Re: [PATCH v3] acpi: Fix ARM32 platforms compile issue introduced by fw_table changes

[Linus Walleij]

On Wed, Nov 22, 2023 at 10:32 PM Dan Williams <dan.j.williams@xxxxxxxxx> wrote:

> It concerns me that neither linux-next nor 0day robot exposure reported
> this problem.
>
> Does ARM32 require manual compilation coverage these days or was this
> just a series of unfortunate events that the build bots missed this?

It's not just ARM32, I saw it on ARM64 as well and I'm pretty
sure it appears on any bare metal "none" compiler.

kernel.org host "nolibc" cross compilers (Arnd makes these):
https://mirrors.edge.kernel.org/pub/tools/crosstool/
and those WORK, because they use the kernel minimal
libc which defines __linux__.

So a "nolibc" compiler works but not "none" compilers.

I think the test robots all use Arnds nolibc compilers or the
compilers from distributions so they don't see this.

A typical example of breaking compilers: ARMs supported
"none" compilers:
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads

Yours,
Linus Walleij