linux-kernel - Re: [PATCH 6/6] Add Propeller configuration for kernel build.

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Message-Id: <63eb1654-c614-4f6a-9bc5-8c8085eadf8c@app.fastmail.com>
Date: Mon, 29 Jul 2024 09:02:20 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Rong Xu" <xur@...gle.com>, "Han Shen" <shenhan@...gle.com>,
 "Sriraman Tallam" <tmsriram@...gle.com>, "David Li" <davidxl@...gle.com>,
 "Jonathan Corbet" <corbet@....net>,
 "Masahiro Yamada" <masahiroy@...nel.org>,
 "Nathan Chancellor" <nathan@...nel.org>,
 "Nicolas Schier" <nicolas@...sle.eu>,
 "Thomas Gleixner" <tglx@...utronix.de>, "Ingo Molnar" <mingo@...hat.com>,
 "Borislav Petkov" <bp@...en8.de>,
 "Dave Hansen" <dave.hansen@...ux.intel.com>, x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>, "Ard Biesheuvel" <ardb@...nel.org>,
 "Josh Poimboeuf" <jpoimboe@...nel.org>,
 "Peter Zijlstra" <peterz@...radead.org>,
 "Nick Desaulniers" <ndesaulniers@...gle.com>,
 "Bill Wendling" <morbo@...gle.com>,
 "Justin Stitt" <justinstitt@...gle.com>,
 "Vegard Nossum" <vegard.nossum@...cle.com>, "John Moon" <john@...on.dev>,
 "Andrew Morton" <akpm@...ux-foundation.org>,
 "Heiko Carstens" <hca@...ux.ibm.com>,
 "Luis Chamberlain" <mcgrof@...nel.org>,
 "Samuel Holland" <samuel.holland@...ive.com>,
 "Mike Rapoport" <rppt@...nel.org>,
 "Paul E. McKenney" <paulmck@...nel.org>,
 "Rafael Aquini" <aquini@...hat.com>, "Petr Pavlu" <petr.pavlu@...e.com>,
 "Eric DeVolder" <eric.devolder@...cle.com>,
 "Bjorn Helgaas" <bhelgaas@...gle.com>,
 "Randy Dunlap" <rdunlap@...radead.org>,
 "Benjamin Segall" <bsegall@...gle.com>,
 "Breno Leitao" <leitao@...ian.org>,
 "Wei Yang" <richard.weiyang@...il.com>,
 "Brian Gerst" <brgerst@...il.com>, "Juergen Gross" <jgross@...e.com>,
 "Palmer Dabbelt" <palmer@...osinc.com>,
 "Alexandre Ghiti" <alexghiti@...osinc.com>,
 "Kees Cook" <kees@...nel.org>, "Sami Tolvanen" <samitolvanen@...gle.com>,
 "Xiao W Wang" <xiao.w.wang@...el.com>,
 "Jan Kiszka" <jan.kiszka@...mens.com>
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-kbuild@...r.kernel.org, linux-efi@...r.kernel.org,
 Linux-Arch <linux-arch@...r.kernel.org>, llvm@...ts.linux.dev,
 "Krzysztof Pszeniczny" <kpszeniczny@...gle.com>,
 "Stephane Eranian" <eranian@...gle.com>
Subject: Re: [PATCH 6/6] Add Propeller configuration for kernel build.

On Sun, Jul 28, 2024, at 22:29, Rong Xu wrote:
>  Documentation/dev-tools/index.rst     |   1 +
>  Documentation/dev-tools/propeller.rst | 188 ++++++++++++++++++++++++++
>  MAINTAINERS                           |   7 +
>  Makefile                              |   1 +
>  arch/Kconfig                          |  22 +++
>  arch/x86/Kconfig                      |   1 +
>  arch/x86/boot/compressed/Makefile     |   3 +
>  arch/x86/kernel/vmlinux.lds.S         |   4 +
>  arch/x86/platform/efi/Makefile        |   1 +
>  drivers/firmware/efi/libstub/Makefile |   2 +
>  include/asm-generic/vmlinux.lds.h     |   8 +-
>  scripts/Makefile.lib                  |  10 ++
>  scripts/Makefile.propeller            |  25 ++++
>  tools/objtool/check.c                 |   1 +

I have not looked in much detail, but I see that you need
a special case for arch/x86/boot/compressed and
drivers/firmware/efi, which makes it likely that you
need to also disable properller support for
arch/x86/purgatory/Makefile, which tends to have similar
requirements.

     Arnd