[v2,01/38] x86/cpu: Encapsulate topology information in cpuinfo_x86

Message ID	20230728120929.721437044@linutronix.de (mailing list archive)
State	Handled Elsewhere
Headers	show Return-Path: <linux-hwmon-owner@vger.kernel.org> Message-ID: <20230728120929.721437044@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, Tom Lendacky <thomas.lendacky@amd.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Arjan van de Ven <arjan@linux.intel.com>, "James E.J. Bottomley" <jejb@linux.ibm.com>, Dick Kennedy <dick.kennedy@broadcom.com>, James Smart <james.smart@broadcom.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, linux-scsi@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>, linux-hwmon@vger.kernel.org, Jean Delvare <jdelvare@suse.com>, Huang Rui <ray.huang@amd.com>, Juergen Gross <jgross@suse.com>, Steve Wahl <steve.wahl@hpe.com>, Mike Travis <mike.travis@hpe.com>, Dimitri Sivanich <dimitri.sivanich@hpe.com>, Russ Anderson <russ.anderson@hpe.com> Subject: [patch v2 01/38] x86/cpu: Encapsulate topology information in cpuinfo_x86 References: <20230728105650.565799744@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Fri, 28 Jul 2023 14:12:43 +0200 (CEST) Precedence: bulk
Series	x86/cpu: Rework the topology evaluation \| expand [v2,00/38] x86/cpu: Rework the topology evaluation [v2,01/38] x86/cpu: Encapsulate topology information in cpuinfo_x86 [v2,02/38] x86/cpu: Move phys_proc_id into topology info [v2,03/38] x86/cpu: Move cpu_die_id into topology info [v2,04/38] scsi: lpfc: Use topology_core_id() [v2,05/38] hwmon: (fam15h_power) Use topology_core_id() [v2,06/38] x86/cpu: Move cpu_core_id into topology info [v2,07/38] x86/cpu: Move cu_id into topology info [v2,08/38] x86/cpu: Remove pointless evaluation of x86_coreid_bits [v2,09/38] x86/cpu: Move logical package and die IDs into topology info [v2,10/38] x86/cpu: Move cpu_l[l2]c_id into topology info [v2,11/38] x86/apic: Use BAD_APICID consistently; [v2,12/38] x86/apic: Use u32 for APIC IDs in global data [v2,13/38] x86/apic: Use u32 for check_apicid_used() [v2,14/38] x86/apic: Use u32 for cpu_present_to_apicid() [v2,15/38] x86/apic: Use u32 for phys_pkg_id() [v2,16/38] x86/apic: Use u32 for [gs]et_apic_id() [v2,17/38] x86/apic: Use u32 for wakeup_secondary_cpu[_64]() [v2,18/38] x86/cpu/topology: Cure the abuse of cpuinfo for persisting logical ids [v2,19/38] x86/cpu: Provide debug interface [v2,20/38] x86/cpu: Provide cpuid_read() et al. [v2,21/38] x86/cpu: Provide cpu_init/parse_topology() [v2,22/38] x86/cpu: Add legacy topology parser [v2,23/38] x86/cpu: Use common topology code for Centaur and Zhaoxin [v2,24/38] x86/cpu: Move __max_die_per_package to common.c [v2,25/38] x86/cpu: Provide a sane leaf 0xb/0x1f parser [v2,26/38] x86/cpu: Use common topology code for Intel [v2,27/38] x86/cpu/amd: Provide a separate acessor for Node ID [v2,28/38] x86/cpu: Provide an AMD/HYGON specific topology parser [v2,29/38] x86/smpboot: Teach it about topo.amd_node_id [v2,30/38] x86/cpu: Use common topology code for AMD [v2,31/38] x86/cpu: Use common topology code for HYGON [v2,32/38] x86/mm/numa: Use core domain size on AMD [v2,33/38] x86/cpu: Make topology_amd_node_id() use the actual node info [v2,34/38] x86/cpu: Remove topology.c [v2,35/38] x86/cpu: Remove x86_coreid_bits [v2,36/38] x86/apic: Remove unused phys_pkg_id() callback [v2,37/38] x86/xen/smp_pv: Remove cpudata fiddling [v2,38/38] x86/apic/uv: Remove the private leaf 0xb parser

--- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -74,11 +74,16 @@ extern u16 __read_mostly tlb_lld_4m[NR_I extern u16 __read_mostly tlb_lld_1g[NR_INFO]; /* - * CPU type and hardware bug flags. Kept separately for each CPU. - * Members of this structure are referenced in head_32.S, so think twice - * before touching them. [mj] + * CPU type and hardware bug flags. Kept separately for each CPU. */ +struct cpuinfo_topology { + // Real APIC ID read from the local APIC + u32 apicid; + // The initial APIC ID provided by CPUID + u32 initial_apicid; +}; + struct cpuinfo_x86 { __u8 x86; /* CPU family */ __u8 x86_vendor; /* CPU vendor */ @@ -111,6 +116,7 @@ struct cpuinfo_x86 { }; char x86_vendor_id[16]; char x86_model_id[64]; + struct cpuinfo_topology topo; /* in KB - valid for CPUS which support this call: */ unsigned int x86_cache_size; int x86_cache_alignment; /* In bytes */ @@ -124,8 +130,6 @@ struct cpuinfo_x86 { u64 ppin; /* cpuid returned max cores value: */ u16 x86_max_cores; - u16 apicid; - u16 initial_apicid; u16 x86_clflush_size; /* number of cores as seen by the OS: */ u16 booted_cores; --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -387,9 +387,9 @@ static void amd_detect_cmp(struct cpuinf bits = c->x86_coreid_bits; /* Low order bits define the core id (index of core in socket) */ - c->cpu_core_id = c->initial_apicid & ((1 << bits)-1); + c->cpu_core_id = c->topo.initial_apicid & ((1 << bits)-1); /* Convert the initial APIC ID into the socket ID */ - c->phys_proc_id = c->initial_apicid >> bits; + c->phys_proc_id = c->topo.initial_apicid >> bits; /* use socket ID also for last level cache */ per_cpu(cpu_llc_id, cpu) = c->cpu_die_id = c->phys_proc_id; } @@ -405,7 +405,7 @@ static void srat_detect_node(struct cpui #ifdef CONFIG_NUMA int cpu = smp_processor_id(); int node; - unsigned apicid = c->apicid; + unsigned apicid = c->topo.apicid; node = numa_cpu_node(cpu); if (node == NUMA_NO_NODE) @@ -439,7 +439,7 @@ static void srat_detect_node(struct cpui * through CPU mapping may alter the outcome, directly * access __apicid_to_node[]. */ - int ht_nodeid = c->initial_apicid; + int ht_nodeid = c->topo.initial_apicid; if (__apicid_to_node[ht_nodeid] != NUMA_NO_NODE) node = __apicid_to_node[ht_nodeid]; @@ -934,7 +934,7 @@ static void init_amd(struct cpuinfo_x86 set_cpu_cap(c, X86_FEATURE_FSRS); /* get apicid instead of initial apic id from cpuid */ - c->apicid = read_apic_id(); + c->topo.apicid = read_apic_id(); /* K6s reports MCEs but don't actually have all the MSRs */ if (c->x86 < 6) --- a/arch/x86/kernel/cpu/cacheinfo.c +++ b/arch/x86/kernel/cpu/cacheinfo.c @@ -678,7 +678,7 @@ void cacheinfo_amd_init_llc_id(struct cp * LLC is at the core complex level. * Core complex ID is ApicId[3] for these processors. */ - per_cpu(cpu_llc_id, cpu) = c->apicid >> 3; + per_cpu(cpu_llc_id, cpu) = c->topo.apicid >> 3; } else { /* * LLC ID is calculated from the number of threads sharing the @@ -694,7 +694,7 @@ void cacheinfo_amd_init_llc_id(struct cp if (num_sharing_cache) { int bits = get_count_order(num_sharing_cache); - per_cpu(cpu_llc_id, cpu) = c->apicid >> bits; + per_cpu(cpu_llc_id, cpu) = c->topo.apicid >> bits; } } } @@ -712,7 +712,7 @@ void cacheinfo_hygon_init_llc_id(struct * LLC is at