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Mon, 03 Apr 2023 18:20:14 -0700 (PDT) From: Dinah Baum To: qemu-devel@nongnu.org Cc: Dinah Baum , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Eric Blake , Markus Armbruster , Eduardo Habkost , Marcel Apfelbaum , Yanan Wang , Michael Roth Subject: [PATCH v2 1/3] qapi/machine-target: refactor machine-target Date: Mon, 3 Apr 2023 21:19:54 -0400 Message-Id: <20230404011956.90375-2-dinahbaum123@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230404011956.90375-1-dinahbaum123@gmail.com> References: <20230404011956.90375-1-dinahbaum123@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::82d; envelope-from=dinahbaum123@gmail.com; helo=mail-qt1-x82d.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Moved architecture agnostic data types to their own file to avoid "attempt to use poisoned TARGET_*" error that results when including qapi header with commands that aren't defined for all architectures. Required to implement enabling `query-cpu-model-expansion` on all architectures Signed-off-by: Dinah Baum Reviewed-by: Philippe Mathieu-Daudé --- MAINTAINERS | 1 + qapi/machine-target-common.json | 79 +++++++++++++++++++++++++++++++++ qapi/machine-target.json | 73 +----------------------------- qapi/meson.build | 1 + 4 files changed, 82 insertions(+), 72 deletions(-) create mode 100644 qapi/machine-target-common.json diff --git a/MAINTAINERS b/MAINTAINERS index ef45b5e71e..fbc4d7be66 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1751,6 +1751,7 @@ F: hw/core/numa.c F: hw/cpu/cluster.c F: qapi/machine.json F: qapi/machine-target.json +F: qapi/machine-target-common.json F: include/hw/boards.h F: include/hw/core/cpu.h F: include/hw/cpu/cluster.h diff --git a/qapi/machine-target-common.json b/qapi/machine-target-common.json new file mode 100644 index 0000000000..1e6da3177d --- /dev/null +++ b/qapi/machine-target-common.json @@ -0,0 +1,79 @@ +# -*- Mode: Python -*- +# vim: filetype=python + +## +# = Common data types for machine target commands +## + +## +# @CpuModelInfo: +# +# Virtual CPU model. +# +# A CPU model consists of the name of a CPU definition, to which +# delta changes are applied (e.g. features added/removed). Most magic values +# that an architecture might require should be hidden behind the name. +# However, if required, architectures can expose relevant properties. +# +# @name: the name of the CPU definition the model is based on +# @props: a dictionary of QOM properties to be applied +# +# Since: 2.8 +## +{ 'struct': 'CpuModelInfo', +'data': { 'name': 'str', + '*props': 'any' } } + +## +# @CpuModelExpansionType: +# +# An enumeration of CPU model expansion types. +# +# @static: Expand to a static CPU model, a combination of a static base +# model name and property delta changes. As the static base model will +# never change, the expanded CPU model will be the same, independent of +# QEMU version, machine type, machine options, and accelerator options. +# Therefore, the resulting model can be used by tooling without having +# to specify a compatibility machine - e.g. when displaying the "host" +# model. The @static CPU models are migration-safe. + +# @full: Expand all properties. The produced model is not guaranteed to be +# migration-safe, but allows tooling to get an insight and work with +# model details. +# +# Note: When a non-migration-safe CPU model is expanded in static mode, some +# features enabled by the CPU model may be omitted, because they can't be +# implemented by a static CPU model definition (e.g. cache info passthrough and +# PMU passthrough in x86). If you need an accurate representation of the +# features enabled by a non-migration-safe CPU model, use @full. If you need a +# static representation that will