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From: Bjorn Helgaas <helgaas@kernel.org>
To: David Matlack <dmatlack@google.com>
Cc: 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 <ajayachandra@nvidia.com>,
	Alexander Graf <graf@amazon.com>,
	Alex Williamson <alex@shazbot.org>,
	Bjorn Helgaas <bhelgaas@google.com>, Chris Li <chrisl@kernel.org>,
	David Rientjes <rientjes@google.com>,
	Jacob Pan <jacob.pan@linux.microsoft.com>,
	Jason Gunthorpe <jgg@nvidia.com>,
	Jonathan Corbet <corbet@lwn.net>, Josh Hilke <jrhilke@google.com>,
	Leon Romanovsky <leonro@nvidia.com>,
	Lukas Wunner <lukas@wunner.de>, Mike Rapoport <rppt@kernel.org>,
	Parav Pandit <parav@nvidia.com>,
	Pasha Tatashin <pasha.tatashin@soleen.com>,
	Pranjal Shrivastava <praan@google.com>,
	Pratyush Yadav <pratyush@kernel.org>,
	Saeed Mahameed <saeedm@nvidia.com>,
	Samiullah Khawaja <skhawaja@google.com>,
	Shuah Khan <skhan@linuxfoundation.org>,
	Vipin Sharma <vipinsh@google.com>, William Tu <witu@nvidia.com>,
	Yi Liu <yi.l.liu@intel.com>
Subject: Re: [PATCH v7 02/12] PCI: liveupdate: Track outgoing preserved PCI devices
Date: Thu, 23 Jul 2026 17:29:47 -0500	[thread overview]
Message-ID: <20260723222947.GA868047@bhelgaas> (raw)
In-Reply-To: <20260710212616.1351130-3-dmatlack@google.com>

On Fri, Jul 10, 2026 at 09:26:05PM +0000, David Matlack wrote:
> Add APIs to allow drivers to notify the PCI core of which devices are
> being preserved across a Live Update for the next kernel, i.e.
> "outgoing" devices.
> 
> Drivers must notify the PCI core when devices are preserved so that the
> PCI core can update its FLB data (struct pci_ser) and track the list of
> outgoing devices. pci_liveupdate_preserve() notifies the PCI core that a
> device must be preserved across Live Update. pci_liveupdate_unpreserve()
> reverses this (cancels the preservation of the device).
> 
> This tracking ensures the PCI core is fully aware of which devices may
> need special handling during shutdown and kexec, and so that it can be
> handed off to the next kernel.

I guess the antecedent of "it" is a device?  Maybe s/it/they/?

Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> 

> +static void pci_liveupdate_unpreserve_device(struct pci_flb_outgoing *outgoing, struct pci_dev *dev)

Wrap parameter list to fit in 80 columns.


  parent reply	other threads:[~2026-07-23 22:29 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-10 21:26 [PATCH v7 00/12] PCI: liveupdate: PCI core support for Live Update David Matlack
2026-07-10 21:26 ` [PATCH v7 01/12] PCI: liveupdate: Set up FLB handler for the PCI core David Matlack
2026-07-17 19:28   ` Pasha Tatashin
2026-07-17 19:30     ` Jason Gunthorpe
2026-07-17 19:40       ` Pasha Tatashin
2026-07-17 19:42     ` Pasha Tatashin
2026-07-23 22:21   ` Bjorn Helgaas
2026-07-10 21:26 ` [PATCH v7 02/12] PCI: liveupdate: Track outgoing preserved PCI devices David Matlack
2026-07-17 19:38   ` Pasha Tatashin
2026-07-23 22:29   ` Bjorn Helgaas [this message]
2026-07-10 21:26 ` [PATCH v7 03/12] PCI: liveupdate: Track incoming " David Matlack
2026-07-17 21:46   ` Pasha Tatashin
2026-07-20 21:54     ` David Matlack
2026-07-20 22:44       ` Pasha Tatashin
2026-07-20 23:07         ` David Matlack
2026-07-21 17:55           ` Pasha Tatashin
2026-07-21 20:25             ` David Matlack
2026-07-21 21:35               ` Pasha Tatashin
2026-07-21 23:02       ` Samiullah Khawaja
2026-07-21 23:16         ` David Matlack
2026-07-21 23:18           ` David Matlack
2026-07-21 23:46             ` Pasha Tatashin
2026-07-22 17:00               ` David Matlack
2026-07-17 22:38   ` Alex Williamson
2026-07-20 22:00     ` David Matlack
2026-07-22 16:10       ` David Matlack
2026-07-10 21:26 ` [PATCH v7 04/12] PCI: liveupdate: Document driver binding responsibilities David Matlack
2026-07-10 21:26 ` [PATCH v7 05/12] PCI: liveupdate: Keep bus numbers constant during Live Update David Matlack
2026-07-17 21:48   ` Pasha Tatashin
2026-07-23 23:01   ` Bjorn Helgaas
2026-07-10 21:26 ` [PATCH v7 06/12] PCI: liveupdate: Auto-preserve upstream bridges across " David Matlack
2026-07-17 22:00   ` Pasha Tatashin
2026-07-10 21:26 ` [PATCH v7 07/12] PCI: Refactor matching logic for pci_dev_acs_ops David Matlack
2026-07-17 22:02   ` Pasha Tatashin
2026-07-10 21:26 ` [PATCH v7 08/12] PCI: liveupdate: Inherit ACS flags in incoming preserved devices David Matlack
2026-07-17 22:08   ` Pasha Tatashin
2026-07-10 21:26 ` [PATCH v7 09/12] PCI: liveupdate: Inherit ARI Forwarding Enable on preserved bridges David Matlack
2026-07-17 23:29   ` Pasha Tatashin
2026-07-20 23:19     ` David Matlack
2026-07-21 18:17       ` Pasha Tatashin
2026-07-21 20:26         ` David Matlack
2026-07-10 21:26 ` [PATCH v7 10/12] PCI: liveupdate: Freeze preservation status during shutdown David Matlack
2026-07-17 23:30   ` Pasha Tatashin
2026-07-10 21:26 ` [PATCH v7 11/12] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec David Matlack
2026-07-17 23:32   ` Pasha Tatashin
2026-07-10 21:26 ` [PATCH v7 12/12] Documentation: PCI: Add documentation for Live Update David Matlack
2026-07-17 23:38   ` Pasha Tatashin

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