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Tue, 8 Jun 2021 17:10:32 +0200 (CEST) From: Markus Armbruster To: Greg Kurz Subject: Re: [PATCH 4/5] monitor: removed cpustats command References: <20210526202104.127910-1-bruno.larsen@eldorado.org.br> <20210526202104.127910-5-bruno.larsen@eldorado.org.br> <20210527084038.512c5270@bahia.lan> Date: Tue, 08 Jun 2021 17:10:32 +0200 In-Reply-To: <20210527084038.512c5270@bahia.lan> (Greg Kurz's message of "Thu, 27 May 2021 08:40:38 +0200") Message-ID: <8735tsxuhj.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Received-SPF: pass client-ip=216.205.24.124; envelope-from=armbru@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=-0.197, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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: farosas@linux.ibm.com, richard.henderson@linaro.org, qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , lucas.araujo@eldorado.org.br, fernando.valle@eldorado.org.br, qemu-ppc@nongnu.org, matheus.ferst@eldorado.org.br, luis.pires@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Greg Kurz writes: > On Wed, 26 May 2021 17:21:03 -0300 > "Bruno Larsen (billionai)" wrote: > >> Since ppc was the last architecture to collect these statistics and >> it is currently phasing this collection out, the command that would query >> this information is being removed. >> > > So this is removing an obviously user visible feature. This should be > mentioned in docs/system/removed-features.rst... but, wait, I don't > see anything for it in docs/system/deprecated.rst. This is dropping > a feature without following the usual deprecation policy, i.e. > marking the feature as deprecated and only remove it 2 QEMU versions > later. Any justification for that ? Our deprecation policy applies to stable interfaces, which HMP is not. We don't break things there just because. But dropping a command right away when it is no longer useful is just fine. No need to deprecate and wait for the grace period. [...]