Re: [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER
From: Sinan Kaya
Date: Thu Nov 15 2018 - 20:49:32 EST
On 11/15/2018 3:16 PM, Alexandru Gagniuc wrote:
I've asked around a few people at Dell and they unanimously agree that
_OSC is the correct way to determine ownership of AER. In linux, we
use the result of _OSC to enable AER services, but we use HEST to
determine AER ownership. That's inconsistent. This series drops the
use of HEST in favor of _OSC.
[1]https://lkml.org/lkml/2018/11/15/62
This change breaks the existing systems that rely on the HEST table
telling the operating system about firmware first presence.
Besides, HEST table has much more granularity about which PCI component
needs firmware such as global/device/switch.
You should probably circulate these ideas for wider consumption in UEFI
forum as UEFI owns the HEST table definition.