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t=1789762805; bh=Cyl7vQEW3LfLjMkgXBXkK29B6dIUdPn+EyE/qOnRRR0=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=mjUAFoYZxPnQsQpOb1L4wDNqgVs+S5TR7L4F5G2tKrnkscbfk4QcfcKxREph+VKZo HU3vZ2CgZGzNL0KHEe0HjGVd/CzNrQI8pyVAy0FTcj2mqPOkLNYCPtrf3ckcj7DhE8 +tqrhYnJcft2QiuKOnJYw3zmVc4Hfu4Bv8z2uZRXufolpGJHLAOMy7wLeOoCyIaywN 0YFL2w4urvGcCgv50l6U6RJbbLEgs44TDrHqe2wuj+SIUebumCXE7QON4KoF2V65y2 ogVEOzaDp5uXgGhOWTsvegM1Tsg/bEtnr51NmkSqpNGRH+UMEc75JUA3+0XnXd3u8h VBiGcEdnQ9wiQ== From: sashiko-bot@kernel.org Subject: Re: [PATCH v9 03/13] PCI: liveupdate: Track incoming preserved PCI devices Reply-To: sashiko-reviews@lists.linux.dev To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, "David Matlack" Cc: "Mike Rapoport" , "Leon Romanovsky" , "Pratyush Yadav" , "Jonathan Corbet" , "Saeed Mahameed" , "William Tu" , "Yi Liu" , "Bjorn Helgaas" , "Josh Hilke" , "Pranjal Shrivastava" , "Jacob Pan" , "Alex Williamson" , "Randy Dunlap" , "Adithya Jayachandran" , "Chris Li" , "Samiullah Khawaja" , linux-pci@vger.kernel.org, "Alexander Graf" , "David Rientjes" , "Parav Pandit" , kexec@lists.infradead.org, "Lukas Wunner" , "Pasha Tatashin" , "Shuah Khan" , "Vipin Sharma" , "Jason Gunthorpe" In-Reply-To: <20260918200640.887030-4-dmatlack@google.com> References: <20260918200640.887030-1-dmatlack@google.com> <20260918200640.887030-4-dmatlack@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 18 Sep 2026 20:20:03 +0000 Message-Id: <20260918202003.E7AE51F000FF@smtp.kernel.org> X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 24D7118000A X-Stat-Signature: kd6fzef8at4uzbfei9hgarrcjuawtgcb X-Rspam-User: X-HE-Tag: 1789762805-795981 X-HE-Meta: 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 FTUB/JVo 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > During PCI enumeration, the previous kernel might have passed state about > devices that were preserved across kexec. The PCI core needs to fetch > this state to identify which devices are "incoming" and require special > handling. >=20 > Add pci_liveupdate_setup_device() which is called during device setup > to fetch the serialized state (struct pci_ser) from the Live Update > Orchestrator. The first time this happens, pci_flb_retrieve() will run > and convert the array of pci_dev_ser structs into an xarray so that it > can be looked up efficiently. >=20 > If a device is found in the xarray, the PCI core stores a pointer to its > state in dev->liveupdate_incoming until pci_liveupdate_finish() is > called by the driver. This pointer allows the PCI core and drivers to > apply Live Update-specific logic to incoming devices in subsequent > [ ... ] > as the xarray key. >=20 > Reviewed-by: Pranjal Shrivastava > Reviewed-by: Samiullah Khawaja > Signed-off-by: David Matlack Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260918200640.8870= 30-1-dmatlack@google.com?part=3D3