the core complex level. * Core complex ID is ApicId[3] for these processors. */ - per_cpu(cpu_llc_id, cpu) = c->apicid >> 3; + per_cpu(cpu_llc_id, cpu) = c->topo.apicid >> 3; } void init_amd_cacheinfo(struct cpuinfo_x86 *c) @@ -776,13 +776,13 @@ void init_intel_cacheinfo(struct cpuinfo new_l2 = this_leaf.size/1024; num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing; index_msb = get_count_order(num_threads_sharing); - l2_id = c->apicid & ~((1 << index_msb) - 1); + l2_id = c->topo.apicid & ~((1 << index_msb) - 1); break; case 3: new_l3 = this_leaf.size/1024; num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing; index_msb = get_count_order(num_threads_sharing); - l3_id = c->apicid & ~((1 << index_msb) - 1); + l3_id = c->topo.apicid & ~((1 << index_msb) - 1); break; default: break; @@ -915,7 +915,7 @@ static int __cache_amd_cpumap_setup(unsi unsigned int apicid, nshared, first, last; nshared = base->eax.split.num_threads_sharing + 1; - apicid = cpu_data(cpu).apicid; + apicid = cpu_data(cpu).topo.apicid; first = apicid - (apicid % nshared); last = first + nshared - 1; @@ -924,14 +924,14 @@ static int __cache_amd_cpumap_setup(unsi if (!this_cpu_ci->info_list) continue; - apicid = cpu_data(i).apicid; + apicid = cpu_data(i).topo.apicid; if ((apicid < first) || (apicid > last)) continue; this_leaf = this_cpu_ci->info_list + index; for_each_online_cpu(sibling) { - apicid = cpu_data(sibling).apicid; + apicid = cpu_data(sibling).topo.apicid; if ((apicid < first) || (apicid > last)) continue; cpumask_set_cpu(sibling, @@ -969,7 +969,7 @@ static void __cache_cpumap_setup(unsigne index_msb = get_count_order(num_threads_sharing); for_each_online_cpu(i) - if (cpu_data(i).apicid >> index_msb == c->apicid >> index_msb) { + if (cpu_data(i).topo.apicid >> index_msb == c->topo.apicid >> index_msb) { struct cpu_cacheinfo *sib_cpu_ci = get_cpu_cacheinfo(i); if (i == cpu || !sib_cpu_ci->info_list) @@ -1024,7 +1024,7 @@ static void get_cache_id(int cpu, struct num_threads_sharing = 1 + id4_regs->eax.split.num_threads_sharing; index_msb = get_count_order(num_threads_sharing); - id4_regs->id = c->apicid >> index_msb; + id4_regs->id = c->topo.apicid >> index_msb; } int populate_cache_leaves(unsigned int cpu) --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -899,7 +899,7 @@ void detect_ht(struct cpuinfo_x86 *c) return; index_msb = get_count_order(smp_num_siblings); - c->phys_proc_id = apic->phys_pkg_id(c->initial_apicid, index_msb); + c->phys_proc_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb); smp_num_siblings = smp_num_siblings / c->x86_max_cores; @@ -907,7 +907,7 @@ void detect_ht(struct cpuinfo_x86 *c) core_bits = get_count_order(c->x86_max_cores); - c->cpu_core_id = apic->phys_pkg_id(c->initial_apicid, index_msb) & + c->cpu_core_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb) & ((1 << core_bits) - 1); #endif } @@ -1721,15 +1721,15 @@ static void generic_identify(struct cpui get_cpu_address_sizes(c); if (c->cpuid_level >= 0x00000001) { - c->initial_apicid = (cpuid_ebx(1) >> 24) & 0xFF; + c->topo.initial_apicid = (cpuid_ebx(1) >> 24) & 0xFF; #ifdef CONFIG_X86_32 # ifdef CONFIG_SMP - c->apicid = apic->phys_pkg_id(c->initial_apicid, 0); + c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); # else - c->apicid = c->initial_apicid; + c->topo.apicid = c->topo.initial_apicid; # endif #endif - c->phys_proc_id = c->initial_apicid; + c->phys_proc_id = c->topo.initial_apicid; } get_model_name(c); /* Default name */ @@ -1763,9 +1763,9 @@ static void validate_apic_and_package_id apicid = apic->cpu_present_to_apicid(cpu); - if (apicid != c->apicid) { + if (apicid != c->topo.apicid) { pr_err(FW_BUG "CPU%u: APIC id mismatch. Firmware: %x APIC: %x\n", - cpu, apicid, c->initial_apicid); + cpu, apicid, c->topo.initial_apicid); } BUG_ON(topology_update_package_map(c->phys_proc_id, cpu)); BUG_ON(topology_update_die_map(c->cpu_die_id, cpu)); @@ -1815,7 +1815,7 @@ static void identify_cpu(struct cpuinfo_ apply_forced_caps(c); #ifdef CONFIG_X86_64 - c->apicid = apic->phys_pkg_id(c->initial_apicid, 0); + c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); #endif /* --- a/arch/x86/kernel/cpu/hygon.c +++ b/arch/x86/kernel/cpu/hygon.c @@ -88,7 +88,7 @@ static void hygon_get_topology(struct cp c->x86_coreid_bits = get_count_order(c->x86_max_cores); /* Socket ID is ApicId[6] for these processors. */ - c->phys_proc_id = c->apicid >> APICID_SOCKET_ID_BIT; + c->phys_proc_id = c->topo.apicid >> APICID_SOCKET_ID_BIT; cacheinfo_hygon_init_llc_id(c, cpu); } else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) { @@ -116,9 +116,9 @@ static void hygon_detect_cmp(struct cpui bits = c->x86_coreid_bits; /* Low order bits define the core id (index of core in socket) */ - c->cpu_core_id = c->initial_apicid & ((1 << bits)-1); + c->cpu_core_id = c->topo.initial_apicid & ((1 << bits)-1); /* Convert the initial APIC ID into the socket ID */ - c->phys_proc_id = c->initial_apicid >> bits; + c->phys_proc_id = c->topo.initial_apicid >> bits; /* use socket ID also for last level cache */ per_cpu(cpu_llc_id, cpu) = c->cpu_die_id = c->phys_proc_id; } @@ -128,7 +128,7 @@ static void srat_detect_node(struct cpui #ifdef CONFIG_NUMA int cpu = smp_processor_id(); int node; - unsigned int apicid = c->apicid; + unsigned int apicid = c->topo.apicid; node = numa_cpu_node(cpu); if (node == NUMA_NO_NODE) @@ -161,7 +161,7 @@ static void srat_detect_node(struct cpui * through CPU mapping may alter the outcome, directly * access __apicid_to_node[]. */ - int ht_nodeid = c->initial_apicid; + int ht_nodeid = c->topo.initial_apicid; if (__apicid_to_node[ht_nodeid] != NUMA_NO_NODE) node = __apicid_to_node[ht_nodeid]; @@ -301,7 +301,7 @@ static void init_hygon(struct cpuinfo_x8 set_cpu_cap(c, X86_FEATURE_REP_GOOD); /* get apicid instead of initial apic id from cpuid */ - c->apicid = read_apic_id(); + c->topo.apicid = read_apic_id(); /* * XXX someone from Hygon needs to confirm this DTRT --- a/arch/x86/kernel/cpu/mce/apei.c +++ b/arch/x86/kernel/cpu/mce/apei.c @@ -103,7 +103,7 @@ int apei_smca_report_x86_error(struct cp m.socketid = -1; for_each_possible_cpu(cpu) { - if (cpu_data(cpu).initial_apicid == lapic_id) { + if (cpu_data(cpu).topo.initial_apicid == lapic_id) { m.extcpu = cpu; m.socketid = cpu_data(m.extcpu).phys_proc_id; break; --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -124,7 +124,7 @@ void mce_setup(struct mce *m) m->cpuvendor = boot_cpu_data.x86_vendor; m->cpuid = cpuid_eax(1); m->socketid = cpu_data(m->extcpu).phys_proc_id; - m->apicid = cpu_data(m->extcpu).initial_apicid; + m->apicid = cpu_data(m->extcpu).topo.initial_apicid; m->mcgcap = __rdmsr(MSR_IA32_MCG_CAP); m->ppin = cpu_data(m->extcpu).ppin; m->microcode = boot_cpu_data.microcode; --- a/arch/x86/kernel/cpu/proc.c +++ b/arch/x86/kernel/cpu/proc.c @@ -23,8 +23,8 @@ static void show_cpuinfo_core(struct seq cpumask_weight(topology_core_cpumask(cpu))); seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id); seq_printf(m, "cpu cores\t: %d\n", c->booted_cores); - seq_printf(m, "apicid\t\t: %d\n", c->apicid); - seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid); + seq_printf(m, "apicid\t\t: %d\n", c->topo.apicid); + seq_printf(m, "initial apicid\t: %d\n", c->topo.initial_apicid); #endif } --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -78,7 +78,7 @@ int detect_extended_topology_early(struc /* * initial apic id, which also represents 32-bit extended x2apic id. */ - c->initial_apicid = edx; + c->topo.initial_apicid = edx; smp_num_siblings = max_t(int, smp_num_siblings, LEVEL_MAX_SIBLINGS(ebx)); #endif return 0; @@ -108,7 +108,7 @@ int detect_extended_topology(struct cpui * Populate HT related information from sub-leaf level 0. */ cpuid_count(leaf, SMT_LEVEL, &eax, &ebx, &ecx, &edx); - c->initial_apicid = edx; + c->topo.initial_apicid = edx; core_level_siblings = LEVEL_MAX_SIBLINGS(ebx); smp_num_siblings = max_t(int, smp_num_siblings, LEVEL_MAX_SIBLINGS(ebx)); core_plus_mask_width = ht_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); @@ -146,20 +146,20 @@ int detect_extended_topology(struct cpui die_select_mask = (~(-1 << die_plus_mask_width)) >> core_plus_mask_width; - c->cpu_core_id = apic->phys_pkg_id(c->initial_apicid, + c->cpu_core_id = apic->phys_pkg_id(c->topo.initial_apicid, ht_mask_width) & core_select_mask; if (die_level_present) { - c->cpu_die_id = apic->phys_pkg_id(c->initial_apicid, + c->cpu_die_id = apic->phys_pkg_id(c->topo.initial_apicid, core_plus_mask_width) & die_select_mask; } - c->phys_proc_id = apic->phys_pkg_id(c->initial_apicid, + c->phys_proc_id = apic->phys_pkg_id(c->topo.initial_apicid, pkg_mask_width); /* * Reinit the apicid, now that we have extended initial_apicid. */ - c->apicid = apic->phys_pkg_id(c->initial_apicid, 0); + c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); c->x86_max_cores = (core_level_siblings / smp_num_siblings); __max_die_per_package = (die_level_siblings / core_level_siblings); --- a/arch/x86/xen/apic.c +++ b/arch/x86/xen/apic.c @@ -118,7 +118,7 @@ static int xen_phys_pkg_id(int initial_a static int xen_cpu_present_to_apicid(int cpu) { if (cpu_present(cpu)) - return cpu_data(cpu).apicid; + return cpu_data(cpu).topo.apicid; else return BAD_APICID; } --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -2255,7 +2255,7 @@ static int kfd_cpumask_to_apic_id(const if (first_cpu_of_numa_node >= nr_cpu_ids) return -1; #ifdef CONFIG_X86_64 - return cpu_data(first_cpu_of_numa_node).apicid; + return cpu_data(first_cpu_of_numa_node).topo.apicid; #else return first_cpu_of_numa_node; #endif --- a/drivers/virt/acrn/hsm.c +++ b/drivers/virt/acrn/hsm.c @@ -447,7 +447,7 @@ static ssize_t remove_cpu_store(struct d if (cpu_online(cpu)) remove_cpu(cpu); - lapicid = cpu_data(cpu).apicid; + lapicid = cpu_data(cpu).topo.apicid; dev_dbg(dev, "Try to remove cpu %lld with lapicid %lld\n", cpu, lapicid); ret = hcall_sos_remove_cpu(lapicid); if (ret < 0) {

[v2,01/38] x86/cpu: Encapsulate topology information in cpuinfo_x86

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