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[174.21.71.127]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72f8a78e0f9sm7791026b3a.158.2025.01.27.16.42.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jan 2025 16:42:57 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: thuth@redhat.com, peter.maydell@linaro.org, stefanha@redhat.com, pbonzini@redhat.com, berrange@redhat.com, philmd@linaro.org, mark.cave-ayland@ilande.co.uk, alex.bennee@linaro.org Subject: [PATCH 1/1] meson: Deprecate 32-bit host support Date: Mon, 27 Jan 2025 16:42:54 -0800 Message-ID: <20250128004254.33442-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250128004254.33442-1-richard.henderson@linaro.org> References: <20250128004254.33442-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102b.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org We deprecated i686 system mode support for qemu 8.0. However, to make real cleanups to TCG we need to remove all 32-bit hosts. Signed-off-by: Richard Henderson --- docs/about/deprecated.rst | 8 ++++++++ meson.build | 6 ++---- 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 4a3c302962..a200f4fd28 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -204,6 +204,14 @@ is going to be so much slower it wouldn't make sense for any serious instrumentation. Due to implementation differences there will also be anomalies in things like memory instrumentation. +32-bit host operating systems (since 10.0) +'''''''''''''''''''''''''''''''''''''''''' + +Keeping the 32-bit support alive is a substantial burden for the QEMU +project. Thus QEMU will soon drop the support for 32-bit host systems. +Recent testing on 32-bit host OS has been inadequate at best, apparently +due to lack of interest and usage on such hosts. + System emulator CPUs -------------------- diff --git a/meson.build b/meson.build index 15a066043b..0bf5c93777 100644 --- a/meson.build +++ b/meson.build @@ -4834,14 +4834,12 @@ if host_arch == 'unknown' message('configure has succeeded and you can continue to build, but') message('QEMU will use a slow interpreter to emulate the target CPU.') endif -elif host_arch == 'mips' +elif cc.sizeof('void *') < 8 message() warning('DEPRECATED HOST CPU') message() message('Support for CPU host architecture ' + cpu + ' is going to be') - message('dropped as soon as the QEMU project stops supporting Debian 12') - message('("Bookworm"). Going forward, the QEMU project will not guarantee') - message('that QEMU will compile or work on this host CPU.') + message('dropped in a future QEMU release.') endif if not supported_oses.contains(host_os)