Re: [PATCH v2 1/2] tracing: ring-buffer: Have the ring buffer code do the vmap of physical memory

[Linus Torvalds]

On Mon, 31 Mar 2025 at 18:35, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> Just so I'm clear. Are you suggesting to add flush_dcache_range() to
> cacheflush.h and using that?

No, let's wait for it to be actually considered a problem.

And I think Jann is right that for kernel ranges you should use
flush_kernel_vmap_range() anyway.

Oh how I hate incoherent data caches.

           Linus