From: Bjorn Helgaas <helgaas@kernel.org>
To: David Matlack <dmatlack@google.com>
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 <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>, Joerg Roedel <joro@8bytes.org>,
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>,
Robin Murphy <robin.murphy@arm.com>,
Saeed Mahameed <saeedm@nvidia.com>,
Samiullah Khawaja <skhawaja@google.com>,
Shuah Khan <skhan@linuxfoundation.org>,
Will Deacon <will@kernel.org>, William Tu <witu@nvidia.com>,
Yi Liu <yi.l.liu@intel.com>
Subject: Re: [PATCH v4 10/11] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec
Date: Mon, 27 Apr 2026 16:08:01 -0500 [thread overview]
Message-ID: <20260427210801.GA185338@bhelgaas> (raw)
In-Reply-To: <20260423212316.3431746-11-dmatlack@google.com>
On Thu, Apr 23, 2026 at 09:23:14PM +0000, David Matlack wrote:
> Do not disable bus mastering on outgoing preserved devices during
> pci_device_shutdown() for kexec.
> +++ b/drivers/pci/liveupdate.c
> @@ -132,6 +132,10 @@
> * * The PCI core inherits ARI Forwarding Enable on all bridges with downstream
> * preserved devices to ensure that all preserved devices on the bridge's
> * secondary bus are addressable after the Live Update.
> + *
> + * * The PCI core does not disable bus mastering on outoing preserved devices
> + * during kexec. This allows preserved devices to issue memory transactions
s/outoing/outgoing/
next prev parent reply other threads:[~2026-04-27 21:08 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-23 21:23 [PATCH v4 00/11] PCI: liveupdate: PCI core support for Live Update David Matlack
2026-04-23 21:23 ` [PATCH v4 01/11] PCI: liveupdate: Set up FLB handler for the PCI core David Matlack
2026-04-24 12:33 ` Pratyush Yadav
2026-04-24 13:29 ` Pasha Tatashin
2026-04-27 23:59 ` David Matlack
2026-04-28 17:50 ` Pasha Tatashin
2026-04-28 23:47 ` David Matlack
2026-04-30 21:06 ` Bjorn Helgaas
2026-05-01 16:57 ` David Matlack
2026-04-27 21:05 ` Bjorn Helgaas
2026-04-27 21:31 ` David Matlack
2026-04-28 19:45 ` Vipin Sharma
2026-04-28 23:51 ` David Matlack
2026-04-30 18:48 ` Vipin Sharma
2026-04-30 20:44 ` David Matlack
2026-04-23 21:23 ` [PATCH v4 02/11] PCI: liveupdate: Track outgoing preserved PCI devices David Matlack
2026-04-27 15:57 ` Jacob Pan
2026-04-27 18:56 ` David Matlack
2026-04-27 21:06 ` Bjorn Helgaas
2026-04-28 17:24 ` Samiullah Khawaja
2026-04-28 17:35 ` Samiullah Khawaja
2026-04-30 21:16 ` David Matlack
2026-04-30 21:15 ` David Matlack
2026-05-01 18:17 ` Samiullah Khawaja
2026-05-01 18:25 ` David Matlack
2026-04-28 20:20 ` Vipin Sharma
2026-04-28 21:12 ` David Matlack
2026-04-30 18:25 ` Vipin Sharma
2026-04-30 20:36 ` David Matlack
2026-04-30 20:42 ` Vipin Sharma
2026-04-30 21:22 ` David Matlack
2026-04-23 21:23 ` [PATCH v4 03/11] PCI: liveupdate: Track incoming " David Matlack
2026-04-27 21:06 ` Bjorn Helgaas
2026-04-23 21:23 ` [PATCH v4 04/11] PCI: liveupdate: Document driver binding responsibilities David Matlack
2026-04-23 21:23 ` [PATCH v4 05/11] PCI: liveupdate: Inherit bus numbers during Live Update David Matlack
2026-04-27 18:47 ` Jacob Pan
2026-04-27 20:40 ` David Matlack
2026-04-27 21:16 ` David Matlack
2026-04-29 22:28 ` Jacob Pan
2026-04-29 22:56 ` David Matlack
2026-04-27 21:07 ` Bjorn Helgaas
2026-04-23 21:23 ` [PATCH v4 06/11] PCI: liveupdate: Auto-preserve upstream bridges across " David Matlack
2026-04-23 21:23 ` [PATCH v4 07/11] PCI: liveupdate: Inherit ACS flags in incoming preserved devices David Matlack
2026-05-04 17:23 ` David Matlack
2026-04-23 21:23 ` [PATCH v4 08/11] PCI: liveupdate: Require preserved devices are in immutable singleton IOMMU groups David Matlack
2026-04-23 22:10 ` David Matlack
2026-04-23 22:52 ` Jason Gunthorpe
2026-04-23 23:09 ` David Matlack
2026-04-23 23:27 ` Samiullah Khawaja
2026-04-30 20:46 ` David Matlack
2026-04-27 20:56 ` Jacob Pan
2026-04-30 20:49 ` David Matlack
2026-04-23 21:23 ` [PATCH v4 09/11] PCI: liveupdate: Inherit ARI Forwarding Enable on preserved bridges David Matlack
2026-04-23 21:23 ` [PATCH v4 10/11] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec David Matlack
2026-04-27 21:08 ` Bjorn Helgaas [this message]
2026-04-23 21:23 ` [PATCH v4 11/11] Documentation: PCI: Add documentation for Live Update David Matlack
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260427210801.GA185338@bhelgaas \
--to=helgaas@kernel.org \
--cc=ajayachandra@nvidia.com \
--cc=alex@shazbot.org \
--cc=bhelgaas@google.com \
--cc=chrisl@kernel.org \
--cc=corbet@lwn.net \
--cc=dmatlack@google.com \
--cc=graf@amazon.com \
--cc=iommu@lists.linux.dev \
--cc=jacob.pan@linux.microsoft.com \
--cc=jgg@nvidia.com \
--cc=joro@8bytes.org \
--cc=jrhilke@google.com \
--cc=kexec@lists.infradead.org \
--cc=leonro@nvidia.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-pci@vger.kernel.org \
--cc=lukas@wunner.de \
--cc=parav@nvidia.com \
--cc=pasha.tatashin@soleen.com \
--cc=praan@google.com \
--cc=pratyush@kernel.org \
--cc=rientjes@google.com \
--cc=robin.murphy@arm.com \
--cc=rppt@kernel.org \
--cc=saeedm@nvidia.com \
--cc=skhan@linuxfoundation.org \
--cc=skhawaja@google.com \
--cc=will@kernel.org \
--cc=witu@nvidia.com \
--cc=yi.l.liu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.