keep ABI compatibility even when changing QEMU +# version or machine-type, use @static (but keep in mind that some features may +# be omitted). +# +# Since: 2.8 +## +{ 'enum': 'CpuModelExpansionType', + 'data': [ 'static', 'full' ] } + +## +# @CpuModelCompareResult: +# +# An enumeration of CPU model comparison results. The result is usually +# calculated using e.g. CPU features or CPU generations. +# +# @incompatible: If model A is incompatible to model B, model A is not +# guaranteed to run where model B runs and the other way around. +# +# @identical: If model A is identical to model B, model A is guaranteed to run +# where model B runs and the other way around. +# +# @superset: If model A is a superset of model B, model B is guaranteed to run +# where model A runs. There are no guarantees about the other way. +# +# @subset: If model A is a subset of model B, model A is guaranteed to run +# where model B runs. There are no guarantees about the other way. +# +# Since: 2.8 +## +{ 'enum': 'CpuModelCompareResult', + 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] } diff --git a/qapi/machine-target.json b/qapi/machine-target.json index 2e267fa458..1cacfde88e 100644 --- a/qapi/machine-target.json +++ b/qapi/machine-target.json @@ -4,78 +4,7 @@ # This work is licensed under the terms of the GNU GPL, version 2 or later. # See the COPYING file in the top-level directory. -## -# @CpuModelInfo: -# -# Virtual CPU model. -# -# A CPU model consists of the name of a CPU definition, to which -# delta changes are applied (e.g. features added/removed). Most magic values -# that an architecture might require should be hidden behind the name. -# However, if required, architectures can expose relevant properties. -# -# @name: the name of the CPU definition the model is based on -# @props: a dictionary of QOM properties to be applied -# -# Since: 2.8 -## -{ 'struct': 'CpuModelInfo', - 'data': { 'name': 'str', - '*props': 'any' } } - -## -# @CpuModelExpansionType: -# -# An enumeration of CPU model expansion types. -# -# @static: Expand to a static CPU model, a combination of a static base -# model name and property delta changes. As the static base model will -# never change, the expanded CPU model will be the same, independent of -# QEMU version, machine type, machine options, and accelerator options. -# Therefore, the resulting model can be used by tooling without having -# to specify a compatibility machine - e.g. when displaying the "host" -# model. The @static CPU models are migration-safe. - -# @full: Expand all properties. The produced model is not guaranteed to be -# migration-safe, but allows tooling to get an insight and work with -# model details. -# -# Note: When a non-migration-safe CPU model is expanded in static mode, some -# features enabled by the CPU model may be omitted, because they can't be -# implemented by a static CPU model definition (e.g. cache info passthrough and -# PMU passthrough in x86). If you need an accurate representation of the -# features enabled by a non-migration-safe CPU model, use @full. If you need a -# static representation that will keep ABI compatibility even when changing QEMU -# version or machine-type, use @static (but keep in mind that some features may -# be omitted). -# -# Since: 2.8 -## -{ 'enum': 'CpuModelExpansionType', - 'data': [ 'static', 'full' ] } - -## -# @CpuModelCompareResult: -# -# An enumeration of CPU model comparison results. The result is usually -# calculated using e.g. CPU features or CPU generations. -# -# @incompatible: If model A is incompatible to model B, model A is not -# guaranteed to run where model B runs and the other way around. -# -# @identical: If model A is identical to model B, model A is guaranteed to run -# where model B runs