Re: [PATCH v3 2/2] mm/page_alloc: fix memmap_init_zone pageblock alignment

[Sudeep Holla]

On 12/03/18 16:51, Daniel Vacek wrote:
[...]

> 
> Hmm, does it step back perhaps?
> 
> Can you check if below cures the boot hang?
> 

Yes it does fix the boot hang.

> --nX
> 
> ~~~~
> neelx@metal:~/nX/src/linux$ git diff
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 3d974cb2a1a1..415571120bbd 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -5365,8 +5365,10 @@ void __meminit memmap_init_zone(unsigned long
> size, int nid, unsigned long zone,
>                          * the valid region but still depends on correct page
>                          * metadata.
>                          */
> -                       pfn = (memblock_next_valid_pfn(pfn, end_pfn) &
> +                       unsigned long next_pfn;
> +                       next_pfn = (memblock_next_valid_pfn(pfn, end_pfn) &
>                                         ~(pageblock_nr_pages-1)) - 1;
> +                       pfn = max(next_pfn, pfn);
>  #endif
>                         continue;
>                 }
> ~~~~
> 

-- 
Regards,
Sudeep