Re: [PATCH v7 11/12] PCI: liveupdate: Do not disable bus mastering on preserved devices during kexec
Pasha Tatashin <[email protected]> Fri, 17 Jul 2026 23:32:15 +0000
| Newsgroups | org.infradead.lists.kexec,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci,org.kvack.linux-mm |
|---|---|
| Message-ID | <178433113516.189683.9930130364443329744.b4-review@b4> |
On Fri, 10 Jul 2026 21:26:14 +0000, David Matlack <[email protected]> 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 <[email protected]> -- Pasha Tatashin <[email protected]>