Re: [PATCH RESEND 3/3] mm: introduce ARCH_HAS_PTE_DEVMAP

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Apr 12, 2019 at 12:02 PM Robin Murphy <robin.murphy@xxxxxxx> wrote:
>
> ARCH_HAS_ZONE_DEVICE is somewhat meaningless in itself, and combined
> with the long-out-of-date comment can lead to the impression than an
> architecture may just enable it (since __add_pages() now "comprehends
> device memory" for itself) and expect things to work.
>
> In practice, however, ZONE_DEVICE users have little chance of
> functioning correctly without __HAVE_ARCH_PTE_DEVMAP, so let's clean
> that up the same way as ARCH_HAS_PTE_SPECIAL and make it the proper
> dependency so the real situation is clearer.

Looks good to me.

Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux