core/memory.cc: increase max_cpu hard limit #3030
Description
HEAD: b61147f
Description
Today we have a following line in memory.cc:
static constexpr unsigned max_cpus = 256;
This effectively prevents seastar from supporting platforms with a larger amount of CPUs, e.g. https://www.delltechnologies.com/asset/en-us/products/servers/technical-support/poweredge-r6625-spec-sheet.pdf with two AMD EPYC 4th Generation 9004 processors (which will total in 512 HTs).