[patch 34/37] x86/cpu/amd; Invoke detect_extended_topology_early() on boot CPU

Thomas Gleixner
2023-04-14T23:48:33Z

The early detection stores the extended topology leaf number which is
required for parallel hotplug.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/cpu/amd.c | 2 ++
1 file changed, 2 insertions(+)

--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -692,6 +692,8 @@ static void early_init_amd(struct cpuinf
}
}

+ detect_extended_topology_early(c);
+
if (cpu_has(c, X86_FEATURE_TOPOEXT))
smp_num_siblings = ((cpuid_ebx(0x8000001e) >> 8) & 0xff) + 1;
}