tmp_suning_uos_patched/arch
KarimAllah Ahmed a846f47962 x86/kexec: prepend elfcorehdr instead of appending it to the crash-kernel command-line.
Any parameter passed after '--' in the kernel command-line will not be
parsed by the kernel at all, instead it will be passed directly to init
process.

Currently the kernel appends elfcorehdr=<paddr> to the cmdline passed from
kexec load, and if this command-line is used to pass parameters to init
process this means that 'elfcorehdr' will not be parsed as a kernel
parameter at all which will be a problem for vmcore subsystem since it
will know nothing about the location of the ELF structure!

Prepending 'elfcorehdr' instead of appending it fixes this problem since
it ensures that it always comes before '--' and so it's always parsed as a
kernel command-line parameter.

Even with this patch things can still go wrong if 'CONFIG_CMDLINE' was
also used to embedd a command-line to the crash dump kernel and this
command-line contains '--' since the current behavior of the kernel is to
actually append the boot loader command-line to the embedded command-line.

Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-30 19:44:57 -07:00
..
alpha TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
arc Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
arm TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
arm64 The libnvdimm sub-system introduces, in addition to the libnvdimm-core, 2015-06-29 10:34:42 -07:00
avr32 Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
blackfin TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
c6x Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
cris Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
frv Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
h8300 h8300: Always build dtb 2015-06-23 13:36:00 +09:00
hexagon Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
ia64 mm: meminit: make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid 2015-06-30 19:44:56 -07:00
m32r Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
m68k Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2015-06-28 16:52:47 -07:00
metag Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
microblaze Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
mips Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-06-27 12:44:34 -07:00
mn10300 TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
nios2 Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
openrisc Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
parisc Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
powerpc Driver core patches for 4.2-rc1 2015-06-26 15:07:37 -07:00
s390 Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
score Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
sh Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
sparc Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
tile Merge branch 'akpm' (patches from Andrew) 2015-06-26 09:52:05 -07:00
um Merge branch 'for-linus-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2015-06-28 13:55:08 -07:00
unicore32 Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
x86 x86/kexec: prepend elfcorehdr instead of appending it to the crash-kernel command-line. 2015-06-30 19:44:57 -07:00
xtensa Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
.gitignore
Kconfig clone: support passing tls argument via C rather than pt_regs magic 2015-06-25 17:00:38 -07:00