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Lunev" Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Kevin Wolf , Hanna Reitz , Vladimir Sementsov-Ogievskiy , Andrey Drobyshev Subject: Re: [PATCH 08/13] qemu-io: accept --object iothread Message-ID: References: <20260930165000.303236-1-den@openvz.org> <20260930165000.303236-9-den@openvz.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260930165000.303236-9-den@openvz.org> User-Agent: NeoMutt/20260616 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 10 X-Spam_score: 1.0 X-Spam_bar: + X-Spam_report: (1.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.24, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Wed, Sep 30, 2026 at 06:49:54PM +0200, Denis V. Lunev wrote: > From: Denis V. Lunev > > qemu-io refused "--object iothread,id=t0" with "invalid object type: > iothread", because iothread.c was built into blockdev_ss, which qemu-io > does not link. Move it to block_ss: it wraps an AioContext and has > nothing to do with blockdev, and linking blockdev instead would drag in > os-posix.c, whose qemu_system_killed() every program linking it has to > define. > > Collect the --object arguments during option parsing and process them > once qemu_init_main_loop() has run; nothing before that point uses an > object. An iothread created earlier registers the timer lists of its > AioContext with clocks that qemu_init_clocks() then resets, unlinking > them silently: no failure, just timers that never fire. > > Signed-off-by: Denis V. Lunev > CC: Kevin Wolf > CC: Hanna Reitz > CC: Vladimir Sementsov-Ogievskiy > CC: Andrey Drobyshev > --- > meson.build | 2 +- > qemu-io.c | 9 ++++++++- > 2 files changed, 9 insertions(+), 2 deletions(-) > Reviewed-by: Eric Blake -- Eric Blake, Principal Software Engineer Red Hat, Inc. Virtualization: qemu.org | libguestfs.org