On Wed, 4 Mar 2020 18:40:46 +0100 Joerg Roedel <joro@xxxxxxxxxx> wrote: > On Wed, Mar 04, 2020 at 04:38:21PM +0100, Jean-Philippe Brucker wrote: > > I agree with this. The problem is I don't know how to get a new > > ACPI table or change an existing one. It needs to go through the > > UEFI forum in order to be accepted, and I don't have any weight > > there. I've been trying to get the tiny change into IORT for ages. > > I haven't been given any convincing reason against it or offered > > any alternative, it's just stalled. The topology description > > introduced here wasn't my first choice either but unless someone > > can help finding another way into ACPI, I don't have a better > > idea. > > A quote from the ACPI Specification (Version 6.3, Section 5.2.6, > Page 119): > > Table signatures will be reserved by the ACPI promoters and > posted independently of this specification in ACPI errata and > clarification documents on the ACPI web site. Requests to > reserve a 4-byte alphanumeric table signature should be sent > to the email address info@xxxxxxxxx and should include the purpose > of the table and reference URL to a document that describes > the table format. Tables defined outside of the ACPI specification > may define data value encodings in either little endian or big > endian format. For the purpose of clarity, external table > definition documents should include the endian-ness of their > data value encodings. > > So it sounds like you need to specifiy the table format and send a > request to info@xxxxxxxxx to get a table signature for it. > + Mike and Erik who work closely on UEFI and ACPICA. Copy paste Erik's initial response below on how to get a new table, seems to confirm with the process you stated above. "Fairly easy. You reserve a 4-letter symbol by sending a message requesting to reserve the signature to Mike or the ASWG mailing list or info@xxxxxxxxx There is also another option. You can have ASWG own this new table so that not one entity or company owns the new table." > Regards, > > Joerg
