| 15 Mar 2026 |
dramforever | yes, i think it is reasonable to say "we want fast chips with virtualization and X features and Y features for builders" | 01:21:04 |
hexa | it was my impression that hardware virtualisation was not a consistent thing before the rv23a profile | 01:22:09 |
hexa | * it was my impression that hardware virtualisation instructions were not consistenyl available before the rv23a profile | 01:22:33 |
hexa | * it was my impression that hardware virtualisation instructions were not consistently available before the rv23a profile | 01:22:42 |
dramforever | generally rva23 riscv machines are not available | 01:24:03 |
dramforever | * | 01:24:11 |
dramforever | they will be available starting late? april with spacemit k3 | 01:24:26 |
dramforever | until then you only have rva23 machines if you're some insider | 01:25:32 |
hexa | is the s pacemit k3 in any way interesting for us? | 01:28:14 |
hexa | * is the spacemit k3 in any way interesting for us? | 01:28:18 |
dramforever | it will have 8 cores (or 16 cores if you add hacks), virtualization, rva23, quite a bit of pcie | 01:29:38 |
dramforever | * | 01:29:52 |
hexa | we can always start playing with risc-v on staging-hydra btw | 01:35:42 |
dramforever | oh also good effort and progress from spacemit and others sending drivers to mainline kernel, that's important. not there yet but they're hard at work at it - not a thing you see often for vendors | 01:36:06 |
hexa | yeah, eventually running a mainline kernel is a big plus | 01:36:36 |
Alyssa Ross | KVM works without the virtualization extensions by falling back to some software stuff though, right? | 10:00:18 |
dramforever | which is really slow | 10:03:34 |
dramforever | it falls back to binary translation | 10:03:38 |
dramforever | oh, i mean qemu does that | 10:04:03 |
dramforever | kvm just does not exist without hardware support | 10:04:15 |
Alyssa Ross | I specifically remember that KVM on RISC-V can get by without the H extension | 10:04:53 |
Alyssa Ross | I think it was in a talk at KVM Forum last year but I could be wrong about that | 10:06:20 |
dramforever | afaict anything doing that is too theoretical to work | 10:07:23 |
Alyssa Ross | appears I am wrong | 10:15:34 |
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| 22 May 2021 |
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