Linux BHI Mitigation Being Tweaked Following 12% Database Performance Hit

[phoronix]

Phoronix: Linux BHI Mitigation Being Tweaked Following 12% Database Performance Hit

A new set of Linux kernel patches were sent out on Friday for tweaking th Native BHI mitigation introduced earlier this month for Intel processors...

https://www.phoronix.com/news/Linux-BHI-Fix-Server-Perf

[bezirg]

Is this going to be backported?

[Weasel]

No mitigations, no problems.

[furtadopires]

It's 12% hit in performance compared to no mitigations, or 12% added to the previous performance hit from the other mitigations?

[Michael]

It's 12% hit in performance compared to no mitigations, or 12% added to the previous performance hit from the other mitigations?

added on top

[EphemeralEft]

No mitigations, no problems.

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[Old Nobody]

I would not have expected that Intel still cares about Skylake. Nice!

[kylew77]

Well Intel if you don't want your processors to look bad and others beat them, maybe design them without hardware bugs built in?

[ehofman]

I wonder; wouldn't it be enough for most systems to only mitigate those vulnerabilities in the network code?
The only systems that are realy affected are those that are used by multiple users at once, like cloud servers.

[Serafean]

I wonder; wouldn't it be enough for most systems to only mitigate those vulnerabilities in the network code?
The only systems that are realy affected are those that are used by multiple users at once, like cloud servers.

That is one of the things (conceptually speaking: s/networking/virtualization) they added:

These latest BHI patches also add a "spectre_bhi=vmexit"