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| author | Youling Tang <tangyouling@loongson.cn> | 2022-10-12 16:36:19 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-10-12 16:36:19 +0800 |
| commit | 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 (patch) | |
| tree | b4be8ab432c4fd77b484dbc4445de8a609444197 /arch/loongarch/Kconfig | |
| parent | 2d2c395217d2233e752dbddcae3c5d94050b48c1 (diff) | |
| download | linux-4a03b2ac06a5bcae29371866d9d11f5bfd4c9188.tar.bz2 | |
LoongArch: Add kexec support
Add three new files, kexec.h, machine_kexec.c and relocate_kernel.S to
the LoongArch architecture, so as to add support for the kexec re-boot
mechanism (CONFIG_KEXEC) on LoongArch platforms.
Kexec supports loading vmlinux.elf in ELF format and vmlinux.efi in PE
format.
I tested kexec on LoongArch machines (Loongson-3A5000) and it works as
expected:
$ sudo kexec -l /boot/vmlinux.efi --reuse-cmdline
$ sudo kexec -e
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index cc3ba53242b6..cbbb82b0c4fe 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -426,6 +426,17 @@ config ARCH_IOREMAP protection support. However, you can enable LoongArch DMW-based ioremap() for better performance. +config KEXEC + bool "Kexec system call" + select KEXEC_CORE + 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 independent of the system firmware. And like a reboot + you can start any kernel with it, not just Linux. + + The name comes from the similarity to the exec system call. + config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS |