Hi all,

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

  arch/loongarch/mm/init.c

between commit:

  c0defeccc630f ("mm/sparse-vmemmap: pass @pgmap argument to memory deactivation paths")

from the mm-unstable tree and commit:

  0ccc9d47cf020 ("LoongArch: Remove unused code to avoid build warning")

from the loongarch 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/loongarch/mm/init.c
index 055ecd2c8fd94,031b39eb081c5..0000000000000
--- a/arch/loongarch/mm/init.c
+++ b/arch/loongarch/mm/init.c
@@@ -124,12 -123,8 +124,8 @@@ void arch_remove_memory(u64 start, u64 
  {
  	unsigned long start_pfn = start >> PAGE_SHIFT;
  	unsigned long nr_pages = size >> PAGE_SHIFT;
- 	struct page *page = pfn_to_page(start_pfn);
  
- 	/* With altmap the first mapped page is offset from @start */
- 	if (altmap)
- 		page += vmem_altmap_offset(altmap);
 -	__remove_pages(start_pfn, nr_pages, altmap);
 +	__remove_pages(start_pfn, nr_pages, altmap, pgmap);
  }
  #endif
  

> On May 22, 2026, at 19:50, Mark Brown <broonie@kernel.org> wrote:
> 
> Hi all,
> 
> Today's linux-next merge of the loongarch tree got a conflict in:
> 
>  arch/loongarch/mm/init.c
> 
> between commit:
> 
>  c0defeccc630f ("mm/sparse-vmemmap: pass @pgmap argument to memory deactivation paths")
> 
> from the mm-unstable tree and commit:
> 
>  0ccc9d47cf020 ("LoongArch: Remove unused code to avoid build warning")
> 
> from the loongarch 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/loongarch/mm/init.c
> index 055ecd2c8fd94,031b39eb081c5..0000000000000
> --- a/arch/loongarch/mm/init.c
> +++ b/arch/loongarch/mm/init.c
> @@@ -124,12 -123,8 +124,8 @@@ void arch_remove_memory(u64 start, u64 
>  {
>   	unsigned long start_pfn = start >> PAGE_SHIFT;
>   	unsigned long nr_pages = size >> PAGE_SHIFT;
> - 	struct page *page = pfn_to_page(start_pfn);
> 
> - 	/* With altmap the first mapped page is offset from @start */
> - 	if (altmap)
> - 		page += vmem_altmap_offset(altmap);
> -	 __remove_pages(start_pfn, nr_pages, altmap);
> +	 __remove_pages(start_pfn, nr_pages, altmap, pgmap);
>  }
>  #endif

I think your fix is right.

Thanks,
Muchun