Re: [PATCH 6.1 0/3] net: Backlog NAPI threading for PREEMPT_RT

From: Greg Kroah-Hartman

Date: Tue Feb 03 2026 - 10:52:29 EST


On Mon, Jan 19, 2026 at 12:40:30AM +0800, wen.yang@xxxxxxxxx wrote:
> From: Wen Yang <wen.yang@xxxxxxxxx>
>
> Backport three upstream commits to fix a warning on PREEMPT_RT kernels
> where raising SOFTIRQ from smp_call_functio triggers WARN_ON_ONCE()
> in do_softirq_post_smp_call_flush().

But PREEMPT_RT showed up for real in 6.12.y, NOT 6.1.y. We are reverting
PREEMPT_RT-only patches from the latest 6.6.y tree at the moment, why
are these needed here for 6.1.y at all?

confused,

greg k-h