and the other way around. -# -# @superset: If model A is a superset of model B, model B is guaranteed to run -# where model A runs. There are no guarantees about the other way. -# -# @subset: If model A is a subset of model B, model A is guaranteed to run -# where model B runs. There are no guarantees about the other way. -# -# Since: 2.8 -## -{ 'enum': 'CpuModelCompareResult', - 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] } +{ 'include': 'machine-target-common.json' } ## # @CpuModelBaselineInfo: diff --git a/qapi/meson.build b/qapi/meson.build index 9fd480c4d8..48be47170f 100644 --- a/qapi/meson.build +++ b/qapi/meson.build @@ -38,6 +38,7 @@ qapi_all_modules = [ 'job', 'machine', 'machine-target', + 'machine-target-common', 'migration', 'misc', 'misc-target', From patchwork Tue Apr 4 01:19:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dinah B X-Patchwork-Id: 1764655 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; 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Mon, 03 Apr 2023 18:20:17 -0700 (PDT) From: Dinah Baum To: qemu-devel@nongnu.org Cc: Dinah Baum , Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?= =?utf-8?q?aud=C3=A9?= , Yanan Wang , Richard Henderson , Paolo Bonzini , Eric Blake , Markus Armbruster , Peter Maydell , David Hildenbrand , Ilya Leoshkevich , Thomas Huth , qemu-arm@nongnu.org (open list:ARM TCG CPUs), qemu-s390x@nongnu.org (open list:S390 TCG CPUs) Subject: [PATCH v2 2/3] cpu, qapi, target/arm, i386, s390x: Generalize query-cpu-model-expansion Date: Mon, 3 Apr 2023 21:19:55 -0400 Message-Id: <20230404011956.90375-3-dinahbaum123@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230404011956.90375-1-dinahbaum123@gmail.com> References: <20230404011956.90375-1-dinahbaum123@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::f2e; envelope-from=dinahbaum123@gmail.com; helo=mail-qv1-xf2e.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch enables 'query-cpu-model-expansion' on all architectures. Only architectures that implement the command will return results, others will return an error message as before. This patch lays the groundwork for parsing a -cpu cpu,help option as specified in https://gitlab.com/qemu-project/qemu/-/issues/1480 Signed-off-by: Dinah Baum --- cpu.c | 20 ++++++++++++ include/exec/cpu-common.h | 8 +++++ qapi/machine-target-common.json | 51 +++++++++++++++++++++++++++++ qapi/machine-target.json | 56 -------------------------------- target/arm/arm-qmp-cmds.c | 7 ++-- target/arm/cpu.h | 7 +++- target/i386/cpu-sysemu.c | 7 ++-- target/i386/cpu.h | 6 ++++ target/s390x/cpu.h | 7 ++++ target/s390x/cpu_models_sysemu.c | 6 ++-- 10 files changed, 108 insertions(+), 67 deletions(-) diff --git a/cpu.c b/cpu.c index 849bac062c..daf4e1ff0d 100644 --- a/cpu.c +++ b/cpu.c @@ -292,6 +292,26 @@ void list_cpus(const char *optarg) #endif } +CpuModelExpansionInfo *get_cpu_model_expansion_info(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) +{ + /* XXX: implement cpu_model_expansion for targets that still miss it */ +#if defined(cpu_model_expansion) + return cpu_model_expansion(type, model, errp); +#else + error_setg(errp, "Could not query cpu model information"); + return NULL; +#endif +} + +CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) +{ + return get_cpu_model_expansion_info(type, model, errp); +} + #if defined(CONFIG_USER_ONLY) void tb_invalidate_phys_addr(target_ulong addr) { diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index 6feaa40ca7..ec6024dfde 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -7,6 +7,8 @@ #include "exec/hwaddr.h" #endif +#include "qapi/qapi-commands-machine-target-common.h" + /** * vaddr: * Type wide enough to contain any #target_ulong virtual address. @@ -166,5 +168,11 @@ int