Re: [PATCH v5 0/4] Align atomic storage

[Andrew Morton]

On Tue, 16 Dec 2025 17:31:05 +1100 Finn Thain <fthain@xxxxxxxxxxxxxx> wrote:

> This series adds the __aligned attribute to atomic_t and atomic64_t
> definitions in include/linux and include/asm-generic (respectively)
> to get natural alignment of both types on csky, m68k, microblaze,
> nios2, openrisc and sh.
> 
> This series also adds Kconfig options to enable a new run-time warning
> to help reveal misaligned atomic accesses on platforms which don't
> trap that.
> 
> The performance impact is expected to vary across platforms and workloads.
> The measurements I made on m68k show that some workloads run faster and
> others slower.

Looks nice, thanks.

I don't know which tree this is aimed at.  I grabbed a copy for
mm.git's mm-nonmm-unstable tree, can drop it again if this pops up in
linux-next via another route.