Messages in this thread |  | | From | Logan Gunthorpe <> | Date | Thu, 1 Mar 2018 14:45:09 -0700 | Subject | Re: [PATCH v2 00/10] Copy Offload in NVMe Fabrics with P2P PCI Memory |
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On 01/03/18 02:37 PM, Dan Williams wrote: > Ah ok, I'd need to look at the details. I had been assuming that > sparse-vmemmap could handle such a situation, but that could indeed be > a broken assumption.
It handles it fine for many situations. But when you try to map something that is at the end of the physical address space then the spares-vmemmap needs virtual address space that's the size of the physical address space divided by PAGE_SIZE which may be a little bit too large...
Logan
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