Eric DeVolder <eric.devol...@oracle.com> 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.devol...@oracle.com> > Reviewed-by: Sourabh Jain <sourabhj...@linux.ibm.com> > --- > 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