cpu_memory_rw_debug(CPUState *cpu, vaddr addr, extern int singlestep; void list_cpus(const char *optarg); +typedef void (*cpu_model_expansion_func)(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp); +CpuModelExpansionInfo *get_cpu_model_expansion_info(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp); #endif /* CPU_COMMON_H */ diff --git a/qapi/machine-target-common.json b/qapi/machine-target-common.json index 1e6da3177d..44713e9935 100644 --- a/qapi/machine-target-common.json +++ b/qapi/machine-target-common.json @@ -77,3 +77,54 @@ ## { 'enum': 'CpuModelCompareResult', 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] } + +## +# @CpuModelExpansionInfo: +# +# The result of a cpu model expansion. +# +# @model: the expanded CpuModelInfo. +# +# Since: 2.8 +## +{ 'struct': 'CpuModelExpansionInfo', + 'data': { 'model': 'CpuModelInfo' } } + +## +# @query-cpu-model-expansion: +# +# Expands a given CPU model (or a combination of CPU model + additional options) +# to different granularities, allowing tooling to get an understanding what a +# specific CPU model looks like in QEMU under a certain configuration. +# +# This interface can be used to query the "host" CPU model. +# +# The data returned by this command may be affected by: +# +# * QEMU version: CPU models may look different depending on the QEMU version. +# (Except for CPU models reported as "static" in query-cpu-definitions.) +# * machine-type: CPU model may look different depending on the machine-type. +# (Except for CPU models reported as "static" in query-cpu-definitions.) +# * machine options (including accelerator): in some architectures, CPU models +# may look different depending on machine and accelerator options. (Except for +# CPU models reported as "static" in query-cpu-definitions.) +# * "-cpu" arguments and global properties: arguments to the -cpu option and +# global properties may affect expansion of CPU models. Using +# query-cpu-model-expansion while using these is not advised. +# +# Some architectures may not support all expansion types. s390x supports +# "full" and "static". Arm only supports "full". +# +# Returns: a CpuModelExpansionInfo. Returns an error if expanding CPU models is +# not supported, if the model cannot be expanded, if the model contains +# an unknown CPU definition name, unknown properties or properties +# with a wrong type. Also returns an error if an expansion type is +# not supported. +# +# Since: 2.8 +## +{ 'command': 'query-cpu-model-expansion', + 'data': { 'type': 'CpuModelExpansionType', + 'model': 'CpuModelInfo' }, + 'returns': 'CpuModelExpansionInfo' } + diff --git a/qapi/machine-target.json b/qapi/machine-target.json index 1cacfde88e..cfc8b0c7f8 100644 --- a/qapi/machine-target.json +++ b/qapi/machine-target.json @@ -130,62 +130,6 @@ 'returns': 'CpuModelBaselineInfo', 'if': 'TARGET_S390X' } -## -# @CpuModelExpansionInfo: -# -# The result of a cpu model expansion. -# -# @model: the expanded CpuModelInfo. -# -# Since: 2.8 -## -{ 'struct': 'CpuModelExpansionInfo', - 'data': { 'model': 'CpuModelInfo' }, - 'if': { 'any': [ 'TARGET_S390X', - 'TARGET_I386', - 'TARGET_ARM' ] } } - -## -# @query-cpu-model-expansion: -# -# Expands a given CPU model (or a combination of CPU model + additional options) -# to different granularities, allowing tooling to get an understanding what a -# specific CPU model looks like in QEMU under a certain configuration. -# -# This interface can be used to query the "host" CPU model. -# -# The data returned by this command may be affected by: -# -# * QEMU version: CPU models may look different depending on the QEMU version. -# (Except for CPU models reported as "static" in query-cpu-definitions.) -# * machine-type: CPU model may look different depending on the machine-type. -# (Except