Comment 13 for bug 1856335

Hello,

I took a look today at the layouts when using 1950X (which previously worked, and yes, admittedly, I am using Windows / coreinfo), and any basic config (previously something simple as Sockets=1,Cores=8, Theads=1 (now also Dies=1) worked, but now, the topology presents as if all cores share L3, and that each two cores share L1C/L1D/L2, like if they were smt-siblings. I would call this a serious regression.

I don't think using Numa Nodes is an ok way to solve this (especially not when at least for 4CCX CPUs, this worked flawlessly before), as that will make numa-aware applications start taking note of numa nodes, and possibly do wierd things (plus, it introduces more configuration where it was not needed before).