Re: [PATCH v4 11/11] gdb, gdbserver: add AlwaysNonStop remote protocol extension

> From: Mohamed Bouhaouel <[email protected]>
> Cc: [email protected],
> 	[email protected],
> 	[email protected],
> 	[email protected],
> 	[email protected]
> Date: Tue, 14 Jul 2026 11:21:28 +0200
> 
> From: "Bouhaouel, Mohamed" <[email protected]>
> 
> Add a new RSP extension allowing remote stubs to declare that a target
> prefers to operate in non-stop mode.
> 
> When a stub advertises "AlwaysNonStop+" in its qSupported response:
> 
> * The stub automatically initializes to non-stop mode.
> * GDB will operate the stub in non-stop mode (with default settings).
> * The stub may reject QNonStop:0 requests with descriptive error
>   messages.
> * GDB allows connection even if 'maint set target-non-stop off' is set,
>   but lets the stub decide whether to accept mode switches.
> 
> Additionally, gdbserver now accepts --enable-packet=PACKET to enable
> specific remote protocol packets or extensions at startup.  Currently
> this supports the 'AlwaysNonStop' extension.
> 
> Reviewed-By: Eli Zaretskii <[email protected]>
> ---
>  gdb/NEWS                                      | 13 +++
>  gdb/doc/gdb.texinfo                           | 46 ++++++++++-
>  gdb/remote.c                                  | 21 +++++
>  .../gdb.server/enable-always-non-stop.exp     | 56 +++++++++++++
>  gdbserver/server.cc                           | 79 +++++++++++++++++--
>  gdbserver/server.h                            |  2 +
>  gdbserver/target.cc                           |  6 ++
>  gdbserver/target.h                            |  6 ++
>  8 files changed, 223 insertions(+), 6 deletions(-)
>  create mode 100644 gdb/testsuite/gdb.server/enable-always-non-stop.exp

Thanks, the documentation parts are okay.

Reviewed-By: Eli Zaretskii <[email protected]>