for CPU models reported as "static" in query-cpu-definitions.) -# * machine options (including accelerator): in some architectures, CPU models -# may look different depending on machine and accelerator options. (Except for -# CPU models reported as "static" in query-cpu-definitions.) -# * "-cpu" arguments and global properties: arguments to the -cpu option and -# global properties may affect expansion of CPU models. Using -# query-cpu-model-expansion while using these is not advised. -# -# Some architectures may not support all expansion types. s390x supports -# "full" and "static". Arm only supports "full". -# -# Returns: a CpuModelExpansionInfo. Returns an error if expanding CPU models is -# not supported, if the model cannot be expanded, if the model contains -# an unknown CPU definition name, unknown properties or properties -# with a wrong type. Also returns an error if an expansion type is -# not supported. -# -# Since: 2.8 -## -{ 'command': 'query-cpu-model-expansion', - 'data': { 'type': 'CpuModelExpansionType', - 'model': 'CpuModelInfo' }, - 'returns': 'CpuModelExpansionInfo', - 'if': { 'any': [ 'TARGET_S390X', - 'TARGET_I386', - 'TARGET_ARM' ] } } - ## # @CpuDefinitionInfo: # diff --git a/target/arm/arm-qmp-cmds.c b/target/arm/arm-qmp-cmds.c index c8fa524002..e591e7c362 100644 --- a/target/arm/arm-qmp-cmds.c +++ b/target/arm/arm-qmp-cmds.c @@ -21,6 +21,7 @@ */ #include "qemu/osdep.h" +#include "cpu.h" #include "hw/boards.h" #include "kvm_arm.h" #include "qapi/error.h" @@ -99,9 +100,9 @@ static const char *cpu_model_advertised_features[] = { NULL }; -CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, - CpuModelInfo *model, - Error **errp) +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) { CpuModelExpansionInfo *expansion_info; const QDict *qdict_in = NULL; diff --git a/target/arm/cpu.h b/target/arm/cpu.h index c097cae988..d5dcc2ef11 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -2660,7 +2660,12 @@ bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync); #define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU #define cpu_list arm_cpu_list - +#ifdef CONFIG_SOFTMMU +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp); +#define cpu_model_expansion get_cpu_model_expansion +#endif /* ARM has the following "translation regimes" (as the ARM ARM calls them): * * If EL3 is 64-bit: diff --git a/target/i386/cpu-sysemu.c b/target/i386/cpu-sysemu.c index 28115edf44..c01c85839c 100644 --- a/target/i386/cpu-sysemu.c +++ b/target/i386/cpu-sysemu.c @@ -176,10 +176,9 @@ out: return xc; } -CpuModelExpansionInfo * -qmp_query_cpu_model_expansion(CpuModelExpansionType type, - CpuModelInfo *model, - Error **errp) +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) { X86CPU *xc = NULL; Error *err = NULL; diff --git a/target/i386/cpu.h b/target/i386/cpu.h index d243e290d3..7ab633c642 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2209,6 +2209,12 @@ uint64_t cpu_get_tsc(CPUX86State *env); #endif #define cpu_list x86_cpu_list +#ifdef CONFIG_SOFTMMU +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp); +#define cpu_model_expansion get_cpu_model_expansion +#endif /* MMU modes definitions */ #define MMU_KSMAP_IDX 0 diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index c47e7adcb1..da5d9b4bf9 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -810,6 +810,13 @@ void s390_cpu_list(void); void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, const S390FeatInit feat_init); +#ifdef CONFIG_SOFTMMU +/* cpu_models-sysemu.c */ +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp); +#define cpu_model_expansion get_cpu_model_expansion +#endif /* helper.c */ #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU diff --git a/target/s390x/cpu_models_sysemu.c