Re: [RFC PATCH 1/7] x86, mm: ZONE_DEVICE for "device memory"

[Dan Williams]

On Tue, Aug 18, 2015 at 12:06 PM, Jerome Glisse <j.glisse@xxxxxxxxx> wrote:
> On Tue, Aug 18, 2015 at 10:23:38AM -0700, Dan Williams wrote:
> Thought maybe you don't need a new ZONE_DEV and all you need is valid
> struct page for this device memory, and you don't want this page to be
> useable by the general memory allocator. There is surely other ways to
> achieve that like marking all as reserved when you hotplug them.
>

Yes, there are other ways that can achieve the same thing, but I do
like the ability to do reverse page to zone lookups for debug if
anything.
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