Messages in this thread | | | From | Ethan Zhao <> | Date | Sat, 3 Oct 2020 13:46:04 +0800 | Subject | Re: [PATCH v6 4/5] PCI: only return true when dev io state is really changed |
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Sinan,
On Sat, Oct 3, 2020 at 12:08 AM Sinan Kaya <okaya@kernel.org> wrote: > > On 9/30/2020 3:05 AM, Ethan Zhao wrote: > > When uncorrectable error happens, AER driver and DPC driver interrupt > > handlers likely call > > > > pcie_do_recovery() > > ->pci_walk_bus() > > ->report_frozen_detected() > > > > with pci_channel_io_frozen the same time. > > We need some more data on this. If DPC is supported by HW, errors > should be triggered by DPC not AER. > > If I remember right, there is a register that tells which AER errors > should be handled by DPC.
When uncorrectable errors happen, non-fatal severity level, AER and DPC could be triggered at the same time.
Thanks, Ethan
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