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bh=beKLOIWCsFidtgCIESRmEqMg0agCstSgnovusb+rPJU=; b=L6oJfVIo0M8gYpNOsabWJ5ALrqyKpnnRixA6YhC2Ny4906J9I9ICkBOnJg1tKilzxJw10a DyyTYeiZQ5qzTeHoUcUZpDonYSDTxpA9T/QF8gjIOXIHC1+1zAXZfUD5ttDGWhLan6trp4 oB2IUr9NqYHsZ4WXnVa15Bt58Gxo9Kc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-219-lKKlLGksNzWZzosDwPWESQ-1; Fri, 30 Apr 2021 08:27:30 -0400 X-MC-Unique: lKKlLGksNzWZzosDwPWESQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 73863800C7A; Fri, 30 Apr 2021 12:27:29 +0000 (UTC) Received: from dresden.str.redhat.com (ovpn-114-68.ams2.redhat.com [10.36.114.68]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C792060843; Fri, 30 Apr 2021 12:27:27 +0000 (UTC) Subject: Re: [PATCH v3 08/15] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests To: Emanuele Giuseppe Esposito , qemu-block@nongnu.org References: <20210414170352.29927-1-eesposit@redhat.com> <20210414170352.29927-9-eesposit@redhat.com> From: Max Reitz Message-ID: Date: Fri, 30 Apr 2021 14:27:26 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210414170352.29927-9-eesposit@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.22, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Eduardo Habkost , qemu-devel@nongnu.org, Cleber Rosa , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 14.04.21 19:03, Emanuele Giuseppe Esposito wrote: > Signed-off-by: Emanuele Giuseppe Esposito > --- > docs/devel/testing.rst | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst > index b7e2370e7e..2ee77a057b 100644 > --- a/docs/devel/testing.rst > +++ b/docs/devel/testing.rst > @@ -229,6 +229,13 @@ Debugging a test case > QEMU iotests offers some options to debug a failing test, that can be > given as options to the ``check`` script: > > +* ``-gdb`` wraps ``gdbsever`` to the QEMU binary, > + so it is possible to connect to it via gdb. > + One way to do so is via ``gdb -iex "target remote $GDB_QEMU"`` > + The default address is ``localhost:12345``, and can be changed > + by setting the ``$GDB_QEMU`` environmental variable. *environment variable > + The final command line will be ``gdbserver $GDB_QEMU $QEMU ...`` > + I think the order in this explanation is ordered not quite right, because it uses $GDB_QEMU before explaining what it is. (Also, I suppose $GDB_QEMU might contain other options than the socket address, so "target remote $GDB_QEMU" does not necessarily work.) I’d reorder/change it to: ``-gdb`` wraps every QEMU invocation in a ``gdbserver``, which waits for a connection from a gdb client. The options given to ``gdbserver`` (e.g. the address on which to listen for connections) are taken from the ``$GDB_QEMU`` environment variable. By default (if ``$GDB_QEMU`` is empty), it listens on ``localhost:12345``. You can connect to it for example with ``gdb -iex "target remote $addr"``, where ``$addr`` is the address ``gdbserver`` listens on. Max > * ``-d`` (debug) just increases the logging verbosity, showing > for example the QMP commands and answers. > >