Re: [PATCH v2 12/14] platform/x86/intel/ifs: Add current_batch sysfs entry

Thiago Macieira
2022-11-13T21:41:05Z

On Sunday, 13 November 2022 07:58:52 PST Borislav Petkov wrote:
> * simply try *all* files in a directory

By the way, we don't want that.

It's possible that different steppings of the same generation will have the
same test scan files, with the extended signature informing that they are valid
for this stepping too (see find_matching_signature())), because these files are
going to be pretty big, in the order of a hundred MB each. That means we will
either see symlinked or hardlinked files in the directory.

If you blindly try them all, you're going to spend twice or three times as
long as necessary to complete the scan. With the timeout in question for at
least Sapphire Rapids, we're talking about a difference measured in hours.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Cloud Software Architect - Intel DCAI Cloud Engineering