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x86/apic: Mop up early_per_cpu() abuse

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UV X2APIC uses the per CPU variable from:

  native_smp_prepare_cpus()
    uv_system_init()
      uv_system_init_hub()

which is long after the per CPU areas have been set up.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)
This commit is contained in:
Thomas Gleixner
2023-08-08 15:03:54 -07:00
committed by Dave Hansen
parent ec9fb3c5f4
commit e3243ed014
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/apic/x2apic_uv_x.c
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@@ -1843,7 +1843,7 @@ static void __init uv_system_init_hub(void)
/* Initialize per CPU info: */
for_each_possible_cpu(cpu) {
int apicid = early_per_cpu(x86_cpu_to_apicid, cpu);
int apicid = per_cpu(x86_cpu_to_apicid, cpu);
unsigned short bid;
unsigned short pnode;