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Groups > linux.kernel > #1526330
| From | Balbir Singh <bsingharora@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [HMM v13 07/18] mm/ZONE_DEVICE/x86: add support for un-addressable device memory |
| Date | 2016-11-21 03:10 +0100 |
| Message-ID | <sFMdr-3fW-3@gated-at.bofh.it> (permalink) |
| References | <sEUZr-1B7-3@gated-at.bofh.it> <sEUZr-1B7-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 19/11/16 05:18, Jérôme Glisse wrote: > It does not need much, just skip populating kernel linear mapping > for range of un-addressable device memory (it is pick so that there > is no physical memory resource overlapping it). All the logic is in > share mm code. > > Only support x86-64 as this feature doesn't make much sense with > constrained virtual address space of 32bits architecture. > Is there a reason this would not work on powerpc64 for example? Could you document the limitations -- testing/APIs/missing features? Balbir Singh.
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[HMM v13 07/18] mm/ZONE_DEVICE/x86: add support for un-addressable device memory Jérôme Glisse <jglisse@redhat.com> - 2016-11-18 18:20 +0100
Re: [HMM v13 07/18] mm/ZONE_DEVICE/x86: add support for un-addressable device memory Balbir Singh <bsingharora@gmail.com> - 2016-11-21 03:10 +0100
Re: [HMM v13 07/18] mm/ZONE_DEVICE/x86: add support for un-addressable device memory Jerome Glisse <jglisse@redhat.com> - 2016-11-21 06:10 +0100
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