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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-20 01:18:47 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-20 02:26:50 +0300 |
| commit | 83a7a614ce584c469bf8abfc2cd539701bd7d4e9 (patch) | |
| tree | 0ee08a965ab0cdae1f7c33c511d4e0603ed74a57 /arch/riscv/Kconfig | |
| parent | 7eb6369d7acfe87df73848b3757c648e8f352b86 (diff) | |
| parent | 838b3e28488f702e2b5477b393f009b2639d2b1a (diff) | |
| download | linux-83a7a614ce584c469bf8abfc2cd539701bd7d4e9.tar.xz | |
riscv: kexec: add kexec_file_load() support
This patch set implements kexec_file_load() for RISC-V, which is
currently only allowed on rv64 due to some minor build issues on 32-bit
platforms in the generic code. This allows users to kexec() using an FD
as opposed to a buffer.
Link: https://lore.kernel.org/all/20220408100914.150110-1-lizhengyu3@huawei.com/
* palmer/riscv-kexec_file:
RISC-V: Load purgatory in kexec_file
RISC-V: Add purgatory
RISC-V: Support for kexec_file on panic
RISC-V: Add kexec_file support
RISC-V: use memcpy for kexec_file mode
kexec_file: Fix kexec_file.c build error for riscv platform
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index cad2d42a77d9..0f1dc11b5d7f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -418,6 +418,26 @@ 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 ARCH_HAS_KEXEC_PURGATORY + def_bool KEXEC_FILE + select BUILD_BIN2C + depends on CRYPTO=y + depends on CRYPTO_SHA256=y + config CRASH_DUMP bool "Build kdump crash kernel" help |