From 1d0a8eba38cdddd028ea02c6e0b68f0a4c9a3cbf Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Mon, 6 Mar 2023 09:46:57 +0100 Subject: [PATCH] docs/about/deprecated: Deprecate 32-bit arm hosts for system emulation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For running QEMU in system emulation mode, the user needs a rather strong host system, i.e. not only an embedded low-frequency controller. All recent beefy arm host machines should support 64-bit now, it's unlikely that anybody is still seriously using QEMU on a 32-bit arm CPU, so we deprecate the 32-bit arm hosts here to finally save use some time and precious CI minutes. Reviewed-by: Daniel P. Berrangé Reviewed-by: Wilfred Mallawa Message-Id: <20230306084658.29709-5-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Thomas Huth --- docs/about/deprecated.rst | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 1ca9dc33d6..33b942283f 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -206,6 +206,15 @@ be an effective use of its limited resources, and thus intends to discontinue it. Since all recent x86 hardware from the past >10 years is capable of the 64-bit x86 extensions, a corresponding 64-bit OS should be used instead. +System emulation on 32-bit arm hosts (since 8.0) +'''''''''''''''''''''''''''''''''''''''''''''''' + +Since QEMU needs a strong host machine for running full system emulation, and +all recent powerful arm hosts support 64-bit, the QEMU project deprecates the +support for running any system emulation on 32-bit arm hosts in general. Use +64-bit arm hosts for system emulation instead. (Note: "user" mode emulation +continues to be supported on 32-bit arm hosts, too) + QEMU API (QAPI) events ----------------------