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[PATCH v4 14/21] i386/cpu: Introduce cluster-id to X86CPU
From: |
Zhao Liu |
Subject: |
[PATCH v4 14/21] i386/cpu: Introduce cluster-id to X86CPU |
Date: |
Thu, 14 Sep 2023 15:21:52 +0800 |
From: Zhuocheng Ding <zhuocheng.ding@intel.com>
Introduce cluster-id other than module-id to be consistent with
CpuInstanceProperties.cluster-id, and this avoids the confusion
of parameter names when hotplugging.
Following the legacy smp check rules, also add the cluster_id validity
into x86_cpu_pre_plug().
Signed-off-by: Zhuocheng Ding <zhuocheng.ding@intel.com>
Co-developed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
Changes since v3:
* Use the imperative in the commit message. (Babu)
---
hw/i386/x86.c | 33 +++++++++++++++++++++++++--------
target/i386/cpu.c | 2 ++
target/i386/cpu.h | 1 +
3 files changed, 28 insertions(+), 8 deletions(-)
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 5b05dbdedbff..a93f0771d97b 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -325,6 +325,14 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
cpu->die_id = 0;
}
+ /*
+ * cluster-id was optional in QEMU 8.0 and older, so keep it optional
+ * if there's only one cluster per die.
+ */
+ if (cpu->cluster_id < 0 && ms->smp.clusters == 1) {
+ cpu->cluster_id = 0;
+ }
+
if (cpu->socket_id < 0) {
error_setg(errp, "CPU socket-id is not set");
return;
@@ -341,6 +349,14 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
cpu->die_id, ms->smp.dies - 1);
return;
}
+ if (cpu->cluster_id < 0) {
+ error_setg(errp, "CPU cluster-id is not set");
+ return;
+ } else if (cpu->cluster_id > ms->smp.clusters - 1) {
+ error_setg(errp, "Invalid CPU cluster-id: %u must be in range
0:%u",
+ cpu->cluster_id, ms->smp.clusters - 1);
+ return;
+ }
if (cpu->core_id < 0) {
error_setg(errp, "CPU core-id is not set");
return;
@@ -360,16 +376,9 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
topo_ids.pkg_id = cpu->socket_id;
topo_ids.die_id = cpu->die_id;
+ topo_ids.module_id = cpu->cluster_id;
topo_ids.core_id = cpu->core_id;
topo_ids.smt_id = cpu->thread_id;
-
- /*
- * TODO: This is the temporary initialization for topo_ids.module_id to
- * avoid "maybe-uninitialized" compilation errors. Will remove when
- * X86CPU supports cluster_id.
- */
- topo_ids.module_id = 0;
-
cpu->apic_id = x86_apicid_from_topo_ids(&topo_info, &topo_ids);
}
@@ -416,6 +425,14 @@ void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
}
cpu->die_id = topo_ids.die_id;
+ if (cpu->cluster_id != -1 && cpu->cluster_id != topo_ids.module_id) {
+ error_setg(errp, "property cluster-id: %u doesn't match set apic-id:"
+ " 0x%x (cluster-id: %u)", cpu->cluster_id, cpu->apic_id,
+ topo_ids.module_id);
+ return;
+ }
+ cpu->cluster_id = topo_ids.module_id;
+
if (cpu->core_id != -1 && cpu->core_id != topo_ids.core_id) {
error_setg(errp, "property core-id: %u doesn't match set apic-id:"
" 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id,
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index f0ddb253b6b5..d8c5e774cf95 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -7907,12 +7907,14 @@ static Property x86_cpu_properties[] = {
DEFINE_PROP_UINT32("apic-id", X86CPU, apic_id, 0),
DEFINE_PROP_INT32("thread-id", X86CPU, thread_id, 0),
DEFINE_PROP_INT32("core-id", X86CPU, core_id, 0),
+ DEFINE_PROP_INT32("cluster-id", X86CPU, cluster_id, 0),
DEFINE_PROP_INT32("die-id", X86CPU, die_id, 0),
DEFINE_PROP_INT32("socket-id", X86CPU, socket_id, 0),
#else
DEFINE_PROP_UINT32("apic-id", X86CPU, apic_id, UNASSIGNED_APIC_ID),
DEFINE_PROP_INT32("thread-id", X86CPU, thread_id, -1),
DEFINE_PROP_INT32("core-id", X86CPU, core_id, -1),
+ DEFINE_PROP_INT32("cluster-id", X86CPU, cluster_id, -1),
DEFINE_PROP_INT32("die-id", X86CPU, die_id, -1),
DEFINE_PROP_INT32("socket-id", X86CPU, socket_id, -1),
#endif
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 54019e82fdb4..fa1452380882 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -2059,6 +2059,7 @@ struct ArchCPU {
int32_t node_id; /* NUMA node this CPU belongs to */
int32_t socket_id;
int32_t die_id;
+ int32_t cluster_id;
int32_t core_id;
int32_t thread_id;
--
2.34.1
- [PATCH v4 08/21] i386: Split topology types of CPUID[0x1F] from the definitions of CPUID[0xB], (continued)
- [PATCH v4 08/21] i386: Split topology types of CPUID[0x1F] from the definitions of CPUID[0xB], Zhao Liu, 2023/09/14
- [PATCH v4 06/21] i386/cpu: Use APIC ID offset to encode cache topo in CPUID[4], Zhao Liu, 2023/09/14
- [PATCH v4 10/21] i386: Introduce module-level cpu topology to CPUX86State, Zhao Liu, 2023/09/14
- [PATCH v4 11/21] i386: Support modules_per_die in X86CPUTopoInfo, Zhao Liu, 2023/09/14
- [PATCH v4 09/21] i386: Decouple CPUID[0x1F] subleaf with specific topology level, Zhao Liu, 2023/09/14
- [PATCH v4 12/21] i386: Expose module level in CPUID[0x1F], Zhao Liu, 2023/09/14
- [PATCH v4 13/21] i386: Support module_id in X86CPUTopoIDs, Zhao Liu, 2023/09/14
- [PATCH v4 16/21] hw/i386/pc: Support smp.clusters for x86 PC machine, Zhao Liu, 2023/09/14
- [PATCH v4 14/21] i386/cpu: Introduce cluster-id to X86CPU,
Zhao Liu <=
- [PATCH v4 15/21] tests: Add test case of APIC ID for module level parsing, Zhao Liu, 2023/09/14
- [PATCH v4 17/21] i386: Add cache topology info in CPUCacheInfo, Zhao Liu, 2023/09/14
- [PATCH v4 18/21] i386: Use CPUCacheInfo.share_level to encode CPUID[4], Zhao Liu, 2023/09/14
- [PATCH v4 19/21] i386: Use offsets get NumSharingCache for CPUID[0x8000001D].EAX[bits 25:14], Zhao Liu, 2023/09/14
- [PATCH v4 21/21] i386: Add new property to control L2 cache topo in CPUID.04H, Zhao Liu, 2023/09/14
- [PATCH v4 20/21] i386: Use CPUCacheInfo.share_level to encode CPUID[0x8000001D].EAX[bits 25:14], Zhao Liu, 2023/09/14