Introduce the 'query-accels' QMP command which returns a list of built-in accelerator names.
- Accelerator is a QAPI enum of all existing accelerators, - AcceleratorInfo is a QAPI structure providing accelerator specific information. Currently the common structure base provides the name of the accelerator, while the specific part is empty, but each accelerator can expand it. - 'query-accels' QMP command returns a list of @AcceleratorInfo For example on a KVM-only build we get: { "execute": "query-accels" } { "return": [ { "name": "qtest" }, { "name": "kvm" } ] } Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com> --- Since v1: 'type' -> 'name' in comments --- qapi/machine.json | 55 +++++++++++++++++++++++++++++++++++++++++++++++ accel/accel-qmp.c | 49 +++++++++++++++++++++++++++++++++++++++++ accel/meson.build | 2 +- 3 files changed, 105 insertions(+), 1 deletion(-) create mode 100644 accel/accel-qmp.c diff --git a/qapi/machine.json b/qapi/machine.json index 330189efe3d..610252fc25c 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -1471,3 +1471,58 @@ ## { 'event': 'MEM_UNPLUG_ERROR', 'data': { 'device': 'str', 'msg': 'str' } } + +## +# @Accelerator: +# +# An enumeration of accelerator names. +# +# Since: 6.0 +## +{ 'enum': 'Accelerator', + 'data': [ { 'name': 'qtest' }, + { 'name': 'tcg' }, + { 'name': 'kvm' }, + { 'name': 'hax' }, + { 'name': 'hvf' }, + { 'name': 'whpx' }, + { 'name': 'xen' } ] } + +## +# @AcceleratorInfo: +# +# Accelerator information. +# +# @name: The accelerator name. +# +# Since: 6.0 +## +{ 'union': 'AcceleratorInfo', + 'base': {'name': 'Accelerator'}, + 'discriminator': 'name', + 'data': { } } + +## +# @query-accels: +# +# Get a list of AcceleratorInfo for all built-in accelerators. +# +# Returns: a list of @AcceleratorInfo describing each accelerator. +# +# Since: 6.0 +# +# Example: +# +# -> { "execute": "query-accels" } +# <- { "return": [ +# { +# "name": "qtest" +# }, +# { +# "name": "kvm" +# } +# ] } +# +## +{ 'command': 'query-accels', + 'returns': ['AcceleratorInfo'] } diff --git a/accel/accel-qmp.c b/accel/accel-qmp.c new file mode 100644 index 00000000000..426737b3f9a --- /dev/null +++ b/accel/accel-qmp.c @@ -0,0 +1,49 @@ +/* + * QEMU accelerators, QMP commands + * + * Copyright (c) 2021 Red Hat Inc. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qapi/qapi-commands-machine.h" + +static const bool accel_builtin_list[ACCELERATOR__MAX] = { + [ACCELERATOR_QTEST] = true, +#ifdef CONFIG_TCG + [ACCELERATOR_TCG] = true, +#endif +#ifdef CONFIG_KVM + [ACCELERATOR_KVM] = true, +#endif +#ifdef CONFIG_HAX + [ACCELERATOR_HAX] = true, +#endif +#ifdef CONFIG_HVF + [ACCELERATOR_HVF] = true, +#endif +#ifdef CONFIG_WHPX + [ACCELERATOR_WHPX] = true, +#endif +#ifdef CONFIG_XEN_BACKEND + [ACCELERATOR_XEN] = true, +#endif +}; + +AcceleratorInfoList *qmp_query_accels(Error **errp) +{ + AcceleratorInfoList *list = NULL, **tail = &list; + + for (Accelerator accel = 0; accel < ACCELERATOR__MAX; accel++) { + if (accel_builtin_list[accel]) { + AcceleratorInfo *info = g_new0(AcceleratorInfo, 1); + + info->name = accel; + + QAPI_LIST_APPEND(tail, info); + } + } + + return list; +} diff --git a/accel/meson.build b/accel/meson.build index b44ba30c864..7a48f6d568d 100644 --- a/accel/meson.build +++ b/accel/meson.build @@ -1,4 +1,4 @@ -specific_ss.add(files('accel-common.c')) +specific_ss.add(files('accel-common.c', 'accel-qmp.c')) softmmu_ss.add(files('accel-softmmu.c')) user_ss.add(files('accel-user.c')) -- 2.26.2