On March 4, 2025 1:42:20 AM PST, Peter Zijlstra [off-list ref] wrote:

On Tue, Mar 04, 2025 at 03:47:45PM +0800, Menglong Dong wrote:

quoted

We don't have to select FUNCTION_ALIGNMENT_32B, so the
worst case is to increase ~2.2%.

What do you think?

Well, since I don't understand what you need this for at all, I'm firmly
on the side of not doing this.

What actual problem is being solved with this meta data nonsense? Why is
it worth blowing up our I$ footprint over.

Also note, that if you're going to be explaining this, start from
scratch, as I have absolutely 0 clues about BPF and such.

I would appreciate such information as well. The idea seems dubious on the surface.