CrimsonKnight13
Lord Stabington of [H]ard|Fortress
- Joined
- Jan 8, 2008
- Messages
- 8,440
Source: http://techreport.com/news/26911/errata-prompts-intel-to-disable-tsx-in-haswell-early-broadwell-cpusThe Tech Report said:The TSX problem was apparently discovered by a software developer outside of Intel, and the company then confirmed the erratum through its own testing. Errata of this magnitude aren't often discovered this late in the life of a CPU core.
As is customary in such cases, Intel will disable the TSX instructions in current products using a CPU microcode update delivered via new revisions of motherboard firmware. Disabling TSX should ensure stable operation for Haswell CPUs, but those chips will no longer be capable of supporting TSX's features, including hardware lock elision and restricted transactional memory.
I'm definitely not a programmer or an engineer, but I do know that it sucks when you find errata in hardware that has to be disabled. It appears that TSX hasn't hit mainstream, so this may not affect most people anyways.