Virtualization Megathread V2: VMs inside VMs

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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > Virtualization Megathread V2: VMs inside VMs

ExcessBLarg!: Sep 1, 2001

BlankSystemDaemon posted:

Is there any virtualization on x86 or its derivatives, other than that of VMware, that doesn't use hardware-accelerated virtualization with SLAT (aka AMD Vi/Intel VT-x)?

Qemu used to have a Linux kernel module, KQemu, that provided ring 3 (userspace) virtualization before KVM effectively replaced it.

# ¿ Jan 29, 2024 21:11

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# ¿ Apr 27, 2024 09:13

ExcessBLarg!: Sep 1, 2001

BlankSystemDaemon posted:

Was it part of the kernel? Because the obsolete documentation I can find seems to indicate it was a loadable module people would compile on their own.

It was a loadable kernel module, so the code ran in kernel space, but the code did not ship with the Linux source tree.

# ¿ Jan 30, 2024 16:04

ExcessBLarg!: Sep 1, 2001

BlankSystemDaemon posted:

To be fair, hardware-accelerated virtualization and SLAT wasn't really available on x86 until Nahelem and Orleans

The 80386 had v8086 mode all the way back on 1985. Who needs 32-bit OSes anyways?

# ¿ Mar 9, 2024 01:34

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > Virtualization Megathread V2: VMs inside VMs