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Add -b <bytes> to request a non-default niov size via NETDEV_A_DMABUF_RX_PAGE_SIZE. When the value exceeds PAGE_SIZE, udmabuf_alloc() switches to an MFD_HUGETLB-backed memfd so each 2 MB hugepage produces one naturally-aligned sg entry. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260805-tcpdm-large-niovs-v8-2-3e0225e2808c@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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