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Tsirkin" , Richard Henderson , Paolo Bonzini Cc: qemu-devel@nongnu.org, Zhenyu Wang , Zhao Liu , Zhuocheng Ding Subject: [PATCH 10/18] i386: Update APIC ID parsing rule to support module level Date: Thu, 2 Feb 2023 17:49:21 +0800 Message-Id: <20230202094929.343799-11-zhao1.liu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230202094929.343799-1-zhao1.liu@linux.intel.com> References: <20230202094929.343799-1-zhao1.liu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=134.134.136.20; envelope-from=zhao1.liu@linux.intel.com; helo=mga02.intel.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Zhuocheng Ding Add the module level parsing support for APIC ID. With this support, now the conversion between X86CPUTopoIDs, X86CPUTopoInfo and APIC ID is completed. Signed-off-by: Zhuocheng Ding Co-developed-by: Zhao Liu Signed-off-by: Zhao Liu --- hw/i386/x86.c | 19 ++++++++----------- include/hw/i386/topology.h | 36 ++++++++++++++++++------------------ 2 files changed, 26 insertions(+), 29 deletions(-) diff --git a/hw/i386/x86.c b/hw/i386/x86.c index b66719230d57..68fce87d18ac 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -310,11 +310,11 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev, /* * If APIC ID is not set, - * set it based on socket/die/core/thread properties. + * set it based on socket/die/cluster/core/thread properties. */ if (cpu->apic_id == UNASSIGNED_APIC_ID) { - int max_socket = (ms->smp.max_cpus - 1) / - smp_threads / smp_cores / ms->smp.dies; + int max_socket = (ms->smp.max_cpus - 1) / smp_threads / smp_cores / + ms->smp.clusters / ms->smp.dies; /* * die-id was optional in QEMU 4.0 and older, so keep it optional @@ -378,15 +378,12 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev, x86_topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids); - /* - * TODO: Before APIC ID supports module level parsing, there's no need - * to expose module_id info. - */ error_setg(errp, - "Invalid CPU [socket: %u, die: %u, core: %u, thread: %u] with" - " APIC ID %" PRIu32 ", valid index range 0:%d", - topo_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id, - cpu->apic_id, ms->possible_cpus->len - 1); + "Invalid CPU [socket: %u, die: %u, module: %u, core: %u, thread: %u]" + " with APIC ID %" PRIu32 ", valid index range 0:%d", + topo_ids.pkg_id, topo_ids.die_id, topo_ids.module_id, + topo_ids.core_id, topo_ids.smt_id, cpu->apic_id, + ms->possible_cpus->len - 1); return; } diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h index 5de905dc00d3..3cec97b377f2 100644 --- a/include/hw/i386/topology.h +++ b/include/hw/i386/topology.h @@ -79,12 +79,13 @@ static inline unsigned apicid_smt_width(X86CPUTopoInfo *topo_info) /* Bit width of the Core_ID field */ static inline unsigned apicid_core_width(X86CPUTopoInfo *topo_info) { - /* - * TODO: Will separate module info from core_width when update - * APIC ID with module level. - */ - return apicid_bitwidth_for_count(topo_info->cores_per_module * - topo_info->modules_per_die); + return apicid_bitwidth_for_count(topo_info->cores_per_module); +} + +/* Bit width of the Module_ID (cluster ID) field */ +static inline unsigned apicid_module_width(X86CPUTopoInfo *topo_info) +{ + return apicid_bitwidth_for_count(topo_info->modules_per_die); } /* Bit width of the Die_ID field */ @@ -99,10 +100,16 @@ static inline unsigned apicid_core_offset(X86CPUTopoInfo *topo_info) return apicid_smt_width(topo_info); } +/* Bit offset of the Module_ID (cluster ID) field */ +static inline unsigned apicid_module_offset(X86CPUTopoInfo *topo_info) +{ + return apicid_core_offset(topo_info) + apicid_core_width(topo_info); +} + /* Bit offset of the Die_ID field */ static inline unsigned apicid_die_offset(X86CPUTopoInfo *topo_info) { - return apicid_core_offset(topo_info) + apicid_core_width(topo_info); + return apicid_module_offset(topo_info) + apicid_module_width(topo_info); } /* Bit offset of the Pkg_ID (socket ID) field */ @@ -121,6 +128,7 @@ static inline apic_id_t x86_apicid_from_topo_ids(X86CPUTopoInfo *topo_info, { return (topo_ids->pkg_id << apicid_pkg_offset(topo_info)) | (topo_ids->die_id << apicid_die_offset(topo_info)) | + (topo_ids->module_id << apicid_module_offset(topo_info)) | (topo_ids->core_id << apicid_core_offset(topo_info)) | topo_ids->smt_id; } @@ -138,11 +146,6 @@ static inline void x86_topo_ids_from_idx(X86CPUTopoInfo *topo_info, unsigned nr_cores = topo_info->cores_per_module; unsigned nr_threads = topo_info->threads_per_core; - /* - * Currently smp for i386 doesn't support "clusters", modules_per_die is - * only 1. Therefore, the module_id generated from the module topology will - * not conflict with the module_id generated according to the apicid. - */ topo_ids->pkg_id = cpu_index / (nr_dies * nr_modules * nr_cores * nr_threads); topo_ids->die_id = cpu_index / (nr_modules * nr_cores * @@ -166,12 +169,9 @@ static inline void x86_topo_ids_from_apicid(apic_id_t apicid, topo_ids->core_id = (apicid >> apicid_core_offset(topo_info)) & ~(0xFFFFFFFFUL << apicid_core_width(topo_info)); - /* - * TODO: This is the temporary initialization for topo_ids.module_id to - * avoid "maybe-uninitialized" compilation errors. Will remove when APIC - * ID supports module level parsing. - */ - topo_ids->module_id = 0; + topo_ids->module_id = + (apicid >> apicid_module_offset(topo_info)) & + ~(0xFFFFFFFFUL << apicid_module_width(topo_info)); topo_ids->die_id = (apicid >> apicid_die_offset(topo_info)) & ~(0xFFFFFFFFUL << apicid_die_width(topo_info)); -- 2.34.1