It's based on a bad chip that violates the privileged spec, by having a hardware pinned TLB entry. On a really bad memory location that breaks standard Linux us

It's based on a bad chip that violates the privileged spec, by having a hardware pinned TLB entry. On a really bad memory location that breaks standard Linux userspace. It will never be able to run standard distributions, only bespoke for the device. Categorically avoid, and hope the next generation Renesas chip is less dumb.