From: Jason Gunthorpe <jgg@nvidia.com>
To: Pranjal Shrivastava <praan@google.com>
Cc: David Matlack <dmatlack@google.com>,
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>,
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>,
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 v6 08/12] PCI: liveupdate: Inherit ACS flags in incoming preserved devices
Date: Mon, 8 Jun 2026 15:16:40 -0300 [thread overview]
Message-ID: <20260608181640.GO1962447@nvidia.com> (raw)
In-Reply-To: <aiaeOVomxQZhoM3K@google.com>
On Mon, Jun 08, 2026 at 10:49:29AM +0000, Pranjal Shrivastava wrote:
> My point was that a FW exploit can meddle with the bitfields of the
> ACS_CTRL to spoof and mis-report the ACS flags.
Devices can also ignore the ACS flags. I don't think this is an area
where we should be worrying about devices being actively hostile.
Jason
next prev parent reply other threads:[~2026-06-08 18:16 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-22 20:23 [PATCH v6 00/12] PCI: liveupdate: PCI core support for Live Update David Matlack
2026-05-22 20:23 ` [PATCH v6 01/12] PCI: liveupdate: Set up FLB handler for the PCI core David Matlack
2026-06-05 5:41 ` Pranjal Shrivastava
2026-06-08 20:51 ` David Matlack
2026-05-22 20:24 ` [PATCH v6 02/12] PCI: liveupdate: Track outgoing preserved PCI devices David Matlack
2026-06-05 6:11 ` Pranjal Shrivastava
2026-05-22 20:24 ` [PATCH v6 03/12] PCI: liveupdate: Track incoming " David Matlack
2026-06-06 10:08 ` Pranjal Shrivastava
2026-06-08 20:57 ` David Matlack
2026-05-22 20:24 ` [PATCH v6 04/12] PCI: liveupdate: Document driver binding responsibilities David Matlack
2026-05-25 15:35 ` Pratyush Yadav
2026-06-06 10:20 ` Pranjal Shrivastava
2026-05-22 20:24 ` [PATCH v6 05/12] PCI: liveupdate: Keep bus numbers constant during Live Update David Matlack
2026-06-06 11:10 ` Pranjal Shrivastava
2026-05-22 20:24 ` [PATCH v6 06/12] PCI: liveupdate: Auto-preserve upstream bridges across " David Matlack
2026-06-06 22:15 ` Pranjal Shrivastava
2026-06-08 21:34 ` David Matlack
2026-05-22 20:24 ` [PATCH v6 07/12] PCI: Refactor matching logic for pci_dev_acs_ops David Matlack
2026-06-07 19:01 ` Pranjal Shrivastava
2026-06-08 21:49 ` David Matlack
2026-05-22 20:24 ` [PATCH v6 08/12] PCI: liveupdate: Inherit ACS flags in incoming preserved devices David Matlack
2026-06-07 20:37 ` Pranjal Shrivastava
2026-06-08 10:49 ` Pranjal Shrivastava
2026-06-08 18:16 ` Jason Gunthorpe [this message]
2026-06-08 21:56 ` David Matlack
2026-05-22 20:24 ` [PATCH v6 09/12] PCI: liveupdate: Inherit ARI Forwarding Enable on preserved bridges David Matlack
2026-06-08 11:33 ` Pranjal Shrivastava
2026-06-08 18:19 ` Jason Gunthorpe
2026-05-22 20:24 ` [PATCH v6 10/12] PCI: liveupdate: Freeze preservation status during shutdown David Matlack
2026-06-08 11:47 ` Pranjal Shrivastava
2026-05-22 20:24 ` [PATCH v6 11/12] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec David Matlack
2026-06-08 11:58 ` Pranjal Shrivastava
2026-05-22 20:24 ` [PATCH v6 12/12] Documentation: PCI: Add documentation for Live Update David Matlack
2026-06-08 12:01 ` Pranjal Shrivastava
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