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[176.184.55.179]) by smtp.gmail.com with ESMTPSA id x10-20020a170906298a00b00a58ed644d6dsm3526332eje.127.2024.04.30.02.40.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 30 Apr 2024 02:40:44 -0700 (PDT) Message-ID: Date: Tue, 30 Apr 2024 11:40:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] docs/about: Automatically deprecate versioned machine types older than 6 years To: Thomas Huth , qemu-devel@nongnu.org, =?UTF-8?Q?Daniel_P_=2E_Berrang=C3=A9?= , Peter Maydell Cc: devel@lists.libvirt.org, =?UTF-8?Q?Alex_Benn=C3=A9e?= , Laurent Vivier , qemu-s390x@nongnu.org, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, Peter Xu , Fabiano Rosas References: <20240430064529.411699-1-thuth@redhat.com> Content-Language: en-US From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: <20240430064529.411699-1-thuth@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::632; envelope-from=philmd@linaro.org; helo=mail-ej1-x632.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 Hi Thomas, On 30/4/24 08:45, Thomas Huth wrote: > Old machine types often have bugs or work-arounds that affect our > possibilities to move forward with the QEMU code base (see for example > https://gitlab.com/qemu-project/qemu/-/issues/2213 for a bug that likely > cannot be fixed without breaking live migration with old machine types, > or https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg04516.html or > commit ea985d235b86). So instead of going through the process of manually > deprecating old machine types again and again, let's rather add an entry > that can stay, which declares that machine types older than 6 years are > considered as deprecated automatically. Six years should be sufficient to > support the release cycles of most Linux distributions. Thanks for taking that out of my plate :) IIRC 6 years was because of some old RHEL version, otherwise could 5 years be enough? (maybe it could be good enough for this old RHEL version as of QEMU v10.0). > Signed-off-by: Thomas Huth > --- > docs/about/deprecated.rst | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst > index 6d595de3b6..fe69e2d44c 100644 > --- a/docs/about/deprecated.rst > +++ b/docs/about/deprecated.rst > @@ -220,6 +220,17 @@ is a chance the code will bitrot without anyone noticing. > System emulator machines > ------------------------ > > +Versioned machine types older than 6 years > +'''''''''''''''''''''''''''''''''''''''''' > + > +Starting with the release of QEMU 10.0, versioned machine types older than Why can't we start with QEMU 9.1? > +6 years will automatically be considered as deprecated and might be due to > +removal without furthor notice. For example, this affects machine types like > +pc-i440fx-X.Y, pc-q35-X.Y, pseries-X.Y, s390-ccw-virtio-X.Y or virt-X.Y where > +X is the major number and Y is the minor number of the old QEMU version. > +If you are still using machine types from QEMU versions older than 6 years, > +please update your setting to use a newer versioned machine type instead. Reviewed-by: Philippe Mathieu-Daudé