Re: [PATCH v6 12/13] mm/hmm: Add flag to track device private pages
From: David Hildenbrand (Arm)
Date: Fri Mar 06 2026 - 11:09:05 EST
On 2/2/26 12:36, Jordan Niethe wrote:
> A future change will remove device private pages from the physical
> address space. This will mean that device private pages no longer have
> normal pfns and must be handled separately.
>
> Prepare for this by adding a HMM_PFN_DEVICE_PRIVATE flag to indicate
> that a hmm_pfn contains a PFN for a device private page.
>
> Signed-off-by: Jordan Niethe <jniethe@xxxxxxxxxx>
> Signed-off-by: Alistair Popple <apopple@xxxxxxxxxx>
That makes sense to me.
--
Cheers,
David