Re: [PATCH v4 05/11] PCI: liveupdate: Inherit bus numbers during Live Update

David Matlack
2026-04-29T22:57:16Z

On Wed, Apr 29, 2026 at 3:28 PM Jacob Pan <jacob.pan@linux.microsoft.com> wrote:

> Below looks correct to me, but I have another question. How do you
> stablize PCI BARs? PCI BDF stability does not guarantee BARs don't get
> moved, right?

That's right, this series does not guarantee that BARs do not get
moved or sized. For P2P use-cases, we do need BARs to remain
stable and avoid sizing during enumeration. We also need to
ensure bridge windows are preserved.

My plan is to send another series to ready the PCI core for P2P
use-cases, sometime after this one.