Re: [PATCH v3 01/13] kexec: consolidate kexec and crash options into kernel/Kconfig.kexec

From: Russell King (Oracle)
Date: Mon Jun 26 2023 - 12:22:46 EST


On Mon, Jun 26, 2023 at 12:13:20PM -0400, Eric DeVolder wrote:
> +config KEXEC
> + bool "Enable kexec system call"
> + default ARCH_DEFAULT_KEXEC
> + depends on ARCH_SUPPORTS_KEXEC
> + 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.

Is this last paragraph still true? Is the hardware interface still
"strongly in flux" ?

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