LV. 30
GP 336

RE:【情報】Intel CPU嚴重漏洞,修復後會降低約30%性能

樓主 Alex nick2005
GP5 BP-
Linus Torvalds
爆氣對Intel開罵了...
https://lkml.org/lkml/2018/1/3/797

Why is this all done without any configuration options?

A *competent* CPU engineer would fix this by making sure speculation doesn't happen across protection domains. Maybe even a L1 I$ that is keyed by CPL.

I think somebody inside of Intel needs to really take a long hard look at their CPU's, and actually admit that they have issues instead of writing PR blurbs that say that everything works as designed.

.. and that really means that all these mitigation patches should be written with "not all CPU's are crap" in mind.

Or is Intel basically saying "we are committed to selling you shit forever and ever, and never fixing anything"?

Because if that's the case, maybe we should start looking towards the ARM64 people more.

Please talk to management. Because I really see exactly two possibibilities:

- Intel never intends to fix anything

OR

- these workarounds should have a way to disable them.

Which of the two is it?

                   Linus

簡單來說
1是砲Intel賣...
2是砲別人沒Bug為何也要跟你一起慘...
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1319 筆精華,08/17 更新
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