RE: [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Alexandru Gagniuc
> Sent: 15 November 2018 23:16
...
> I've asked around a few people at Dell and they unanimously agree that
> _OSC is the correct way to determine ownership of AER.

This is all very well, but we have systems (they might be Dell ones)
where failure of a PCIe link (even when all the drivers are removed)
causes an NMI - and crashes the kernel.

There are other systems which have AER registers available for
some of the PCIe devices, but the BIOS ignores them and _OSC
doesn't let the kernel take control.
In this case the AER registers can contain useful information
after a read returns ~0u.
It would be useful to be able to get this information without
having to grovel through all the PCIe config space.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)




[Index of Archives]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux