[RFC PATCH 04/15] lib/scatterlist: Add flag for indicating P2PDMA segments in an SGL

[Logan Gunthorpe]

On 2020-11-09 2:12 a.m., Christoph Hellwig wrote:
> On Fri, Nov 06, 2020 at 10:00:25AM -0700, Logan Gunthorpe wrote:
>> We make use of the top bit of the dma_length to indicate a P2PDMA
>> segment.
> 
> I don't think "we" can.  There is nothing limiting the size of a SGL
> segment.

Yes, I expected this would be the unacceptable part. Any alternative ideas?

Logan