[patch V2 34/38] x86/cpu/amd; Invoke detect_extended_topology_early() on boot CPU

Thomas Gleixner tglx at linutronix.de
Thu May 4 12:02:53 PDT 2023


From: Thomas Gleixner <tglx at linutronix.de>

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

Signed-off-by: Thomas Gleixner <tglx at 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;
 }




More information about the linux-riscv mailing list