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>Now if we can just start by getting Amd PSP and Intel ME removed! The first CPU manufacturer to do this is going to gain huge marketshare. (hint hint AMD!) Th
by hlandau 8y ago
>Now if we can just start by getting Amd PSP and Intel ME removed! The first CPU manufacturer to do this is going to gain huge marketshare. (hint hint AMD!)
This is impossible. The ME/PSP are instrumental in the boot process; modern multi-core CPUs are complicated to initialise and these chips generally need substantial initialisation before the main cores are ready to execute instructions. This role is not something put in there gratuitously out of malice to stop people removing it.
The problem is not with having the ME/PSP as an auxillary core per se, but that it only executes closed-source vendor provided blobs (nor is documentation available to allow an alternative to be made), and more critically that it only executes vendor-signed code, precluding owner control.
The ME/PSP are also used to implement DRM, so Intel and AMD are not only not unlikely to ever enable owner control of the ME/PSP, it is likely they are contractually prohibited from doing so. I've previously explained this: https://www.devever.net/~hl/intelme https://www.devever.net/~hl/intelme
- nickpsecurity 8y ago"The ME/PSP are instrumental in the boot process; modern multi-core CPUs are complicated to initialise and these chips generally need substantial initialisation before the main cores are ready to execute instructions. This role is not something put in there gratuitously out of malice to stop people removing it." Then they need to put something in that does that instead of always-on, networked backdoor you cant disable. There's a huge gap between what you described and what they're doing. They also used to build complex, custom CPU's without it. So, we know it's unnecessary from their prior products. I'd rather use the space for an extra core, a low-latency GC, TCP/IP offlad, etc. A lot of stuff people or companies might pay for who didnt want or use ME. The enterprises that want ME can buy chips with it.