Re: [PATCH 2/3] arm64: mm: reserve hugetlb CMA after numa_init

From: Roman Gushchin
Date: Tue Jun 02 2020 - 23:24:30 EST


On Wed, Jun 03, 2020 at 02:42:30PM +1200, Barry Song wrote:
> hugetlb_cma_reserve() is called at the wrong place. numa_init has not been
> done yet. so all reserved memory will be located at node0.
>
> Cc: Roman Gushchin <guro@xxxxxx>
> Signed-off-by: Barry Song <song.bao.hua@xxxxxxxxxxxxx>

Acked-by: Roman Gushchin <guro@xxxxxx>

Thanks!

> ---
> arch/arm64/mm/init.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
> index e42727e3568e..8f0e70ebb49d 100644
> --- a/arch/arm64/mm/init.c
> +++ b/arch/arm64/mm/init.c
> @@ -458,11 +458,6 @@ void __init arm64_memblock_init(void)
> high_memory = __va(memblock_end_of_DRAM() - 1) + 1;
>
> dma_contiguous_reserve(arm64_dma32_phys_limit);
> -
> -#ifdef CONFIG_ARM64_4K_PAGES
> - hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
> -#endif
> -
> }
>
> void __init bootmem_init(void)
> @@ -478,6 +473,11 @@ void __init bootmem_init(void)
> min_low_pfn = min;
>
> arm64_numa_init();
> +
> +#ifdef CONFIG_ARM64_4K_PAGES
> + hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
> +#endif
> +
> /*
> * Sparsemem tries to allocate bootmem in memory_present(), so must be
> * done after the fixed reservations.
> --
> 2.23.0
>
>