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target-arm queue:

Browse source 
* Deprecate pxa2xx CPUs, iwMMXt emulation, -old-param option
  * Drop unused AArch64DecodeTable typedefs
  * Minor code cleanups
  * hw/net/cadence_gem:  Fix the mask/compare/disable-mask logic
  * linux-user: Do not define struct sched_attr if libc headers do
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Merge tag 'pull-target-arm-20250210' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * Deprecate pxa2xx CPUs, iwMMXt emulation, -old-param option
 * Drop unused AArch64DecodeTable typedefs
 * Minor code cleanups
 * hw/net/cadence_gem:  Fix the mask/compare/disable-mask logic
 * linux-user: Do not define struct sched_attr if libc headers do

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 # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
 # gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [full]
 # gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
 # gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
 # Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20250210' of https://git.linaro.org/people/pmaydell/qemu-arm:
  linux-user: Do not define struct sched_attr if libc headers do
  qemu-options: Deprecate -old-param command line option
  hw/net/cadence_gem:  Fix the mask/compare/disable-mask logic
  hw/cpu/arm: Declare CPU QOM types using DEFINE_TYPES() macro
  hw/cpu/arm: Alias 'num-cpu' property on TYPE_REALVIEW_MPCORE
  hw/arm/fsl-imx7: Add local 'mpcore/gic' variables
  hw/arm/fsl-imx6ul: Add local 'mpcore/gic' variables
  hw/arm/fsl-imx6: Add local 'mpcore/gic' variables
  hw/arm/boot: Propagate vCPU to arm_load_dtb()
  target/arm: Drop unused AArch64DecodeTable typedefs
  tests/tcg/arm: Remove test-arm-iwmmxt test
  target/arm: deprecate the pxa2xx CPUs and iwMMXt emulation

Conflicts:
- The iwMMXt deprecation notice conflicted with the 32-bit host
  operating system deprecation notice. Add both notices.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2025-02-10 13:22:07 -05:00
commit 4f1d018512
21 changed files with 205 additions and 249 deletions
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34
docs/about/deprecated.rst
View file

@ -68,6 +68,19 @@ configurations (e.g. -smp drawers=1,books=1,clusters=1 for x86 PC machine) is
marked deprecated since 9.0, users have to ensure that all the topology members
described with -smp are supported by the target machine.
``-old-param`` option for booting Arm kernels via param_struct (since 10.0)
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
The ``-old-param`` command line option is specific to Arm targets:
it is used when directly booting a guest kernel to pass it the
command line and other information via the old ``param_struct`` ABI,
rather than the newer ATAGS or DTB mechanisms. This option was only
ever needed to support ancient kernels on some old board types
like the ``akita`` or ``terrier``; it has been deprecated in the
kernel since 2001. None of the board types QEMU supports need
``param_struct`` support, so this option has been deprecated and will
be removed in a future QEMU version.
User-mode emulator command line arguments
-----------------------------------------
@ -211,6 +224,27 @@ 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.
linux-user mode CPUs
--------------------
iwMMXt emulation and the ``pxa`` CPUs (since 10.0)
''''''''''''''''''''''''''''''''''''''''''''''''''
The ``pxa`` CPU family (``pxa250``, ``pxa255``, ``pxa260``,
``pxa261``, ``pxa262``, ``pxa270-a0``, ``pxa270-a1``, ``pxa270``,
``pxa270-b0``, ``pxa270-b1``, ``pxa270-c0``, ``pxa270-c5``) are no
longer used in system emulation, because all the machine types which
used these CPUs were removed in the QEMU 9.2 release. These CPUs can
now only be used in linux-user mode, and to do that you would have to
explicitly select one of these CPUs with the ``-cpu`` command line
option or the ``QEMU_CPU`` environment variable.
We don't believe that anybody is using the iwMMXt emulation, and we do
not have any tests to validate it or any real hardware or similar
known-good implementation to test against. GCC is in the process of
dropping their support for iwMMXt codegen. These CPU types are
therefore deprecated in QEMU, and will be removed in a future release.
System emulator CPUs
--------------------