[PATCH v2] tcg: Remove TCI experimental status

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

The following commits (released in v6.0.0) made raised the
quality of the TCI backend to the other TCG architectures,
thus is is not considerated experimental anymore:
- c6fbea47664..2f74f45e32b
- dc09f047edd..9e9acb7b348
- b6139eb0578..2fc6f16ca5e
- dbcbda2cd84..5e8892db93f

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
v2:
- rebase
- precise sysemu/user (Richard)

Supersedes: <20210920062306.2723797-1-f4bug@amsat.org>
---
 docs/about/build-platforms.rst | 10 ++++++----
 meson.build                    |  4 ++--
 meson_options.txt              |  2 +-
 scripts/meson-buildoptions.sh  |  3 +--
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/docs/about/build-platforms.rst b/docs/about/build-platforms.rst
index bcb15497213..c29a4b8fe64 100644
--- a/docs/about/build-platforms.rst
+++ b/docs/about/build-platforms.rst
@@ -54,10 +54,12 @@ Those hosts are officially supported, with various accelerators:
    * - x86
      - hax, hvf (64 bit only), kvm, nvmm, tcg, whpx (64 bit only), xen
 
-Other host architectures are not supported. It is possible to build QEMU on an
-unsupported host architecture using the configure ``--enable-tcg-interpreter``
-option to enable the experimental TCI support, but note that this is very slow
-and is not recommended.
+Other host architectures are not supported. It is possible to build QEMU system
+emulation on an unsupported host architecture using the configure
+``--enable-tcg-interpreter`` option to enable the TCI support, but note that
+this is very slow and is not recommended for normal use. QEMU user emulation
+requires host-specific support for signal handling, therefore TCI won't help
+on unsupported host architectures.
 
 Non-supported architectures may be removed in the future following the
 :ref:`deprecation process<Deprecated features>`.
diff --git a/meson.build b/meson.build
index 47df10afc21..16de7103d69 100644
--- a/meson.build
+++ b/meson.build
@@ -331,7 +331,7 @@
 if not get_option('tcg').disabled()
   if cpu not in supported_cpus
     if get_option('tcg_interpreter')
-      warning('Unsupported CPU @0@, will use TCG with TCI (experimental and slow)'.format(cpu))
+      warning('Unsupported CPU @0@, will use TCG with TCI (slow)'.format(cpu))
     else
       error('Unsupported CPU @0@, try --enable-tcg-interpreter'.format(cpu))
     endif
@@ -3286,7 +3286,7 @@
 summary_info += {'TCG support':       config_all.has_key('CONFIG_TCG')}
 if config_all.has_key('CONFIG_TCG')
   if get_option('tcg_interpreter')
-    summary_info += {'TCG backend':   'TCI (TCG with bytecode interpreter, experimental and slow)'}
+    summary_info += {'TCG backend':   'TCI (TCG with bytecode interpreter, slow)'}
   else
     summary_info += {'TCG backend':   'native (@0@)'.format(cpu)}
   endif
diff --git a/meson_options.txt b/meson_options.txt
index e740dce2a51..411952bc91a 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -59,7 +59,7 @@ option('xen_pci_passthrough', type: 'feature', value: 'auto',
 option('tcg', type: 'feature', value: 'auto',
        description: 'TCG support')
 option('tcg_interpreter', type: 'boolean', value: false,
-       description: 'TCG with bytecode interpreter (experimental and slow)')
+       description: 'TCG with bytecode interpreter (slow)')
 option('cfi', type: 'boolean', value: 'false',
        description: 'Control-Flow Integrity (CFI)')
 option('cfi_debug', type: 'boolean', value: 'false',
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index 55b8a785600..45e1f2e20da 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -13,8 +13,7 @@ meson_options_help() {
   printf "%s\n" '                           jemalloc/system/tcmalloc)'
   printf "%s\n" '  --enable-slirp[=CHOICE]  Whether and how to find the slirp library'
   printf "%s\n" '                           (choices: auto/disabled/enabled/internal/system)'
-  printf "%s\n" '  --enable-tcg-interpreter TCG with bytecode interpreter (experimental and'
-  printf "%s\n" '                           slow)'
+  printf "%s\n" '  --enable-tcg-interpreter TCG with bytecode interpreter (slow)'
   printf "%s\n" '  --enable-trace-backends=CHOICE'
   printf "%s\n" '                           Set available tracing backends [log] (choices:'
   printf "%s\n" '                           dtrace/ftrace/log/nop/simple/syslog/ust)'
-- 
2.31.1