Re: [PATCH RFC 02/15] vhost-user: Add memory-isolation qdev property to vhost-user devices

On Tue, Aug 4, 2026 at 3:46 AM Hanna Czenczek <[email protected]> wrote:
>
> On 03.08.26 22:32, Connor Kite wrote:
> > On Mon, Aug 3, 2026 at 5:21 AM Hanna Czenczek <[email protected]> wrote:
> >> Should `vhost_user_vga_inst_initfn()` set up an alias for
> >> "memory-isolation", like it does for "chardev" now?
> >>
> > I am not 100% sure but I can test to see.  If an alias is needed, I suspect
> > that would also apply to vhost-user-gpu-pci, right?
>
> Right, that makes sense. (If your testing confirms that it’s needed.)
>
> Hanna
>

Testing with both vhost-user-gpu-pcu and vhost-user-vga, the
memory_isolation property is getting
properly set in vhost_user without adding an alias.  In both cases,
dev->vdev refers to
a VhostUserGpu, which has the memory_isolation qdev property set as in
other vhost-user front-ends.

Unlike most vhost-user front-ends, vhost-user-gpu does not define a
"chardev" qdev property.  Maybe that
is why the "chardev" property needs to be aliased?  However, I don't
understand why "chardev" is not a qdev
property as vhost-user-gpu already makes use of many of them.

Best,
Connor