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0 pointsthehappypm5y ago0 comments

That's the real nightmare. Now all of a sudden, you can program the CPU itself if you can access the update mechanism. CPUs being non-programmable is a feature as well as a bug.

0 comments

deelowe5y ago

CPUs are already "programmable" via microcode updates.

cwzwarich5y ago

Pretty much every new non-x86 CPU doesn't have updatable microcode, so that's a very x86-centric problem.

gtsteve5y ago

Microcode is loaded when the OS starts though right? At the very least it's not persistent.

deelowe5y ago

BIOS or OS

pjmlp5y ago

And have been since ages, that was one of the themes regarding RISC Vs CISC design.

j / k navigate · click thread line to collapse

0 pointsthehappypm5y ago0 comments

That's the real nightmare. Now all of a sudden, you can program the CPU itself if you can access the update mechanism. CPUs being non-programmable is a feature as well as a bug.

0 comments

deelowe5y ago

CPUs are already "programmable" via microcode updates.

cwzwarich5y ago

Pretty much every new non-x86 CPU doesn't have updatable microcode, so that's a very x86-centric problem.

gtsteve5y ago

Microcode is loaded when the OS starts though right? At the very least it's not persistent.

deelowe5y ago

BIOS or OS

pjmlp5y ago

And have been since ages, that was one of the themes regarding RISC Vs CISC design.

j / k navigate · click thread line to collapse