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SRQ uses a quantized and scaled page_offset, which is another variation of ib_umem_find_best_pgsz(). Add mlx5_umem_find_best_quantized_pgoff() to perform this calculation for each mailbox. A macro shows how the calculation is directly connected to the mailbox format. This new routine replaces the limited mlx5_ib_cont_pages() and mlx5_ib_get_buf_offset() pairing which would reject valid configurations rather than adjust the page_size to make it work. In turn this is much more aggressive about choosing large page sizes for these objects and when THP is enabled it will now often find a single page solution. Link: https://lore.kernel.org/r/20201115114311.136250-2-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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