Re: [PATCH v4 01/11] PCI: liveupdate: Set up FLB handler for the PCI core

David Matlack
2026-05-01T16:57:57Z

On Thu, Apr 30, 2026 at 2:06 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
> On Tue, Apr 28, 2026 at 11:47:23PM +0000, David Matlack wrote:
> > On 2026-04-28 05:50 PM, Pasha Tatashin wrote:

> > > This is the way we agreed to handle kexec changes: Baoquan He is the
> > > maintainer, and without his Reviewed-by tag, we won't take changes to
> > > kexec. This is the approach we follow with MM for KHO changes to
> > > memblock and memfd preservation, as well as the upcoming
> > > hugetlb/guestmemfd preservation.
> > >
> > > This is also the approach we should continue using when adding LUO
> > > support to other components like PCI, VFIO, IOMMU, and KVM. It keeps
> > > life easier for the core component maintainers and ensures we do not
> > > regress LU by staging everything in the same tree and sending LU merge
> > > requests from a single tree.
> >
> > Ok it sounds like we are aligned on keeping drivers/pci/liveupdate.c,
> > include/linux/kho/abi/pci.h, and Documentation/PCI/liveupdate.rst in the
> > PCI LIVE UPDATE entry and not duplicating them in the LIVE UPDATE entry.
> >
> > I think the only open question is what tree to use for the PCI LIVE
> > UPDATE entry, PCI tree or Live Update tree. You are proposing the Live
> > Update tree.
> >
> > Bjorn are you ok with that approach?
>
> Yes, I think that makes sense, at least to start. In early days, it
> would probably be a headache to coordinate LU things across multiple
> trees.

Sounds good. I will swap the trees in v5. Thanks all.