On Thu, Aug 29, 2013 at 03:55:20PM -0700, Aaron Fabbri wrote:
> Has anyone considered a paravirt approach? That is:
>
> Guest kernel: Write a new IOMMU API back end which does KVM hypercalls.
> Exposes VFIO to guest user processes (nested VMs) as usual.
>
> Host kernel: KVM does things like c
Has anyone considered a paravirt approach? That is:
Guest kernel: Write a new IOMMU API back end which does KVM hypercalls.
Exposes VFIO to guest user processes (nested VMs) as usual.
Host kernel: KVM does things like collapse {guest_va -> guest_pa ->
host_pa} mappings to {guest_va -> host_pa}
Jan Kiszka writes:
> On 2013-08-28 20:12, Lluís Vilanova wrote:
>> Jan Kiszka writes:
>> [...]
Is it possible to give a nested guest direct access to a device on the
guest?
(more specifically, an AHCI controller).
>>
>>> Nope, we are lacking support for emulating or (securely) for
On 2013-08-28 20:12, Lluís Vilanova wrote:
> Jan Kiszka writes:
> [...]
>>> Is it possible to give a nested guest direct access to a device on the
>>> guest?
>>> (more specifically, an AHCI controller).
>
>> Nope, we are lacking support for emulating or (securely) forwarding
>> VT-d/IOMMU feature
Jan Kiszka writes:
[...]
>> Is it possible to give a nested guest direct access to a device on the guest?
>> (more specifically, an AHCI controller).
> Nope, we are lacking support for emulating or (securely) forwarding
> VT-d/IOMMU features to the first level guest. Would be cool to have,
> just
On 2013-08-28 16:28, Lluís Vilanova wrote:
> Hi,
>
> I want to get the following setup, but don't know how (or if it's even
> possible):
>
> * A guest VM with two AHCI controllers, with one device each. One of the AHCI
> controllers provides the VM's disk ("system"), while the other provides
>
Hi,
I want to get the following setup, but don't know how (or if it's even
possible):
* A guest VM with two AHCI controllers, with one device each. One of the AHCI
controllers provides the VM's disk ("system"), while the other provides
another disk ("nested") and uses a different emulation dr
