Wednesday, September 02, 2020

Re: VMM vulns?

On Wed, Sep 02, 2020 at 02:03:35AM -0700, Mike Larkin wrote:
> On Wed, Sep 02, 2020 at 03:35:54AM +0200, fro@disciples.com wrote:
> > https://twitter.com/m00nbsd/status/1291257985734410244
> >
> > I don't want to bump that old thread or start any arguments about this. I'm just curious if this tweet is accurate or have these issues been addressed? Were any of Maxime's suggestions implemented?
> >
>
> I am not sure if anyone picked up the remaining issues after I left active
> vmm development. At that time, I sent out my WIP diff for the TLB flush issue
> Maxime reported; it was not 100% complete. I am not sure if anyone is working
> on that or not, or any other issues he reported.
>
> -ml

As far as I'm aware all the pvclock(4) issues were addressed by pd@ and
mortimer@.

https://marc.info/?l=openbsd-cvs&m=158180761313544&w=2
https://marc.info/?l=openbsd-cvs&m=158269876318391&w=2

The "assorted bugs and vulns" like the RDMSR passthrough and the XSETBV
CPL check issues were handled by pd@, me and kettenis@ and they have all
been committed.

https://marc.info/?l=openbsd-cvs&m=158196338821895&w=2

The direct map issue on Intel CPUs hinted at by Maxime was also fixed
by kettenis@, deraadt@ and millert@.

https://marc.info/?l=openbsd-cvs&m=158269724517998&w=2

-Bryan.

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