Re: [PATCH v7 11/12] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec
From: Pasha Tatashin
Date: Fri Jul 17 2026 - 19:32:29 EST
On Fri, 10 Jul 2026 21:26:14 +0000, David Matlack <dmatlack@xxxxxxxxxx> wrote:
> Do not disable bus mastering on outgoing preserved devices during
> pci_device_shutdown() for kexec.
>
> Preserved devices must be allowed to perform memory transactions during
> a Live Update to ensure continuous operation. Clearing the bus
> mastering bit would prevent these devices from issuing any memory
> requests while the new kernel boots.
>
> [...]
Reviewed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
--
Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>