Eric DeVolder <eric.devolder@xxxxxxxxxx> writes:
The kexec and crash kernel options are provided in the common kernel/Kconfig.kexec. Utilize the common options and provide the ARCH_HAS_ and ARCH_SUPPORTS_ entries to recreate the equivalent set of KEXEC and CRASH options. Signed-off-by: Eric DeVolder <eric.devolder@xxxxxxxxxx> Reviewed-by: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> --- arch/powerpc/Kconfig | 55 ++++++++++++++------------------------------ 1 file changed, 17 insertions(+), 38 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index bff5820b7cda..36f2fe0cc8a5 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -588,41 +588,21 @@ config PPC64_SUPPORTS_MEMORY_FAILURE default "y" if PPC_POWERNV select ARCH_SUPPORTS_MEMORY_FAILURE -config KEXEC - bool "kexec system call" - depends on PPC_BOOK3S || PPC_E500 || (44x && !SMP) - 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. - - It is an ongoing process to be certain the hardware in a machine - is properly shutdown, so do not be surprised if this code does not - initially work for you. As of this writing the exact hardware - interface is strongly in flux, so no good recommendation can be - made. - -config KEXEC_FILE - bool "kexec file based system call" - select KEXEC_CORE - select HAVE_IMA_KEXEC if IMA - select KEXEC_ELF - depends on PPC64 - depends on CRYPTO=y - depends on CRYPTO_SHA256=y
...
+ +config ARCH_HAS_KEXEC_FILE + def_bool PPC64 && CRYPTO && CRYPTO_SHA256
The =y's got lost here. I think they were both meaningful, because both options are tristate. So this previously required them to be built-in (=y), whereas after your patch it will allow them to be modules. I don't know for sure that those options need to be built-in, but that's what the code does now, so this patch shouldn't change it, at least without an explanation. cheers
