diff options
| author | Liao Chang <liaochang1@huawei.com> | 2022-04-08 13:09:11 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-19 22:14:18 +0300 |
| commit | 6261586e0c91db14c34f894f4bc48f2300cff1d4 (patch) | |
| tree | 0bac89b95a140653c0051982eaf0a9cc4743645c /arch/riscv/Kconfig | |
| parent | b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 (diff) | |
| download | linux-6261586e0c91db14c34f894f4bc48f2300cff1d4.tar.xz | |
RISC-V: Add kexec_file support
This patch adds support for kexec_file on RISC-V. I tested it on riscv64
QEMU with busybear-linux and single core along with the OpenSBI firmware
fw_jump.bin for generic platform.
On SMP system, it depends on CONFIG_{HOTPLUG_CPU, RISCV_SBI} to
resume/stop hart through OpenSBI firmware, it also needs a OpenSBI that
support the HSM extension.
Signed-off-by: Liao Chang <liaochang1@huawei.com>
Signed-off-by: Li Zhengyu <lizhengyu3@huawei.com>
Link: https://lore.kernel.org/r/20220408100914.150110-4-lizhengyu3@huawei.com
[Palmer: Make 64-bit only]
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 00fd9c548f26..860817a56af6 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -383,6 +383,20 @@ config KEXEC The name comes from the similarity to the exec system call. +config KEXEC_FILE + bool "kexec file based systmem call" + select KEXEC_CORE + select KEXEC_ELF + select HAVE_IMA_KEXEC if IMA + depends on 64BIT + help + This is new version of kexec system call. This system call is + file based and takes file descriptors as system call argument + for kernel and initramfs as opposed to list of segments as + accepted by previous system call. + + If you don't know what to do here, say Y. + config CRASH_DUMP bool "Build kdump crash kernel" help |