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| author | Vivek Goyal <vgoyal@redhat.com> | 2014-08-08 14:26:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-08 15:57:32 -0700 |
| commit | 12db5562e0352986a265841638482b84f3a6899b (patch) | |
| tree | 533100da8331131037128616b3f9d501c07a6def /arch/tile | |
| parent | 8fc5b4d4121c95482b2583a07863c6b0aba2d9e1 (diff) | |
| download | linux-12db5562e0352986a265841638482b84f3a6899b.tar.gz linux-12db5562e0352986a265841638482b84f3a6899b.tar.bz2 linux-12db5562e0352986a265841638482b84f3a6899b.zip | |
kexec: load and relocate purgatory at kernel load time
Load purgatory code in RAM and relocate it based on the location.
Relocation code has been inspired by module relocation code and purgatory
relocation code in kexec-tools.
Also compute the checksums of loaded kexec segments and store them in
purgatory.
Arch independent code provides this functionality so that arch dependent
bootloaders can make use of it.
Helper functions are provided to get/set symbol values in purgatory which
are used by bootloaders later to set things like stack and entry point of
second kernel etc.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 7fcd492adbfc..a3ffe2dd4832 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -191,6 +191,8 @@ source "kernel/Kconfig.hz" config KEXEC bool "kexec system call" + select CRYPTO + select CRYPTO_SHA256 ---help--- kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot |