netdev - Re: [net-next PATCH RFC 1/8] page_pool: add helper functions for DMA

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Date:   Sat, 8 Dec 2018 09:55:29 +0200
From:   Ilias Apalodimas <ilias.apalodimas@...aro.org>
To:     David Miller <davem@...emloft.net>
Cc:     brouer@...hat.com, netdev@...r.kernel.org, toke@...e.dk,
        ard.biesheuvel@...aro.org, jasowang@...hat.com,
        bjorn.topel@...el.com, w@....eu, saeedm@...lanox.com,
        mykyta.iziumtsev@...il.com, borkmann@...earbox.net,
        alexei.starovoitov@...il.com, tariqt@...lanox.com
Subject: Re: [net-next PATCH RFC 1/8] page_pool: add helper functions for DMA

On Fri, Dec 07, 2018 at 11:06:55PM -0800, David Miller wrote:

> This isn't going to work on 32-bit platforms where dma_addr_t is a u64,
> because the page private is unsigned long.
> 
> Grep for PHY_ADDR_T_64BIT under arch/ to see the vast majority of the
> cases where this happens, then ARCH_DMA_ADDR_T_64BIT.

Noted, thanks for the heads up.

Thanks
/Ilias