Re: [PATCH v2 1/2] PCI/P2PDMA: Allow P2PDMA in VMware guests on Intel hosts
From: Logan Gunthorpe
Date: Mon Oct 19 2026 - 17:19:25 EST
On 2026-10-19 13:48, Popov, Pavel E wrote:
> Logan, Leon,
>
> I kept the hypervisor check to avoid changing what the host bridge
> whitelist refuses on bare metal. Looking at those cases again, on the
> listed Xeon CPUs this is a limitation of the whitelist itself, not a
> known hardware limit, and it is why Intel QAT/DSA/IAA had to be added
> by ID. So I'd drop the hypervisor check.
>
> Would a v3 that moves the Xeon list into cpu_supports_p2pdma(), the
> same way as the AMD check, be acceptable to you both?
Yes, that's essentially what I was suggesting before. That would be
acceptable to me.
Thanks,
Logan