Re: OpenBSD 6.8 (release) guest (qemu/kvm) on Linux 5.9 host (amd64) fails with protection fault trap

On 16/11/2020 20:40, Philip Guenther wrote:
> Looks like qemu fails to behave like a real AMD CPU by failing to handle
> the wrmsr() for that errata. Also the kernel you're running it on is
> failing to apply the errata itself (because otherwise OpenBSD won't be
> trying to flip the bit itself). Go shake an AMD errata document at the
> qemu people and figure out why your host kernel isn't applying a documented
> fix.
Thanks! This is very helpful - I will figure out why both my host kernel
isn't applying the errata and report to qemu.