[PATCH] irqchip/riscv-imsic: sync-up state before CPU offline

[Thomas Gleixner]

On Tue, May 05 2026 at 21:44, Thomas Gleixner wrote:
> On Sun, May 03 2026 at 23:05, Yong-Xuan Wang wrote:
>> The "move_prev" pointer in struct imsic_vector on the new CPU is
>> cleared only after the old CPU has cleared "move_next". But when
>> migrating all the interrupts out from an offling CPU, since the CPU
>> is already marked as "offlined", the IMSIC driver skip to sync-up the
>> interrupt vector in __imsic_remote_sync(). The "move_pre" pointer of
>> these interrupts can only be cleared after the old CPU backs to online.
>> Therefore the affinity of an interrupt that are orignally target an
>> offlined CPU can't be changed.
>
> https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#changelog
>
>> This patch force to clear the "move_pre" pointers before the CPU goes
>> offline.
>
> # git grep 'This patch' Documentation/process/

This change log also lacks a 'Fixes:' tag