On 2/5/25 10:05, Philippe Mathieu-Daudé wrote:
On 4/2/25 22:53, Richard Henderson wrote:
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.
Reviewed-by: Thomas Huth <th...@redhat.com>
Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
docs/about/deprecated.rst | 7 +++++++
meson.build | 8 +++-----
2 files changed, 10 insertions(+), 5 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 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 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
--------------------
diff --git a/meson.build b/meson.build
index aa1ca8355d..3347b0a553 100644
--- a/meson.build
+++ b/meson.build
@@ -4843,14 +4843,12 @@ 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 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 guarantee')
- message('that QEMU will compile or work on this host CPU.')
+ message('Support for 32-bit CPU host architecture ' + cpu + ' is going')
+ message('to be dropped in a future QEMU release.')
This change still allows us to remove 32-bit mips host support before
the other architectures, right?
No, bookworm goes into LTS in June 2026, which would match QEMU 11.1 release.
If we add this now, we could (selectively) remove 32-bit support earlier than
that.
r~
