On Fri, Feb 20 2026 at 17:09, Jisheng Zhang wrote:
> Currently, on GENERIC_IRQ_MULTI_HANDLER platforms, the handle_arch_irq
> is a pointer which is set during booting, and every irq processing needs
> to access it, so it sits in hot code path. We can use the
> runtime constant mechanism which was introduced by Linus to speed up
> its accessing.
The proper solution is to use a static call and update it in
set_handle_irq(). That removes the complete indirect call issue from
the hot path.
Thanks,
tglx
