RE: [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64

[Peng Fan]

Hi Russell, Stefano

> Subject: [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64

Any comments?

> 
> arm64 shares some code under arch/arm/xen, including mm.c.
> However ZONE_DMA is removed by commit
> ad67f5a6545("arm64: replace ZONE_DMA with ZONE_DMA32").
> So to ARM64, need use __GFP_DMA32.
> 
> Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> ---
>  arch/arm/xen/mm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index
> e1d44b903dfc..a95e76d18bf9 100644
> --- a/arch/arm/xen/mm.c
> +++ b/arch/arm/xen/mm.c
> @@ -27,7 +27,7 @@ unsigned long xen_get_swiotlb_free_pages(unsigned int
> order)
> 
>  	for_each_memblock(memory, reg) {
>  		if (reg->base < (phys_addr_t)0xffffffff) {
> -			flags |= __GFP_DMA;
> +			flags |= __GFP_DMA | __GFP_DMA32;
>  			break;
>  		}
>  	}

Thanks,
Peng.

> --
> 2.16.4