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Fri, 04 Jun 2021 08:53:15 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id j14sm9095407wmi.32.2021.06.04.08.53.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 08:53:13 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 8A38D1FF8C; Fri, 4 Jun 2021 16:53:12 +0100 (BST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Subject: [PATCH v16 02/99] accel: Introduce 'query-accels' QMP command Date: Fri, 4 Jun 2021 16:51:35 +0100 Message-Id: <20210604155312.15902-3-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210604155312.15902-1-alex.bennee@linaro.org> References: <20210604155312.15902-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , Richard Henderson , Markus Armbruster , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-arm@nongnu.org, Paolo Bonzini , =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daudé 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" } ] } Note that we can't make the enum values or union branches conditional because of target-specific poisoning of accelerator definitions. Reviewed-by: Eric Blake Reviewed-by: Alex Bennée Tested-by: Alex Bennée Signed-off-by: Philippe Mathieu-Daudé Signed-off-by: Alex Bennée Message-Id: <20210505125806.1263441-3-philmd@redhat.com> --- qapi/machine.json | 47 +++++++++++++++++++++++++++++++++++++++++++++ accel/accel-qmp.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++ accel/meson.build | 2 +- 3 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 accel/accel-qmp.c diff --git a/qapi/machine.json b/qapi/machine.json index 58a9c86b36..79a0891793 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -1274,3 +1274,50 @@ ## { 'event': 'MEM_UNPLUG_ERROR', 'data': { 'device': 'str', 'msg': 'str' } } + +## +# @Accelerator: +# +# An enumeration of accelerator names. +# +# Since: 6.1 +## +{ 'enum': 'Accelerator', + 'data': [ 'hax', 'hvf', 'kvm', 'qtest', 'tcg', 'whpx', 'xen' ] } + +## +# @AcceleratorInfo: +# +# Accelerator information. +# +# @name: The accelerator name. +# +# Since: 6.1 +## +{ 'struct': 'AcceleratorInfo', + 'data': { 'name': 'Accelerator' } } + +## +# @query-accels: +# +# Get a list of AcceleratorInfo for all built-in accelerators. +# +# Returns: a list of @AcceleratorInfo describing each accelerator. +# +# Since: 6.1 +# +# 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 0000000000..426737b3f9 --- /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 b44ba30c86..7a48f6d568 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')) -- 2.20.1