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authorEric W. Biederman <ebiederm@xmission.com>2005-06-25 14:58:02 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:50 -0700
commit5234f5eb04abbbfa306ccfbc2ccbb6e73f515b15 (patch)
tree60f4701fdc501955ccff198f84913b96e3bbf5bf /arch/x86_64/Kconfig
parentd89559589a588d1a654329d8cd9a3ad33aaad9be (diff)
[PATCH] kexec: x86_64 kexec implementation
This is the x86_64 implementation of machine kexec. 32bit compatibility support has been implemented, and machine_kexec has been enhanced to not care about the changing internal kernel paget table structures. From: Alexander Nyberg <alexn@dsv.su.se> build fix Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/Kconfig')
-rw-r--r--arch/x86_64/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 56c02cf6397..d09437b5c48 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -380,6 +380,23 @@ config PHYSICAL_START
Don't change this unless you know what you are doing.
+config KEXEC
+ bool "kexec system call (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ 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
+ but it is indepedent of the system firmware. And like a reboot
+ you can start any kernel with it, not just Linux.
+
+ The name comes from the similiarity to the exec system call.
+
+ It is an ongoing process to be certain the hardware in a machine
+ is properly shutdown, so do not be surprised if this code does not
+ initially work for you. It may help to enable device hotplugging
+ support. As of this writing the exact hardware interface is
+ strongly in flux, so no good recommendation can be made.
+
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS