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Re: [Xen-devel] [PATCH v2 06/21] memblock: memblock_phys_alloc_try_nid(): don't panic



On Mon, Jan 21, 2019 at 10:03:53AM +0200, Mike Rapoport wrote:
> diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
> index ae34e3a..2c61ea4 100644
> --- a/arch/arm64/mm/numa.c
> +++ b/arch/arm64/mm/numa.c
> @@ -237,6 +237,10 @@ static void __init setup_node_data(int nid, u64 
> start_pfn, u64 end_pfn)
>               pr_info("Initmem setup node %d [<memory-less node>]\n", nid);
>  
>       nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
> +     if (!nd_pa)
> +             panic("Cannot allocate %zu bytes for node %d data\n",
> +                   nd_size, nid);
> +
>       nd = __va(nd_pa);
>  
>       /* report and initialize */

Does it mean that memblock_phys_alloc_try_nid() never returns valid
physical memory starting at 0?

-- 
Catalin

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