x86/cpu: Use common topology code for Intel

Intel CPUs use either topology leaf 0xb/0x1f evaluation or the legacy
SMP/HT evaluation based on CPUID leaf 0x1/0x4.

Move it over to the consolidated topology code and remove the random
topology hacks which are sprinkled into the Intel and the common code.

No functional change intended.

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 <mhklinux@outlook.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Wang Wendy <wendy.wang@intel.com>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://lore.kernel.org/r/20240212153624.893644349@linutronix.de

1 files changed, 0 insertions, 65 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 5d7911f6f3a9..f83dd86802ac 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -793,19 +793,6 @@ static void get_model_name(struct cpuinfo_x86 *c)
 	*(s + 1) = '\0';
 }
 
-void detect_num_cpu_cores(struct cpuinfo_x86 *c)
-{
-	unsigned int eax, ebx, ecx, edx;
-
-	c->x86_max_cores = 1;
-	if (!IS_ENABLED(CONFIG_SMP) || c->cpuid_level < 4)
-		return;
-
-	cpuid_count(4, 0, &eax, &ebx, &ecx, &edx);
-	if (eax & 0x1f)
-		c->x86_max_cores = (eax >> 26) + 1;
-}
-
 void cpu_detect_cache_sizes(struct cpuinfo_x86 *c)
 {
 	unsigned int n, dummy, ebx, ecx, edx, l2size;
@@ -867,54 +854,6 @@ static void cpu_detect_tlb(struct cpuinfo_x86 *c)
 		tlb_lld_4m[ENTRIES], tlb_lld_1g[ENTRIES]);
 }
 
-int detect_ht_early(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
-	u32 eax, ebx, ecx, edx;
-
-	if (!cpu_has(c, X86_FEATURE_HT))
-		return -1;
-
-	if (cpu_has(c, X86_FEATURE_CMP_LEGACY))
-		return -1;
-
-	if (cpu_has(c, X86_FEATURE_XTOPOLOGY))
-		return -1;
-
-	cpuid(1, &eax, &ebx, &ecx, &edx);
-
-	smp_num_siblings = (ebx & 0xff0000) >> 16;
-	if (smp_num_siblings == 1)
-		pr_info_once("CPU0: Hyper-Threading is disabled\n");
-#endif
-	return 0;
-}
-
-void detect_ht(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
-	int index_msb, core_bits;
-
-	if (topo_is_converted(c))
-		return;
-
-	if (detect_ht_early(c) < 0)
-		return;
-
-	index_msb = get_count_order(smp_num_siblings);
-	c->topo.pkg_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb);
-
-	smp_num_siblings = smp_num_siblings / c->x86_max_cores;
-
-	index_msb = get_count_order(smp_num_siblings);
-
-	core_bits = get_count_order(c->x86_max_cores);
-
-	c->topo.core_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb) &
-		((1 << core_bits) - 1);
-#endif
-}
-
 static void get_cpu_vendor(struct cpuinfo_x86 *c)
 {
 	char *v = c->x86_vendor_id;
@@ -1899,10 +1838,6 @@ static void identify_cpu(struct cpuinfo_x86 *c)
 				c->x86, c->x86_model);
 	}
 
-#ifdef CONFIG_X86_64
-	detect_ht(c);
-#endif
-
 	x86_init_rdrand(c);
 	setup_pku(c);
 	setup_cet(c);