linux-kernel - Re: [PATCH] kbuild: mark "FORCE" target as secondary

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Message-Id: <41f36e68-ff7e-468d-a110-46895ac3a5c7@app.fastmail.com>
Date: Wed, 17 Jul 2024 20:50:23 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Masahiro Yamada" <masahiroy@...nel.org>
Cc: "Arnd Bergmann" <arnd@...nel.org>,
 "Linus Torvalds" <torvalds@...ux-foundation.org>,
 linux-kbuild@...r.kernel.org, "Nathan Chancellor" <nathan@...nel.org>,
 "Nicolas Schier" <nicolas@...sle.eu>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: mark "FORCE" target as secondary

On Wed, Jul 17, 2024, at 18:45, Masahiro Yamada wrote:
>> On Wed, Jul 17, 2024, at 17:18, Masahiro Yamada wrote:
>>
>> Should we maybe revert ff96f5c6971c..3db80c999deb then
>> and find a better way to do it in 6.12?
>
> I do not think so.
>
> I pretty much like 4fe53bf2ba0a45cd708dcd4c3e8e1950731b3d4d,
> and I believe generating all syscall headers from a table
> is the right thing to do.
> So, it must happen.

Right, I meant to leave that part here and just revert
the Makefile changes until we have something that has
seen enough testing.

> Currently, the new syscall-y syntax can be used only for
> architectures using the generic syscall table.
> I wonder what we should do for the other legacy architectures.

I have patches for all architectures at

https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git/log/?h=syscall-tbl-6.11&id=92499ba526eac435

but I stopped after the ones using the generic syscall
table since I had spent more time making sure the actual
table contents are unchanged.

> For the rebuild problem, I think this should work:
> https://lore.kernel.org/all/20240717162421.1402773-1-masahiroy@kernel.org/T/#u
>
> (I only compile-tested arch64 and riscv, but the other architectires
> should be the same pattern.)

Right, I completely missed the "existing-targets" bit, and
without that I couldn't figure out the rest correctly.

I have checked this on the other architectures now and
tried out the bit with the changed command line I got
wrong.

Sorry for causing these problems and thanks a lot for
the fix!

     Arnd