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b=f2Yasvoienx7V+cC4PCEeVthUNsSP6+lU5/iKedPkKipBTK3W9hQlKQOizBDpjzWt tmNepResRGa9Robr+yPwMgrRAe7aQXzQ2jhIQgRJwvJEOo5f7UtB42dPaDXfDIIcUX afIekttok4tFW/iR+rCngQveUvcIZiUoA3WIpOc8oBp48Bn3VRBy58KHuIkjYwkEFc ftQaqsh5nTtMk8ievxIuK556Wzq+jWivXo+c6aFEfpXiH+ww+Ds4y1wq8ksZKb1Iiu FW8X5Rtq0CoA/Jo+Rum76rkryfic5YtzKPIShtN7H0Nv1vappKhtvXjZXcsJO2PIOL MZ+Bgj4uYDiiQ== Date: Mon, 27 Apr 2026 16:05:29 -0500 From: Bjorn Helgaas To: David Matlack Cc: iommu@lists.linux.dev, kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, Adithya Jayachandran , Alexander Graf , Alex Williamson , Bjorn Helgaas , Chris Li , David Rientjes , Jacob Pan , Jason Gunthorpe , Joerg Roedel , Jonathan Corbet , Josh Hilke , Leon Romanovsky , Lukas Wunner , Mike Rapoport , Parav Pandit , Pasha Tatashin , Pranjal Shrivastava , Pratyush Yadav , Robin Murphy , Saeed Mahameed , Samiullah Khawaja , Shuah Khan , Will Deacon , William Tu , Yi Liu Subject: Re: [PATCH v4 01/11] PCI: liveupdate: Set up FLB handler for the PCI core Message-ID: <20260427210529.GA186381@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260423212316.3431746-2-dmatlack@google.com> X-Stat-Signature: q5834cwh6qyrfzc7saruhsmabwzu595m X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 4C351140010 X-Rspam-User: X-HE-Tag: 1777323932-427551 X-HE-Meta: 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 NfNqmOR/ ze5QJIHYRK4KwkAWTMverAr8CepOI4hLXH6C/sXqPzRlCz2ULQ4jjeCQJWItuE/TcGQ7yUS9gyF5QOOsfSTtCeoqP99zcPVfaFc/xlJR6MSlCjGucvuWYtvR+8kiLp6Pnd/LP76b3o8/I+RYEB8BjIbP+7isN9EJUM5+PyceJkgj7PYSSYU0yBr4uUohyOtQWLFg+oah/hp4Qf9rJCwFnvdcHtDSftdvNTMlMo/KH5haS9gANJzc8g0Ro2sfaLFMb7dJkIQir9k5XbAxKoGWpr2O4WCBtemyZRZFZPCUDG7AyP8N5zr44PvAqrEeLeRX/C5VMG2jQsKcQKvw5G8/Y+/1Ahw89ZBdLVPO/YovL78V8Ya4= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Apr 23, 2026 at 09:23:05PM +0000, David Matlack wrote: > Set up a File-Lifecycle-Bound (FLB) handler for the PCI core to enable > it to participate in the preservation of PCI devices across Live Update. > Essentially, this commit enables the PCI core to allocate a struct > (struct pci_ser) and preserve it across a Live Update whenever at least > one device is preserved. > > Preserving PCI devices across Live Update is built on top of the Live > Update Orchestrator's (LUO) support for file preservation. Drivers are > expected to expose a file to userspace to represent a single PCI device > and support preservation of that file. This is itended primarily to > support preservation of PCI devices bound to VFIO drivers. s/itended/intended/ > +++ b/MAINTAINERS > @@ -20555,6 +20555,18 @@ L: linux-pci@vger.kernel.org > S: Supported > F: Documentation/PCI/pci-error-recovery.rst > > +PCI LIVE UPDATE > +M: Bjorn Helgaas I don't think I want to be the primary contact here. I'll see patches regardless since they're on linux-pci. > +M: David Matlack > +L: linux-pci@vger.kernel.org > +S: Supported > +Q: https://patchwork.kernel.org/project/linux-pci/list/ > +B: https://bugzilla.kernel.org > +C: irc://irc.oftc.net/linux-pci > +T: git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git > +F: drivers/pci/liveupdate.c > +F: include/linux/kho/abi/pci.h