On Thu, Feb 23, 2023 at 7:30 PM Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>
> FEN fault fix deals with a really old oopsable braino
My old alpha architecture manual doesn't even list "clrfen" as a
PAL-code instruction.
It does have "wrfen", but that's privileged.
I have no idea when clrfen became a thing. But it's clearly a later
addition that somebody didn't think through.
Linus
