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Dave Young 2965faa5e0 kexec: split kexec_load syscall from kexec core code
There are two kexec load syscalls, kexec_load another and kexec_file_load.
 kexec_file_load has been splited as kernel/kexec_file.c.  In this patch I
split kexec_load syscall code to kernel/kexec.c.

And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and
use kexec_file_load only, or vice verse.

The original requirement is from Ted Ts'o, he want kexec kernel signature
being checked with CONFIG_KEXEC_VERIFY_SIG enabled.  But kexec-tools use
kexec_load syscall can bypass the checking.

Vivek Goyal proposed to create a common kconfig option so user can compile
in only one syscall for loading kexec kernel.  KEXEC/KEXEC_FILE selects
KEXEC_CORE so that old config files still work.

Because there's general code need CONFIG_KEXEC_CORE, so I updated all the
architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects
KEXEC_CORE in arch Kconfig.  Also updated general kernel code with to
kexec_load syscall.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Petr Tesarik <ptesarik@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10 13:29:01 -07:00
..
acpi Merge branch 'pm-cpufreq' 2015-09-01 15:52:35 +02:00
asm-generic Merge branch 'akpm' (patches from Andrew) 2015-09-08 17:52:23 -07:00
clocksource
crypto Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2015-09-08 12:41:25 -07:00
drm Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-09-04 15:49:32 -07:00
dt-bindings Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2015-09-08 16:16:26 -07:00
keys PKCS#7: Appropriately restrict authenticated attributes and content type 2015-08-12 17:01:01 +01:00
kvm
linux kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
math-emu
media media updates for v4.3-rc1 2015-09-05 18:21:14 -07:00
memory
misc cxl: Allow the kernel to trust that an image won't change on PERST. 2015-08-14 21:32:07 +10:00
net Changes for 4.3 2015-09-09 08:33:31 -07:00
pcmcia
ras
rdma Changes for 4.3 2015-09-09 08:33:31 -07:00
rxrpc
scsi SCSI misc on 20150901 2015-09-02 12:22:54 -07:00
soc IOMMU Updates for Linux v4.3 2015-09-08 17:22:35 -07:00
sound ALSA: hda - Fix missing inline for dummy snd_hdac_set_codec_wakeup() 2015-09-02 12:24:55 +02:00
target iscsi-target: Fix iscsit_start_kthreads failure OOPs 2015-07-24 14:19:43 -07:00
trace Mostly this is just clean ups and micro optimizations. 2015-09-08 14:04:14 -07:00
uapi proc: export idle flag via kpageflags 2015-09-10 13:29:01 -07:00
video libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
xen xen: features and fixes for 4.3-rc0 2015-09-08 11:46:48 -07:00
Kbuild