On Tue, Oct 15, 2024 at 01:09:42PM -0500, Mario Limonciello wrote: > > > > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 > > > > I tried to find the HFI details on the documents in this "bug" but I could > > not find them. What document in specific could I look at? > > > > Thanks and BR, > > Ricardo > > Hi Ricardo, > > It is spread out across multiple places. This is part of the reason for > patch 1 in the series outlines details of how it works. > > The reason for that "collect all" Bugzilla for documentation is because the > URLs for AMD documentation have undergone changes in the past and it makes > it difficult to put stable URLs in commit messages. So teams that want to > reference documentation put it on a dump all bug for a stable URL to > reference. > > On that link you will find the APM, which will have some documentation > specifically for the CPUID leafs used for topology identification and > clearing history. > > Read patch 1 and let me know if it covers what specifically you're looking > for. If it's still missing some info let me know what you would like added. Thank you for your reply! I read patch 1. I was wondering specifically about more details of the Class ID. I see that they have associated counters and desired scheduling behavior. I was also curious about the layout of the HFI table. I guess I can infer it from patches 5 and 6 but if there is a picture already, I wouldn't mind. ;)
