Updated Intel Microcode Not Causing Any Significant Performance Impact On Linux

[trubicoid2]

I see, that is why there is no difference in Michaels' tests using retpoline and retpoline+microcode.

[duby229]

Yes, with microcode you need IBRS patches, but apparently you don't need retpoline patches. Or vice-versa, with retpolie you don't need IBRS and microcode. That was my point.

I don't think that's true. I was under the impression retpoline needed the microcode updates in order to actually. retpoline by itself does not resolve without the updated microcode. Is that correct? Did I misunderstand?

[trubicoid2]

I thought retpoline patches are enough. BTW is the article gone?

[sleeksorrow]

Will the article come back again? I found that content really valuable and miss it when discussing the issues with colleagues.