Messages in this thread | | | Date | Thu, 06 Jul 2023 15:32:39 -0700 (PDT) | Subject | Re: [PATCH v5 11/13] riscv/kexec: refactor for kernel/Kconfig.kexec | From | Palmer Dabbelt <> |
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On Thu, 06 Jul 2023 15:20:25 PDT (-0700), eric.devolder@oracle.com wrote: > The kexec and crash kernel options are provided in the common > kernel/Kconfig.kexec. Utilize the common options and provide > the ARCH_SUPPORTS_ and ARCH_SELECTS_ entries to recreate the > equivalent set of KEXEC and CRASH options. > > Signed-off-by: Eric DeVolder <eric.devolder@oracle.com> > --- > arch/riscv/Kconfig | 44 +++++++++++++------------------------------- > 1 file changed, 13 insertions(+), 31 deletions(-) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index b49793cf34eb..8a3af850597a 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -647,48 +647,30 @@ config RISCV_BOOT_SPINWAIT > > If unsure what to do here, say N. > > -config KEXEC > - bool "Kexec system call" > - depends on MMU > +config ARCH_SUPPORTS_KEXEC > + def_bool MMU > + > +config ARCH_SELECTS_KEXEC > + def_bool y > + depends on KEXEC > select HOTPLUG_CPU if 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. > +config ARCH_SUPPORTS_KEXEC_FILE > + def_bool 64BIT && MMU > > -config KEXEC_FILE > - bool "kexec file based systmem call" > - depends on 64BIT && MMU > +config ARCH_SELECTS_KEXEC_FILE > + def_bool y > + depends on KEXEC_FILE > select HAVE_IMA_KEXEC if IMA > - select KEXEC_CORE > select KEXEC_ELF > - 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 > depends on CRYPTO=y > depends on CRYPTO_SHA256=y > > -config CRASH_DUMP > - bool "Build kdump crash kernel" > - help > - Generate crash dump after being started by kexec. This should > - be normally only set in special crash dump kernels which are > - loaded in the main kernel with kexec-tools into a specially > - reserved region and then later executed after a crash by > - kdump/kexec. > - > - For more details see Documentation/admin-guide/kdump/kdump.rst > +config ARCH_SUPPORTS_CRASH_DUMP > + def_bool y > > config COMPAT > bool "Kernel support for 32-bit U-mode"
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
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