Re: [PATCH v11 04/11] tracing: wprobe: Add watchpoint probe event based on hardware breakpoint

[Peter Zijlstra]

On Sun, Aug 02, 2026 at 05:19:10PM +0900, Masami Hiramatsu (Google) wrote:
> From: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
> 
> Add a new probe event for the hardware breakpoint called wprobe-event.
> This wprobe allows user to trace (watch) the memory access at the
> specified memory address.

s/the memory/the kernel memory/

> The new syntax is;
> 
>  w[:[GROUP/]EVENT] [r|w|rw]@[ADDR|SYM][:SIZE] [FETCH_ARGs]
> 
> User also can use $addr to fetch the accessed address and $value to fetch
> the accessed memory value (shorthand for '+0($addr)'). No other variables
> are supported.

This seems limited to kernel addresses only? Should not also userspace
addresses be supported?