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.
