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| author |   Magnus Damm <damm@igel.co.jp> | 2009-03-18 08:51:29 +0000 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2009-03-18 18:57:43 +0900 |
| commit | b7cf6ddc13186f9272438a97aa75972d496d0b0a (patch) | |
| tree | f0b7e65b92a573dd10fc97b9bad0d832ed45f64b /arch/sh/Kconfig | |
| parent | sh: rework kexec segment code (diff) | |
| download | linux-dev-b7cf6ddc13186f9272438a97aa75972d496d0b0a.tar.xz linux-dev-b7cf6ddc13186f9272438a97aa75972d496d0b0a.zip | |
sh: add kexec jump support
Add kexec jump support to the SuperH architecture.
Similar to the x86 implementation, with the following
exceptions:
- Instead of separating the assembly code flow into
two parts for regular kexec and kexec jump we use a
single code path. In the assembly snippet regular
kexec is just kexec jump that never comes back.
- Instead of using a swap page when moving data between
pages the page copy assembly routine has been modified
to exchange the data between the pages using registers.
- We walk the page list twice in machine_kexec() to
do and undo physical to virtual address conversion.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/Kconfig')
| -rw-r--r-- | arch/sh/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 6c56495fd158..8d50d527c595 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -559,6 +559,13 @@ config CRASH_DUMP For more details see Documentation/kdump/kdump.txt +config KEXEC_JUMP + bool "kexec jump (EXPERIMENTAL)" + depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL + help + Jump between original kernel and kexeced kernel and invoke + code via KEXEC + config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS |