Re: [PATCH v2 02/13] x86/kexec: refactor for kernel/Kconfig.kexec
From: Baoquan He <hidden>
Date: 2023-06-20 08:22:47
Also in:
linux-m68k, linux-mips, linux-riscv, linux-s390, linux-sh, lkml, loongarch
Hi Eric, On 06/19/23 at 10:57am, Eric DeVolder wrote: ......
+config ARCH_SUPPORTS_KEXEC + def_bool y -config ARCH_HAS_KEXEC_PURGATORY - def_bool KEXEC_FILE +config ARCH_SUPPORTS_KEXEC_FILE + def_bool X86_64 && CRYPTO && CRYPTO_SHA256
......
+config ARCH_SELECTS_KEXEC_FILE + def_bool y depends on KEXEC_FILE - help
I am a little confused about this ARCH_SELECTS_XX adding. Wondering what limits us defining the ARCH_SUPPORTS_KEXEC_FILE like below? I have limited knowledge about Kconfig, please correct me if I am wrong. Thanks in advance. +config ARCH_SUPPORTS_KEXEC_FILE + def_bool y depends on KEXEC_FILE depends on X86_64 && CRYPTO && CRYPTO_SHA256
- - This option makes the kexec_file_load() syscall check for a valid - signature of the kernel image. The image can still be loaded without - a valid signature unless you also enable KEXEC_SIG_FORCE, though if - there's a signature that we can check, then it must be valid. - - In addition to this option, you need to enable signature - verification for the corresponding kernel image type being - loaded in order for this to work. -