Help: getting make-kpkg to build a custom kernel for 586

From	Nicholas Humfrey <njh@aelius.com>
Newsgroups	linux.debian.kernel
Subject	Help: getting make-kpkg to build a custom kernel for 586
Date	2019-02-01 23:50 +0100
Message-ID	<xmPNg-7l1-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi,

I am attempting to build a kernel for VyOS 1.2.0 (which is based on 
Debian Jessie) for the i386 architecture and I have been trying to 
target the kernel at the 586 processor.

I have a kernel configuration, which defines 'CONFIG_M586=y', in the 
kernel source tree:
./arch/x86/configs/i386_vyos_defconfig

I then run `make i386_vyos_defconfig` followed by `make-kpkg 
kernel_image`.
However at some point during the build process the configuration is 
updated to set `CONFIG_M686=y` instead. I have attempted to set 
'--subarch i586' but it doesn't seem to help.

Please could someone help me by explain what is going on and how I 
configure it to target 586 instead?


Thanks!

nick.



The full shell script that calls `make-kpkg` is here:
https://gist.github.com/njh/5da864f713d0c3c10edd55ff7e5ff0fc

The full kernel config file is here:
https://gist.github.com/njh/d6191ee130620ccd190e9273864775bd

The Kernel sources for VyOS are here:
https://github.com/vyos/vyos-kernel

I am using kernel-package 13.014+nmu1 with a patch to fix bug #890817.

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Help: getting make-kpkg to build a custom kernel for 586 Nicholas Humfrey <njh@aelius.com> - 2019-02-01 23:50 +0100
  Re: Help: getting make-kpkg to build a custom kernel for 586 Nicholas Humfrey <njh@aelius.com> - 2019-02-03 19:00 +0100

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