He said that some new hardware features are being added to fix the problems are hitting the CPU hard and are getting too expensive.

Torvalds said:"Honestly, I'm pretty damn fed up with buggy hardware and entirely theoretical attacks that have never actually shown themselves to be used in practice.

He said it was time to push back on the hardware people.

“We need to tell them it's *THEIR* damn problem, and if they can't even be bothered to say yay-or-nay, we just sit tight. Because dammit, let's put the onus on where the blame lies, and not just take any random shit from bad hardware and say 'oh, but it *might* be a problem.'"

According to Phoronix, Torvald’s beef came after some suggested code likely doesn't work for Intel CPUs with LAM like Arrow Lake and Lunar Lake. But in the lack of certainty around some CPU behaviour, modifying some kernel code pre-emptively was suggested.

On the matter of new Intel LAM CPUs, Intel engineer Kirill Shutemov commented this morning on that thread that LAM brings own speculation issues that LASS will address. There was a patch to disable LAM until LASS is landed, but it never got applied for some reason.