Messages in this thread | | | Date | Wed, 7 Jun 2023 13:15:42 -0700 | Subject | Re: [PATCH 1/2] x86/microcode/AMD: Load late on both threads too | From | Dave Hansen <> |
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On 6/7/23 13:03, Borislav Petkov wrote: > On Wed, Jun 07, 2023 at 12:36:53PM -0700, Dave Hansen wrote: >> What's the benefit of doing the loading on both threads? I would have >> naively thought it was just wasted work. > I have the perfect example for this, see: > > e7ad18d1169c ("x86/microcode/AMD: Apply the patch early on every logical thread") > > so it is for reasons like that.
Yikes, so the second CMT thread reports a bumped version but not all the _effects_ of that version? That's, uh ... fun???
>> I think I even have a back-burnered Intel patch around somewhere that >> ensures that we *never* load on both threads. > Interesting - I guess there are considerable differences in microcode > architecture between the two. 😄
Yeah, sure seems that way.
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