Source: Hacker News
Article note: All Intel's recent transactional memory and hardware security stuff has not actually worked for their intended purpose, so this is better than bullshitting and doubling down.
AFIK SPARC is the only current living (...ish) architecture with usable memory tagging of any sort at the moment (ADI features in Solaris), though Arm8.5 specifies Memory Tagging Extensions.
Having done an MS in the area, its sort of impressive how many times there have been memory tagging efforts to varying degrees of ambition in computer designs, how useful they can be, and how few of them have panned out.
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