Linux 4.17 Lands Initial Spectre V4 "Speculative Store Bypass" For POWER CPUs

[phoronix]

Phoronix: Linux 4.17 Lands Initial Spectre V4 "Speculative Store Bypass" For POWER CPUs

Following yesterday's public disclosure of Spectre Variant Four, a.k.a. Speculative Store Bypass, the Intel/AMD mitigation work immediately landed while overnight the POWER CPU patch landed...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-Git-POWER-SSB-Patch

[microcode]

It'll be interesting to see how much of this state will used up being made process-local, and how many microarchitecture techniques will simply no longer be worth it, after all this dust settles.

Edit: no idea what I intended to type here, not used to typing on a smartphone.

[boxie]

It'll be interesting to see how much of this state will used up being made process-local, and how many microarchitecture techniques will simply no longer be worth it, after all this dust settles.

I am sure that there will be a bunch more silicon budget given to process isolation in the future