diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2023-08-14 10:18:29 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-10-10 14:38:17 +0200 |
| commit | b9655e702dc5d856e5e05ae414b71708ca98b30c (patch) | |
| tree | 2af444a73974e8a2f4600dc0feecd321d7e512ca /arch/x86/kernel/cpu/common.c | |
| parent | 965e05ff8af98c44f9937366715c512000373164 (diff) | |
x86/cpu: Encapsulate topology information in cpuinfo_x86
The topology related information is randomly scattered across cpuinfo_x86.
Create a new structure cpuinfo_topo and move in a first step initial_apicid
and apicid into it.
Aside of being better readable this is in preparation for replacing the
horribly fragile CPU topology evaluation code further down the road.
Consolidate APIC ID fields to u32 as that represents the hardware type.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230814085112.269787744@linutronix.de
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 382d4e6b848d..c39e88ed385d 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -914,7 +914,7 @@ 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; @@ -922,7 +922,7 @@ 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 } @@ -1761,15 +1761,15 @@ static void generic_identify(struct cpuinfo_x86 *c) 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 */ @@ -1803,9 +1803,9 @@ static void validate_apic_and_package_id(struct cpuinfo_x86 *c) 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)); @@ -1855,7 +1855,7 @@ static void identify_cpu(struct cpuinfo_x86 *c) 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 /* |