Re: [HMM v14 05/16] mm/ZONE_DEVICE/unaddressable: add support for un-addressable device memory

From: Dave Hansen
Date: Thu Dec 08 2016 - 11:22:08 EST

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On 12/08/2016 08:39 AM, JÃrÃme Glisse wrote:
> Architecture that wish to support un-addressable device memory should make
> sure to never populate the kernel linar mapping for the physical range.

Does the platform somehow provide a range of physical addresses for this
unaddressable area? How do we know no memory will be hot-added in a
range we're using for unaddressable device memory, for instance?

Next message: Kirill A. Shutemov: "[RFC, PATCHv1 03/28] arch, mm: convert all architectures to use 5level-fixup.h"
Previous message: Vinod Koul: "Re: Tearing down DMA transfer setup after DMA client has finished"
In reply to: JÃrÃme Glisse: "[HMM v14 05/16] mm/ZONE_DEVICE/unaddressable: add support for un-addressable device memory"
Next in thread: Jerome Glisse: "Re: [HMM v14 05/16] mm/ZONE_DEVICE/unaddressable: add support for un-addressable device memory"
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