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To: sl@stanleylieber.com, 9front@9front.org
Subject: Re: [9front] vmx(1) vs openbsd
Date: Wed, 24 Jun 2020 20:48:29 -0700
From: ori@eigenstate.org
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X-Glyph: ➈
X-Bullshit: extensible flexible hosting-scale property framework 

> http://plan9.stanleylieber.com/hardware/thinkpad/x210/pre-1st-gen-1920x1200/sysinfo
> 
> vmx -M 2G -n ether0 -d /dev/sdE1/data -v vesa:1280x800 /tmp/bsd.67 device=sd0a
> 
> http://plan9.stanleylieber.com/vmx/img/20200624.vmx.openbsd67.png
> 
> vmx(1) itself did not crash.  is there something maybe wonky with my machine's
> support for intel virtualization extensions?  i had no trouble booting openbsd
>  on my x250[0], but this is the first time i've tried to boot a local disk
> guest from a tls-booted host.
> 
> sl
> 
> [0] http://plan9.stanleylieber.com/hardware/thinkpad/x250/20cm-cto1ww/sysinfo

xgetbv is an instruction that we probably don't emulate yet.
Seems to be somethign that OpenBSD calls as part of the
spectre-class attack mitigations. (Specifically, MDS).

We can probably work around it by lying around cpuid,
but it'd be better to fix it right. Not sure what that
means yet.