On Thu, Nov 15, 2018 at 8:49 PM Sinan Kaya <okaya@xxxxxxxxxx> wrote: > > 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. I agree with Sinan, this will break existing systems, and the granularity of the HEST definition is more useful than the single bit in _OSC.
