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

2018-11-19 Thread Alex G.
On 11/19/2018 12:24 PM, Sinan Kaya wrote: On 11/19/2018 1:10 PM, Keith Busch wrote: We can't really turn off firmware first in the kernel without asking help from the firmware. The _OSC method this patch utilizes is the ACPI spec defined way for the kernel to wrest control from firmware. BIOS

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

2018-11-20 Thread Alex G.
On 11/20/2018 04:28 PM, Sinan Kaya wrote: On 11/20/2018 4:42 PM, Keith Busch wrote: How does that work? If the OS takes control, it sets up MSIs that FW don't react to, and disables system errors through PCIe Root Control. Aren't those sys errs the mechanism FW knows it has something to do,