AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
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Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#2Full title: AMD will reinstate memory encryption on Ryzen 9000 CPUs through a BIOS update in July — TSME is coming back after 'valuable community feedback'
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#3[flagged]
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#4People don’t like things being taken away, even if I don’t think many people are actually using this feature.
I don’t even think its exposed in most BIOS’s
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#5They’ve been doing a bunch of stuff in agesa updates regarding memory stability lately, and also recently broke and fixed setting manual speed on DDR5 memory with ECC enabled (basically any setting higher or lower than 5200mhz or something was ignored).
I wonder if this was also something they just accidentally broke, or if it was an incompetent attempt at larger segmentation.
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#6Good. Intel's equivalent processors have this feature and BS market segmentation is the kind of thing that AMD was historically against. Even if something wasn't officially supported, they didn't go out of their way to prevent its use.
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#7Thought there were cases where other devices could have direct access to RAM (e.g. DMA, PCIe controllers outside the CPU, etc.). Wonder how that works in conjunction.
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#8I'm a little puzzled by the uproar given that all the oneline chatter seems to suggest nobody is using this. If this was AVX512 or something I could understand the give it back reaction...
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#9They’ve been doing a bunch of stuff in agesa updates regarding memory stability lately, and also recently broke and fixed setting manual speed on DDR5 memory with ECC enabled (basically any setting higher or lower than 5200mhz or something was ignored). I wonder if this was also something they just accidentally broke, or if it was an incompetent attempt at larger segmentation.
> I wonder if this was also something they just accidentally broke
Their statement suggests it was a calculated decision, reversed after public backlash. I greatly appreciate they listened to user feedback, but they shouldn't have done it secretly to begin with.
> Based on valuable community feedback, we will reinstate this option in an upcoming BIOS release in July.
Re: AMD will reinstate memory encryption on Ryzen 9000 CPUs via BIOS update in July
#10Thought there were cases where other devices could have direct access to RAM (e.g. DMA, PCIe controllers outside the CPU, etc.). Wonder how that works in conjunction.
The encryption/decryption is done in the memory controller so it doesn't matter where the access is coming from.