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Tsirkin" , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Zhao Liu , Thomas Huth Subject: [PATCH for-11.1 00/10] Deprecate the qemu-system-i386 binary Date: Thu, 2 Apr 2026 11:51:22 +0200 Message-ID: <20260402095132.29245-1-thuth@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 This is a follow-up to my 3-years old patch series here, now with the universal binary initiative in mind: https://lists.nongnu.org/archive/html/qemu-devel/2023-04/msg04541.html This patch series allows to run qemu-system-x86_64 in 32-bit-only mode (by renaming or symlinking the binary to "qemu-system-i386" or something similar with a "-i386" suffix). After doing this, qemu-system-x86_64 should be a full superset of qemu-system-i386 (apart from 32-bit KVM support, which however is not required anymore now that we removed support for 32-bit hosts). It is now possible to migrate a guest that has been started with an old "qemu-system-i386" binary to a qemu-system-x86_64 binary that has been renamed with a "-i386" suffix. Thus we can finally deprecate the qemu-system-i386 binary. This will help to avoid that we have to compile a lot of the x86 stuff twice once we'll finally be able to drop qemu-system-i386 after the deprecation period expired. Thomas Huth (10): target/i386/tcg/sysemu: Move target specific SMM code to separate functions target/i386/tcg/sysemu: Allow 32-bit SMM code to be used in the 64-bit binary target-info: Add functions for querying whether the target is i386 or x86_64 cpu: Add a way to detect 32-bit mode from argv0 target/i386/cpu: Allow to limit the 64-bit binary to 32-bit mode only target/i386: Select a 32-bit/64-bit default CPU during runtime target/i386: Adjust the suffix of the CPU devices to 32-bit/64-bit mode hw/i386/isapc: Adjust the check for valid CPUs in the isapc machine target/i386: Support migrating from i386 to x86_64 target docs/about/deprecated: Deprecate the qemu-system-i386 binary docs/about/deprecated.rst | 19 +++ include/qemu/target-info.h | 28 ++++ target/i386/cpu.h | 68 ++++++--- hw/i386/isapc.c | 18 ++- system/vl.c | 1 + target-info.c | 37 +++++ target/i386/cpu.c | 59 +++++--- target/i386/gdbstub.c | 2 +- target/i386/host-cpu.c | 6 +- target/i386/machine.c | 222 ++++++++++++++++++++++++++++ target/i386/tcg/system/smm_helper.c | 104 ++++++++----- 11 files changed, 483 insertions(+), 81 deletions(-) -- 2.53.0