* [PATCH v2] tcg: Remove TCI experimental status
@ 2021-11-06 11:14 Philippe Mathieu-Daudé
2021-11-10 12:07 ` Richard Henderson
0 siblings, 1 reply; 2+ messages in thread
From: Philippe Mathieu-Daudé @ 2021-11-06 11:14 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-trivial, Stefan Weil, Thomas Huth, Richard Henderson,
Philippe Mathieu-Daudé
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] tcg: Remove TCI experimental status
2021-11-06 11:14 [PATCH v2] tcg: Remove TCI experimental status Philippe Mathieu-Daudé
@ 2021-11-10 12:07 ` Richard Henderson
0 siblings, 0 replies; 2+ messages in thread
From: Richard Henderson @ 2021-11-10 12:07 UTC (permalink / raw)
To: Philippe Mathieu-Daudé, qemu-devel
Cc: qemu-trivial, Stefan Weil, Thomas Huth
On 11/6/21 12:14 PM, Philippe Mathieu-Daudé wrote:
> 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(-)
Applied to tcg-next.
r~
^ permalink raw reply [flat|nested] 2+ messages in thread
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