RISC-V Support Continues Maturing Within The Mainline Linux Kernel

[phoronix]

Phoronix: RISC-V Support Continues Maturing Within The Mainline Linux Kernel

The initial RISC-V architecture support landed in Linux 4.15 and now this open-source, royalty-free processor ISA is seeing further improvements with the Linux 4.17 cycle...

http://www.phoronix.com/scan.php?page=news_item&px=RISC-V-Linux-4.17-Updates

[GunpowaderGuy]

Was spectre's absence confirmed in RISC v more complex cores such as Boom ?

[Modu]

AFAIK CPU ISA, and its silicon implementation are different.

[dungeon]

Was spectre's absence confirmed in RISC v more complex cores such as Boom ?

No announced RISC-V silicon is susceptible, and the popular open-source RISC-V Rocket processor is unaffected as it does not perform memory accesses speculatively.

https://riscv.org/2018/01/more-secure-world-risc-v-isa/

[coder]

Personally, I'm holding out for RISC-VI.

[rhysk]

NVIDIA has spoken in the last two years on plans to adopt RISC-V in their "Falcon Next Gen", which is their dGPU's NVIDIA proprietary control processor. There's ~10 of them on each dGPU.

Their public comments, including the two below, outline the side-by-side comparisons for their use case:

https://riscv.org/wp-content/uploads/2016/07/Tue1100_Nvidia_RISCV_Story_V2.pdf

https://riscv.org/wp-content/uploads/2017/05/Tue1345pm-NVIDIA-Sijstermans.pdf

[Jabberwocky]

Why would Samsung want RISC-V? Would it be easier to get mainline support compared to using ARM or is it purely licensing costs?

[coder]

NVIDIA has spoken in the last two years on plans to adopt RISC-V in their "Falcon Next Gen", which is their dGPU's NVIDIA proprietary control processor. There's ~10 of them on each dGPU.

I had seen all of that, but where does it say 10 per dGPU? From what I recall, it was only up to 2.

[rhysk]

I had seen all of that, but where does it say 10 per dGPU? From what I recall, it was only up to 2.

Second presentation linked, page 3. Referenced in the table on the right hand side that there are on average 10 Falcons per GPU.