Has Intel fixed the TSX bug in Skylake ?

[Gryz]

Haswell introduced TSX (Transactional Synchronization eXtensions).
Exactly a year ago, Intel discovered a bug in their TSX implementation.
http://www.anandtech.com/show/8376/...rratum-found-in-haswell-haswelleep-broadwelly
Intel disabled TSX in Haswell and Broadwell-Y CPUs.

My questions.
- Has this bug been fixed ?
- I believe this bug is not fixable (via microcode) in Haswell CPUs. Correct ?
- Has this bug been fixed in Broadwell CPUs ? If so, which ones ?

And the most important question:
- Has this bug been fixed in all new SkyLake CPUs ?

TIA.

 

[Arachnotronic]

Haswell introduced TSX (Transactional Synchronization eXtensions).
Exactly a year ago, Intel discovered a bug in their TSX implementation.
http://www.anandtech.com/show/8376/...rratum-found-in-haswell-haswelleep-broadwelly
Intel disabled TSX in Haswell and Broadwell-Y CPUs.

My questions.
- Has this bug been fixed ?
- I believe this bug is not fixable (via microcode) in Haswell CPUs. Correct ?
- Has this bug been fixed in Broadwell CPUs ? If so, which ones ?

And the most important question:
- Has this bug been fixed in all new SkyLake CPUs ?

TIA.

- Yes
- It's fixed in Haswell-EX, but lower Haswell chips do not have the fix AFAIK
- Yes.
- Yes.

 

[mikk]

TSX has been fixed since Broadwell F0 stepping. Of course Skylake is not affected anymore from this bug.

 

[Gryz]

Thanks very much.

Those are the most exact answers I've ever seen on this forum.