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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, mark.cave-ayland@ilande.co.uk, berrange@redhat.com,
philmd@linaro.org, thuth@redhat.com
Subject: [PATCH v2 13/14] meson: Deprecate 32-bit host support
Date: Sun, 2 Feb 2025 19:18:20 -0800
Message-ID: <20250203031821.741477-14-richard.henderson@linaro.org>
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We deprecated i686 system mode support for qemu 8.0. However, to
make real cleanups to TCG we need to deprecate all 32-bit hosts.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Benn=C3=A9e <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
docs/about/deprecated.rst | 7 +++++++
meson.build | 6 ++----
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 4a3c302962..7c61d0ba16 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -204,6 +204,13 @@ is going to be so much slower it wouldn't make sense f=
or any serious
instrumentation. Due to implementation differences there will also be
anomalies in things like memory instrumentation.
=20
+32-bit host operating systems (since 10.0)
+''''''''''''''''''''''''''''''''''''''''''
+
+Keeping 32-bit host support alive is a substantial burden for the
+QEMU project. Thus QEMU will in future drop the support for all
+32-bit host systems.
+
System emulator CPUs
--------------------
=20
diff --git a/meson.build b/meson.build
index 866b8ce477..0dae54da0d 100644
--- a/meson.build
+++ b/meson.build
@@ -4833,14 +4833,12 @@ if host_arch =3D=3D '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 =3D=3D 'mips'
+elif host_long_bits < 64
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 guarante=
e')
- message('that QEMU will compile or work on this host CPU.')
+ message('dropped in a future QEMU release.')
endif
=20
if not supported_oses.contains(host_os)
--=20
2.43.0