linux-next: manual merge of the kbuild-current tree with the origin tree

linux-next: manual merge of the kbuild-current tree with the origin tree

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 1511 bytes --]

Hi all,

Today's linux-next merge of the kbuild-current tree got a conflict in:

  arch/alpha/boot/Makefile

between commit:

  c437950dceb88 ("alpha: add self-extracting compressed kernel boot stub")

from the origin tree and commit:

  0d4d70da348b0 ("kbuild: Mark the gzip recipes as recursive")

from the kbuild-current tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

diff --cc arch/alpha/boot/Makefile
index 7c2a41c1e2a06,b050753e90157..0000000000000
--- a/arch/alpha/boot/Makefile
+++ b/arch/alpha/boot/Makefile
@@@ -39,14 -38,9 +39,14 @@@ ifdef INITR
  	cat $(INITRD) >> $@
  endif
  
 -# Compressed kernel image
 -$(obj)/vmlinux.gz: $(obj)/vmlinux FORCE
 -	+$(call if_changed,gzip)
 +# Self-extracting compressed kernel image: a small ELF stub (see
 +# compressed/) with the real vmlinux linked in compressed, which aboot
 +# loads and enters like a plain vmlinux.
 +$(obj)/compressed/vmlinux: vmlinux FORCE
 +	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
 +
 +$(obj)/vmlinuz: $(obj)/compressed/vmlinux FORCE
- 	$(call if_changed,copy)
++	+$(call if_changed,copy)
  	@echo '  Kernel $@ is ready'
  
  $(obj)/main.o: $(obj)/ksize.h

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

Re: linux-next: manual merge of the kbuild-current tree with the origin tree

[Magnus Lindholm]

Hi Mark,

On Wed, Oct 21, 2026 at 1:01 PM Mark Brown <broonie@kernel.org> wrote:
>
> Hi all,
>
> Today's linux-next merge of the kbuild-current tree got a conflict in:
>
>   arch/alpha/boot/Makefile
>
> between commit:
>
>   c437950dceb88 ("alpha: add self-extracting compressed kernel boot stub")
>
> from the origin tree and commit:
>
>   0d4d70da348b0 ("kbuild: Mark the gzip recipes as recursive")
>
> from the kbuild-current tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> diff --cc arch/alpha/boot/Makefile
> index 7c2a41c1e2a06,b050753e90157..0000000000000
> --- a/arch/alpha/boot/Makefile
> +++ b/arch/alpha/boot/Makefile
> @@@ -39,14 -38,9 +39,14 @@@ ifdef INITR
>         cat $(INITRD) >> $@
>   endif
>
>  -# Compressed kernel image
>  -$(obj)/vmlinux.gz: $(obj)/vmlinux FORCE
>  -      +$(call if_changed,gzip)
>  +# Self-extracting compressed kernel image: a small ELF stub (see
>  +# compressed/) with the real vmlinux linked in compressed, which aboot
>  +# loads and enters like a plain vmlinux.
>  +$(obj)/compressed/vmlinux: vmlinux FORCE
>  +      $(Q)$(MAKE) $(build)=$(obj)/compressed $@
>  +
>  +$(obj)/vmlinuz: $(obj)/compressed/vmlinux FORCE
> -       $(call if_changed,copy)
> ++      +$(call if_changed,copy)
>         @echo '  Kernel $@ is ready'
>

Thanks for resolving this.

This recipe now only copies the completed image, so I think it
should stay without '+'. Matt's series moved compression into
arch/alpha/boot/compressed/Makefile, where the change should be:

 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
- $(call if_changed,gzip)
+ +$(call if_changed,gzip)

The existing vmlinux.nh.gz gzip recipe in arch/alpha/boot/Makefile
still needs the '+' from the kbuild patch.

Maybe adjust the resolution accordingly?

Thanks,
Magnus

>   $(obj)/main.o: $(obj)/ksize.h