Roll your own QEMU for fun

Re:Roll your own QEMU for fun by snvzz on Monday September 11, 2023 @06:20PM (#37474489)

Deprecated, although of historical importance in legacy ISA.

The homologue in the standard ISA is RISC-V H extension[0], which is part of the Privileged RISC-V Specification.

Unsurprisingly, relative to VT-x, it is much simpler.

0. https://five-embeddev.com/riscv-isa-manual/latest/hypervisor...

[ Parent | on HN ]

Re:Roll your own QEMU for fun by MobiusHorizons on Monday September 11, 2023 @06:28PM (#37474567)

VT-x is not a RISC-V feature, it is a feature of x86 cpus, which is definitely not deprecated. VT-x is (as far as I know) the technology that allows acceptable speed virtualization of virtual machines, which is the backbone of cloud computing. RISC-V H extension is not applicable to intel CPUs even if it provides features that solve similar problems (ie it cannot possibly be the replacement).

https://en.wikipedia.org/wiki/X86_virtualization#Intel-VT-x

[ Parent | on HN ]

Re:Roll your own QEMU for fun by snvzz on Monday September 11, 2023 @06:34PM (#37474608)

Noted. Edited "replacement" into "homologue".

[ Parent | on HN ]