When adding generation for the kernel internal constants for hwcaps the
generated file was not explicitly flagged as such in the build system,
causing it to be regenerated on each build. This wasn't obvious when the
series the change was included in was developed since it was all about
changes that trigger rebuilds anyway.

Fixes: abed23c3c44f5 (arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps)
Reported-by: Marek Vasut <marex@nabladev.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/include/asm/Kbuild | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
index d2ff8f6c3231..31441790b808 100644
--- a/arch/arm64/include/asm/Kbuild
+++ b/arch/arm64/include/asm/Kbuild
@@ -17,4 +17,5 @@ generic-y += parport.h
 generic-y += user.h
 
 generated-y += cpucap-defs.h
+generated-y += kernel-hwcap.h
 generated-y += sysreg-defs.h

---
base-commit: abed23c3c44f565dc812563ac015be70dd61e97b
change-id: 20260413-arm64-hwcap-gen-fix-ecb4bb6dbb91

Best regards,
--  
Mark Brown <broonie@kernel.org>

On Mon, 13 Apr 2026 at 17:46, Mark Brown <broonie@kernel.org> wrote:
> When adding generation for the kernel internal constants for hwcaps the
> generated file was not explicitly flagged as such in the build system,
> causing it to be regenerated on each build. This wasn't obvious when the
> series the change was included in was developed since it was all about
> changes that trigger rebuilds anyway.
>
> Fixes: abed23c3c44f5 (arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps)
> Reported-by: Marek Vasut <marex@nabladev.com>
> Signed-off-by: Mark Brown <broonie@kernel.org>

Just noticed the issue, bisected it, and found a link to the fix...

Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

On Mon, 13 Apr 2026 16:44:11 +0100, Mark Brown wrote:
> When adding generation for the kernel internal constants for hwcaps the
> generated file was not explicitly flagged as such in the build system,
> causing it to be regenerated on each build. This wasn't obvious when the
> series the change was included in was developed since it was all about
> changes that trigger rebuilds anyway.
> 
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64/hwcap: Include kernel-hwcap.h in list of generated files
      https://git.kernel.org/arm64/c/680b961ebf41

On 13/04/26 9:14 PM, Mark Brown wrote:
> When adding generation for the kernel internal constants for hwcaps the
> generated file was not explicitly flagged as such in the build system,
> causing it to be regenerated on each build. This wasn't obvious when the
> series the change was included in was developed since it was all about
> changes that trigger rebuilds anyway.
> 
> Fixes: abed23c3c44f5 (arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps)
> Reported-by: Marek Vasut <marex@nabladev.com>
> Signed-off-by: Mark Brown <broonie@kernel.org>

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>

> ---
>  arch/arm64/include/asm/Kbuild | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
> index d2ff8f6c3231..31441790b808 100644
> --- a/arch/arm64/include/asm/Kbuild
> +++ b/arch/arm64/include/asm/Kbuild
> @@ -17,4 +17,5 @@ generic-y += parport.h
>  generic-y += user.h
>  
>  generated-y += cpucap-defs.h
> +generated-y += kernel-hwcap.h
>  generated-y += sysreg-defs.h
> 
> ---
> base-commit: abed23c3c44f565dc812563ac015be70dd61e97b
> change-id: 20260413-arm64-hwcap-gen-fix-ecb4bb6dbb91
> 
> Best regards,
> --  
> Mark Brown <broonie@kernel.org>
> 
>