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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id 8sm33457529wrl.7.2020.08.25.10.27.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Aug 2020 10:27:20 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PATCH] Deprecate Unicore32 port Date: Tue, 25 Aug 2020 18:27:19 +0100 Message-Id: <20200825172719.19422-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::443; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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=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: Guan Xuetao , Guan Xuetao Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Deprecate our Unicore32 target support: * the Linux kernel dropped support for unicore32 in commit 05119217a9bd199c for its 5.9 release (with rationale in the cover letter: https://lkml.org/lkml/2020/8/3/232 ) * there is apparently no upstream toolchain that can create unicore32 binaries * the maintainer doesn't seem to have made any contributions to QEMU since the port first landed in 2012 * nobody else seems to have made changes to the unicore code except for generic cleanups either Signed-off-by: Peter Maydell Reviewed-by: Daniel P. Berrangé --- We last considered this back in 2018, but in the end both QEMU and the kernel gave the port a stay of execution; the maintenance situation doesn't seem to have improved, and now the kernel has dropped support and especially given the lack of a toolchain I think it's time to start the deprecation process here. --- docs/system/deprecated.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index 851dbdeb8ab..4c52098c707 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -416,6 +416,14 @@ The above, converted to the current supported format:: linux-user mode CPUs -------------------- +``unicore32`` CPUs (since 5.2.0) +'''''''''''''''''''''''''''''''' + +The ``unicore32`` guest CPU support is deprecated and will be removed in +a future version of QEMU. Support for this CPU was removed from the +upstream Linux kernel, and there is no available upstream toolchain +to build binaries for it. + ``tilegx`` CPUs (since 5.1.0) '''''''''''''''''''''''''''''