b/target/s390x/cpu_models_sysemu.c index 63981bf36b..ef3845f11c 100644 --- a/target/s390x/cpu_models_sysemu.c +++ b/target/s390x/cpu_models_sysemu.c @@ -213,9 +213,9 @@ static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, } } -CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, - CpuModelInfo *model, - Error **errp) +CpuModelExpansionInfo *get_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) { Error *err = NULL; 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Mon, 03 Apr 2023 18:20:19 -0700 (PDT) Received: from debian.hsd1.ma.comcast.net ([2601:182:cc00:77b0::3e69]) by smtp.gmail.com with ESMTPSA id i4-20020a05620a248400b0074865a9cb34sm3229909qkn.28.2023.04.03.18.20.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Apr 2023 18:20:19 -0700 (PDT) From: Dinah Baum To: qemu-devel@nongnu.org Cc: Dinah Baum , Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?= =?utf-8?q?aud=C3=A9?= , Yanan Wang , Richard Henderson , Paolo Bonzini , Markus Armbruster Subject: [PATCH v2 3/3] cpu, qdict, vl: Enable printing options for CPU type Date: Mon, 3 Apr 2023 21:19:56 -0400 Message-Id: <20230404011956.90375-4-dinahbaum123@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230404011956.90375-1-dinahbaum123@gmail.com> References: <20230404011956.90375-1-dinahbaum123@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::831; envelope-from=dinahbaum123@gmail.com; helo=mail-qt1-x831.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Change parsing of -cpu argument to allow -cpu cpu,help to print options for the CPU type similar to how the '-device' option works. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1480 Signed-off-by: Dinah Baum --- cpu.c | 41 +++++++++++++++++++++++++++++++++++++++ include/exec/cpu-common.h | 2 ++ include/qapi/qmp/qdict.h | 2 ++ qemu-options.hx | 7 ++++--- qobject/qdict.c | 5 +++++ softmmu/vl.c | 36 ++++++++++++++++++++++++++++++++-- 6 files changed, 88 insertions(+), 5 deletions(-) diff --git a/cpu.c b/cpu.c index daf4e1ff0d..5f8a72e51f 100644 --- a/cpu.c +++ b/cpu.c @@ -23,7 +23,9 @@ #include "exec/target_page.h" #include "hw/qdev-core.h" #include "hw/qdev-properties.h" +#include "qemu/cutils.h" #include "qemu/error-report.h" +#include "qemu/qemu-print.h" #include "migration/vmstate.h" #ifdef CONFIG_USER_ONLY #include "qemu.h" @@ -43,6 +45,8 @@ #include "trace/trace-root.h" #include "qemu/accel.h" #include "qemu/plugin.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qmp/qobject.h" uintptr_t qemu_host_page_size; intptr_t qemu_host_page_mask; @@ -312,6 +316,43 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, return get_cpu_model_expansion_info(type, model, errp); } +void list_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) +{ + CpuModelExpansionInfo *expansion_info; + QDict *qdict; + QDictEntry *qdict_entry; + const char *key; + QObject *obj; + QType q_type; + GPtrArray *array; + int i; + const char *type_name; + + expansion_info = get_cpu_model_expansion_info(type, model, errp); + if (expansion_info) { + qdict = qobject_to(QDict, expansion_info->model->props); + if (qdict) { + qemu_printf("%s features:\n", model->name); + array = g_ptr_array_new(); + for (qdict_entry = (QDictEntry *)qdict_first(qdict); qdict_entry; + qdict_entry = (QDictEntry *)qdict_next(qdict, qdict_entry)) { + g_ptr_array_add(array, qdict_entry); + } + g_ptr_array_sort(array, (GCompareFunc)dict_key_compare); + for (i = 0; i < array->len; i++) { + qdict_entry = array->pdata[i]; + key = qdict_entry_key(qdict_entry); + obj = qdict_get(qdict, key); + q_type = qobject_type(obj); + type_name = QType_str(q_type); + qemu_printf(" %s=<%s>\n", key, type_name); + } + } + } +} + #if defined(CONFIG_USER_ONLY) void tb_invalidate_phys_addr(target_ulong