ntb_perf: Allow limiting the size of the memory windows
On my system, dma_alloc_coherent won't produce memory anywhere near the size of the BAR. So I needed a way to limit this. It's pretty much copied straight from ntb_transport. Signed-off-by: NLogan Gunthorpe <logang@deltatee.com> Acked-by: NDave Jiang <dave.jiang@intel.com> Signed-off-by: NJon Mason <jdmason@kudzu.us>
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