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

From: Alex_Gagniuc
Date: Mon Nov 19 2018 - 18:49:39 EST


On 11/19/2018 02:33 PM, Sinan Kaya wrote:
> True. I was trying to get it out in a rush. I omitted words.

Sounds like you'd make an top notch spec writer! :p

> However; table assumes governance about for which entities firmware first
> should be enabled. There is no cross reference to _OSC or permission
> negotiation like _OST.

Well, from an OSPM perspective, is FFS something that can be enabled or
disabled? FFS seems to be static to OSPM, which would change the sort of
assumptions we can reasonably make here.


>>> As I said in my previous email, the right place to talk about this is UEFI
>>> forum.
>>
>> The way I would present the problem to he spec writers is that, although
>> the spec appears to be consistent, we've seen firmware vendors that made
>> the wrong assumptions about HEST/_OSC. Instead of describing AER
>> ownership with _OSC, they attempted to do it with HEST. So we should add
>> an implementation note, or clarification about this.
>
> I agree.

Cool. While the UEFI Secret Society debates, can we figure out if/how
[patch 1/2] breaks those systems, or is it only [patch 2/2] of this
series that we suspect?

Alex