addr) { diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index ec6024dfde..8fc05307ad 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -174,5 +174,7 @@ typedef void (*cpu_model_expansion_func)(CpuModelExpansionType type, CpuModelExpansionInfo *get_cpu_model_expansion_info(CpuModelExpansionType type, CpuModelInfo *model, Error **errp); +void list_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, Error **errp); #endif /* CPU_COMMON_H */ diff --git a/include/qapi/qmp/qdict.h b/include/qapi/qmp/qdict.h index 82e90fc072..1ff9523a13 100644 --- a/include/qapi/qmp/qdict.h +++ b/include/qapi/qmp/qdict.h @@ -68,4 +68,6 @@ const char *qdict_get_try_str(const QDict *qdict, const char *key); QDict *qdict_clone_shallow(const QDict *src); +int dict_key_compare(QDictEntry **entry1, QDictEntry **entry2); + #endif /* QDICT_H */ diff --git a/qemu-options.hx b/qemu-options.hx index 59bdf67a2c..10601626b7 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -169,11 +169,12 @@ SRST ERST DEF("cpu", HAS_ARG, QEMU_OPTION_cpu, - "-cpu cpu select CPU ('-cpu help' for list)\n", QEMU_ARCH_ALL) + "-cpu cpu select CPU ('-cpu help' for list)\n" + " use '-cpu cpu,help' to print possible properties\n", QEMU_ARCH_ALL) SRST ``-cpu model`` - Select CPU model (``-cpu help`` for list and additional feature - selection) + Select CPU model (``-cpu help`` and ``-cpu cpu,help``) for list and additional feature + selection ERST DEF("accel", HAS_ARG, QEMU_OPTION_accel, diff --git a/qobject/qdict.c b/qobject/qdict.c index 8faff230d3..31407e62f6 100644 --- a/qobject/qdict.c +++ b/qobject/qdict.c @@ -447,3 +447,8 @@ void qdict_unref(QDict *q) { qobject_unref(q); } + +int dict_key_compare(QDictEntry **entry1, QDictEntry **entry2) +{ + return g_strcmp0(qdict_entry_key(*entry1), qdict_entry_key(*entry2)); +} diff --git a/softmmu/vl.c b/softmmu/vl.c index ea20b23e4c..af6753a7e3 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -500,6 +500,15 @@ static QemuOptsList qemu_action_opts = { }, }; +static QemuOptsList qemu_cpu_opts = { + .name = "cpu", + .implied_opt_name = "cpu", + .head = QTAILQ_HEAD_INITIALIZER(qemu_cpu_opts.head), + .desc = { + { /* end of list */ } + }, +}; + const char *qemu_get_vm_name(void) { return qemu_name; @@ -1147,6 +1156,26 @@ static int device_init_func(void *opaque, QemuOpts *opts, Error **errp) return 0; } +static int cpu_help_func(void *opaque, QemuOpts *opts, Error **errp) +{ + CpuModelInfo *model; + + if (cpu_option && is_help_option(cpu_option)) { + list_cpus(cpu_option); + return 1; + } + + if (!cpu_option || !qemu_opt_has_help_opt(opts)) { + return 0; + } + + model = g_new0(CpuModelInfo, 1); + model->name = (char *)qemu_opt_get(opts, "cpu"); + /* TODO: handle other expansion cases */ + list_cpu_model_expansion(CPU_MODEL_EXPANSION_TYPE_FULL, model, errp); + return 1; +} + static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp) { Error *local_err = NULL; @@ -2431,8 +2460,9 @@ static void qemu_process_help_options(void) * type and the user did not specify one, so that the user doesn't need * to say '-cpu help -machine something'. */ - if (cpu_option && is_help_option(cpu_option)) { - list_cpus(cpu_option); + Error *errp = NULL; + if (qemu_opts_foreach(qemu_find_opts("cpu"), + cpu_help_func, NULL, &errp)) { exit(0); } @@ -2673,6 +2703,7 @@ void qemu_init(int argc, char **argv) qemu_add_opts(&qemu_semihosting_config_opts); qemu_add_opts(&qemu_fw_cfg_opts); qemu_add_opts(&qemu_action_opts); + qemu_add_opts(&qemu_cpu_opts); module_call_init(MODULE_INIT_OPTS); error_init(argv[0]); @@ -2724,6 +2755,7 @@ void qemu_init(int argc, char **argv) switch(popt->index) { case QEMU_OPTION_cpu: /* hw initialization will check this */ + qemu_opts_parse_noisily(qemu_find_opts("cpu"), optarg, true); cpu_option = optarg; break; case QEMU_OPTION_hda: