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The patch is for kexec-tools-testing-20070330.
(http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/)
The kexec command gets the address and size of the vmcoreinfo data from
/sys/kernel/vmcoreinfo, and passes them to the second kernel through
ELF header of /proc/vmcore. When the second kernel is booting, the
kernel gets them from the ELF header and creates vmcoreinfo's PT_NOTE
segment into /proc/vmcore.
Signed-off-by: Dan Aloni <da-x@monatomic.org>
Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: Simon Horman <horms@verge.net.au>
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The recently introduce kexec debug routine dprintf clashes with an existing
libc symbol. Rename dprintf to dbgprintf.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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Use the new fprintf macro where possible
Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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architecture.
This is necessary when running Xen with a 64 bit hypervisor and 32 bit
domain 0 since the CPU crash notes will be 64 bit.
Detecting the hypervisor archiecture requires libxenctrl and therefore this
support is optional and disabled by default.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Acked-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Simon Horman <horms@verge.net.au>
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Keep alignment comment in elf code and use ELF_CORE_HEADER_ALIGN
This patch puts back and extends the alignment comment in crashdump-elf.c
and adds a small check to make sure the arch-specific code aligns properly.
Instead of hardcoding 1024 we introduce ELF_CORE_HEADER_ALIGN.
The idea behind the alignment requirement is explained here:
http://lists.osdl.org/mailman/htdig/fastboot/2006-November/005147.html
Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Acked-by: Vivek Goyal <vgoyal@in.ibm.com>
Removed trainling whitespace after "kilobytes,"
Signed-off-by: Simon Horman <horms@verge.net.au>
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load_crashdump_segments(): size should really be an unsigned long
Signed-off-by: Simon Horman <horms@verge.net.au>
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crash_create_XXX_headers assumes that all arhitectures need an alignment of
1024bytes. But on ia64 at least this is not true. This patch adds an
alignment parameter to crash_create_XXX_headers, and calls passes
a value of 1024 for all architectures except ia64, where EFI_PAGE_SIZE (4096)
is passed.
If there are problems with alignment on other architectures hopefully
this facility will work for them too.
Cc: Bernhard Walle <bwalle@suse.de>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Zou, Nanhai <nanhai.zou@intel.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
kexec/arch/i386/crashdump-x86.c | 4 ++--
kexec/arch/ia64/crashdump-ia64.c | 5 +++--
kexec/arch/ppc64/crashdump-ppc64.c | 4 ++--
kexec/arch/x86_64/crashdump-x86_64.c | 2 +-
kexec/crashdump-elf.c | 11 ++---------
kexec/crashdump.h | 6 ++++--
6 files changed, 14 insertions(+), 18 deletions(-)
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Use the appropriate format in debug print statements.
This is kind of messy because the same code is compiled
with different definitions of the PHDR type. The solution
below is the best I can think of at this time.
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Sachin P. Sant <sachinp@in.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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kexec-tools: 1k alignment comment
This patch adds the 1k alignment comment as suggested by Vivek.
Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Simon Horman <horms@verge.net.au>
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kexec-tools: Introduce crashdump-xen.c and Xen support V2
This patch adds the new file crashdump-xen.c that implements Xen support. The
Xen support is not complete yet in the sense that a special program header
for the hypervisor isn't created. Crash notes for physical cpus are created
so basic support is at least provided by this patch.
Version 2 of this patch includes a cleaner implementation for crashdump-elf.c
together with a bugfix for xen_get_nr_phys_cpus().
Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Removed trailing whitespace
Signed-off-by: Simon Horman <horms@verge.net.au>
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kexec-tools: Introduce crashdump-elf.c and crash_create_elf32/64_headers() V2
This patch adds the new file crashdump-elf.c that implements a single generic
function which is used to create elf headers. The file gets included twice by
crash.c to create two functions from the same source. These two functions are
named crash_create_elf32_headers() and crash_create_elf64_headers().
The new code differs from prepare_crash_memory_elf32/64_headers() in the sense
that both allocation and setup now are done in the same function.
This patch only adds the new code, following patches make sure the different
architecture-specific files make use of the new code.
This version contains a new comment as suggested by Vivek, together with
that the alignment now is fixed at 1024 regardless of architecture. The cpu
elf note callback code has been slightly reworked to become cleaner. Also,
FUNCTION has been renamed to FUNC.
Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Removed trainling whitespace
Signed-off-by: Simon Horman <horms@verge.net.au>
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