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x86/cpu: Use common topology code for Centaur and Zhaoxin

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Centaur and Zhaoxin CPUs use only the legacy SMP detection. Remove the
invocations from their 32bit path and exclude them from the 64-bit call
path.

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/20240212153624.706794189@linutronix.de
This commit is contained in:
Thomas Gleixner 2024-02-13 22:04:04 +01:00
parent bda74aae20
commit 598e719c40
3 changed files with 8 additions and 11 deletions
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4
arch/x86/kernel/cpu/centaur.c
View File

@ -128,10 +128,6 @@ static void init_centaur(struct cpuinfo_x86 *c)
#endif
early_init_centaur(c);
init_intel_cacheinfo(c);
detect_num_cpu_cores(c);
#ifdef CONFIG_X86_32
detect_ht(c);
#endif
if (c->cpuid_level > 9) {
unsigned int eax = cpuid_eax(10);

11
arch/x86/kernel/cpu/topology_common.c
View File

@ -42,7 +42,7 @@ static unsigned int __maybe_unused parse_num_cores_legacy(struct cpuinfo_x86 *c)
return eax.ncores + 1;
}
static void __maybe_unused parse_legacy(struct topo_scan *tscan)
static void parse_legacy(struct topo_scan *tscan)
{
unsigned int cores, core_shift, smt_shift = 0;
struct cpuinfo_x86 *c = tscan->c;
@ -71,10 +71,8 @@ bool topo_is_converted(struct cpuinfo_x86 *c)
/* Temporary until everything is converted over. */
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_AMD:
case X86_VENDOR_CENTAUR:
case X86_VENDOR_INTEL:
case X86_VENDOR_HYGON:
case X86_VENDOR_ZHAOXIN:
return false;
default:
/* Let all UP systems use the below */
@ -132,6 +130,13 @@ static void parse_topology(struct topo_scan *tscan, bool early)
return;
tscan->ebx1_nproc_shift = get_count_order(ebx.nproc);
switch (c->x86_vendor) {
case X86_VENDOR_CENTAUR:
case X86_VENDOR_ZHAOXIN:
parse_legacy(tscan);
break;
}
}
static void topo_set_ids(struct topo_scan *tscan)

4
arch/x86/kernel/cpu/zhaoxin.c
View File

@ -71,10 +71,6 @@ static void init_zhaoxin(struct cpuinfo_x86 *c)
{
early_init_zhaoxin(c);
init_intel_cacheinfo(c);
detect_num_cpu_cores(c);
#ifdef CONFIG_X86_32
detect_ht(c);
#endif
if (c->cpuid_level > 9) {
unsigned int eax = cpuid_eax(10);