Hi Dave, What if just to use highest bit of key as free mark?
While having clib_crc32c_uses_intrinsics defined, hash result will be 32bit only, highest bit of 64bit key is completely “free”. If not defined, - highest but can be just stripped off while computation in clib_bihash_*. With such approach, 64bit key update will be atomic, no special (and therefore – never about to be used) value will be necessary, can it work? -- Best Regards, Vladislav Grishenko
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