14:17:21+00:00 07ea815b22b9f70ec8de6ddf8db63a1dd1585caf Currently it can happen that the pre-allocated ELF header contains a wrong memory map which would result in errors when copying /proc/vmcore. In order to still get a valid vmcore, we (temporarily) disable the error checking in copy_oldmem_page(). This will then produce zero pages for those memory regions. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> 
Currently it can happen that the pre-allocated ELF header contains a wrong
memory map which would result in errors when copying /proc/vmcore.
In order to still get a valid vmcore, we (temporarily) disable the error
checking in copy_oldmem_page(). This will then produce zero pages for those
memory regions.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[S390] kdump backend code 2011-10-30T14:16:42+00:00 Michael Holzheu holzheu@linux.vnet.ibm.com 2011-10-30T14:16:40+00:00 60a0c68df2632feaa4a986af084650d1165d89c5 This patch provides the architecture specific part of the s390 kdump support. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> 
This patch provides the architecture specific part of the s390 kdump
support.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>