netdev - Re: [PATCH net-next v2 4/9] gve: Add support for dma

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Date:   Tue, 1 Sep 2020 17:34:10 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     David Awogbemila <awogbemila@...gle.com>
Cc:     netdev@...r.kernel.org, Catherine Sullivan <csully@...gle.com>,
        Yangchun Fu <yangchun@...gle.com>
Subject: Re: [PATCH net-next v2 4/9] gve: Add support for dma_mask register

On Tue,  1 Sep 2020 14:51:44 -0700 David Awogbemila wrote:
> From: Catherine Sullivan <csully@...gle.com>
> 
> Add the dma_mask register and read it to set the dma_masks.
> gve_alloc_page will alloc_page with:
>  GFP_DMA if priv->dma_mask is 24,
>  GFP_DMA32 if priv->dma_mask is 32.

What about Andrew's request to CC someone who can review this for
correctness?

What's your use case here? Do you really have devices with 24bit
addressing?