[Rust-VMM] [Rust-vmm] Goals for this list

Dylan Reid dgreid at google.com
Thu Dec 20 19:55:49 UTC 2018

On Thu, Dec 20, 2018, 7:34 AM Paolo Bonzini <pbonzini at redhat.com wrote:

> On 20/12/18 16:05, Anthony Liguori wrote:
> > The two biggest sources of CVEs in KVM have been instruction emulation
> > and device emulation.  Moving the x86_emulate code to userspace and
> > rewritting it in Rust would eliminate one of the larger attack surfaces
> > in KVM and likewise, moving IO APIC and PIT emulation to userspace would
> > help a lot there too.
> >
> > On modern processors, LAPIC is handled almost entirely in hardware so
> > the remaining complexity in KVM is really around EPT handling and
> > hardware interaction.  I don't think either can reasonably be moved.
> Note that userspace PIT/PIC/IOAPIC emulation is already supported by KVM
> (Linux 4.4 or newer I think; QEMU will make it the default for the q35
> machine type in the next release, for now you need -machine
> kernel_irqchip=split).

+ Miriam who is working on pit and apic on crosvm

> Paolo
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