Re: [RFC PATCH 0/5] hw/arm/virt: Add support for user-creatable nested SMMUv3

[Nicolin Chen]

Hi Don,

On Fri, Jan 10, 2025 at 11:05:24PM -0500, Donald Dutile wrote:
> On 1/8/25 11:45 PM, Nicolin Chen wrote:
> > On Mon, Dec 16, 2024 at 10:01:29AM +0000, Shameerali Kolothum Thodi wrote:
> > > And patches prior to this commit adds that support:
> > > 4ccdbe3: ("cover-letter: Add HW accelerated nesting support for arm
> > > SMMUv3")
> > > 
> > > Nicolin is soon going to send out those for review. Or I can include
> > > those in this series so that it gives a complete picture. Nicolin?
> > 
> > Just found that I forgot to reply this one...sorry
> > 
> > I asked Don/Eric to take over that vSMMU series:
> > https://lore.kernel.org/qemu-devel/Zy0jiPItu8A3wNTL@Asurada-Nvidia/
> > (The majority of my effort has been still on the kernel side:
> >   previously vIOMMU/vDEVICE, and now vEVENTQ/MSI/vCMDQ..)
> > 
> > Don/Eric, is there any update from your side?
> > 
> Apologies for delayed response, been at customer site, and haven't been 
> keeping up w/biz email.
> Eric is probably waiting for me to get back and chat as well.
> Will look to reply early next week.
 
I wonder if we can make some progress in Feb? If so, we can start
to wrap up the iommufd uAPI patches for HWPT, which was a part of
intel's series but never got sent since their emulated series is
seemingly still pending?

One detail for the uAPI patches is to decide how vIOMMU code will
interact with those backend APIs.. Hopefully, you and Eric should
have something in mind :)

Thanks
Nicolin