Merge tag 'pull-request-2023-03-07' of https://gitlab.com/thuth/qemu into staging

* Refine the distro support policy
* Deprecate 32-bit x86 and arm hosts for system emulation
* Check bison version to be >= 3.0
* Compile vnc test only if vnc is really enabled
* Check docs/config/ich9-ehci-uhci.cfg via the readconfig-test
* s390x: Add support for list-directed IPL from ECKD DASD

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# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
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# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
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* tag 'pull-request-2023-03-07' of https://gitlab.com/thuth/qemu:
  pc-bios/s390-ccw: Update s390-ccw.img with the list-directed IPL fix
  pc-bios: Add support for List-Directed IPL from ECKD DASD
  docs/config: Set the "kvm" accelerator via "[accel]" section
  tests/qtest/readconfig: Test docs/config/ich9-ehci-uhci.cfg
  tests/qtest/readconfig: Rework test_object_rng_resp into a generic function
  gitlab-ci.d/crossbuilds: Drop the 32-bit arm system emulation jobs
  docs/about/deprecated: Deprecate 32-bit arm hosts for system emulation
  gitlab-ci.d/crossbuilds: Drop the i386 system emulation job
  docs/about/deprecated: Deprecate 32-bit x86 hosts for system emulation
  include/hw/i386: Clean up includes in x86.h
  test: Check vnc enable before compiling vnc test
  Hexagon (meson.build): define min bison version
  docs/about/build-platforms: Refine the distro support policy

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 15084f7..33b9422 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -196,6 +196,26 @@ CI coverage support may bitrot away before the deprecation process
 completes. The little endian variants of MIPS (both 32 and 64 bit) are
 still a supported host architecture.
 
+System emulation on 32-bit x86 hosts (since 8.0)
+''''''''''''''''''''''''''''''''''''''''''''''''
+
+Support for 32-bit x86 host deployments is increasingly uncommon in mainstream
+OS distributions given the widespread availability of 64-bit x86 hardware.
+The QEMU project no longer considers 32-bit x86 support for system emulation to
+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
 ----------------------