Re: [PATCH v2 2/7] firmware: coreboot: Generate aliases for coreboot modules

Brian Norris
2024-01-31T00:02:14Z

On Tue, Jan 30, 2024 at 3:51 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
> On Tue, Jan 23, 2024 at 02:06:14PM -0800, Brian Norris wrote:
> > "Don't you want to have a driver data or so associated with this?"
...
> But why limit yourself to 32bits now? Why not make it 64? It is going
> to be sent to userspace, so you have to be very careful about it.

Is that question related to the question I pasted/replied to, about
driver data? Or a new topic? Sorry if I'm misunderstanding.

Anyway, for the size of the tag field: I don't have a strong opinion.
But FWIW, they're coming from this project:

https://review.coreboot.org/plugins/gitiles/coreboot/+/269b23280f928510bcadd23182294e5b9dad11ec/payloads/libpayload/include/coreboot_tables.h#36

As you can see there, we're extremely far from exhausting 16 bits, let alone 32.

Brian