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"SuperMalloc is an implementation of malloc(3) designed for x86 Hardware Transactional Memory (HTM). It turns out that the same design also makes it fast even without HTM. "

Does anyone know if there's a cpuid feature flag for HTM? Do all haswell-generation SKUs support the feature?

That's Intel Transactional Synchronization Extensions, right? https://en.wikipedia.org/wiki/Transactional_Synchronization_...

TSX is disabled in most (all?) Haswell SKUs due to bugs.

Interesting. "In August 2014, Intel announced a bug in the TSX implementation on current steppings of Haswell, Haswell-E, Haswell-EP and early Broadwell CPUs, which resulted in disabling the TSX feature on affected CPUs via a microcode update." -- So only (non-early) Broadwell CPUs support it now?

As well as Skylake CPUs now. Check in the "TSX-NI" table entry. http://ark.intel.com/products/88191/Intel-Core-i5-6600K-Proc...

It shows that it is supported in Skylake. I guess they fixed the bugs.

Hmmm. Does anybody know if this qualifies the processor for a refund/replacement if I bought one to learn and use TSX?

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