Re: [PATCH 0/7] Enable Qualcomm WiFi PCIe passthrough to VMs

[Jason Gunthorpe]

On Sun, Oct 11, 2026 at 09:54:25AM +0200, Jose Ignacio Tornos Martinez wrote:
> Hi,
> 
> Since no further feedback was received after the last discussion,
> I proceeded with v2 addressing review findings (Sashiko):
> https://lore.kernel.org/all/20261011074514.515894-1-jtornosm@xxxxxxxxxx/
> 
> I remain open to suggestions and happy to iterate further if needed
> to get this acceptable.

IMHO this is not OK, building a new crazy hypervisor interface that
only works with the broken driver design we have today is not OK. This
is not some "quirk", it is a permanent new ABI between VMM and kernel
that has real compatibility implications.

Go tell an AI to convert it to
platform_device_msi_init_and_alloc_irqs() and then solve for that so
at least we are not getting trapped into a completely broken ABI by
all the hacks here.

The whole "MSI Caching" concept is fully wrong to be an ABI to a VM.

Jason