By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), May 20, 2022 11:32 am
Room: Moderated Discussions
Brendan (btrotter.delete@this.gmail.com) on May 20, 2022 4:06 am wrote:
>
> To me, supporting dissimilar CPUs (for both "different ISA" and "same ISA with different instruction
> timings") is an interesting engineering challenge [...]
That's an odd way to spell "stupid and pointless".
We already know what the problem is. Intel already did the "expose that cores are different" thing in their desktop/laptop chips. It was an abject and fundamental failure that is basically unfixable, and Intel already disabled it.
So no, it's not an "engineering challenge". It was a broken product. It's the same kind of "engineering challenge" that Itanium was. Just give it up.
Linus
>
> To me, supporting dissimilar CPUs (for both "different ISA" and "same ISA with different instruction
> timings") is an interesting engineering challenge [...]
That's an odd way to spell "stupid and pointless".
We already know what the problem is. Intel already did the "expose that cores are different" thing in their desktop/laptop chips. It was an abject and fundamental failure that is basically unfixable, and Intel already disabled it.
So no, it's not an "engineering challenge". It was a broken product. It's the same kind of "engineering challenge" that Itanium was. Just give it up.
Linus
