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[PATCH v2 11/22] arm64: Populate cpuinfo after notify_cpu_starting

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This patch delays populating the cpuinfo for a new (hotplugged)
CPU until the notifiers have executed. This will enable us to verify
if the new (hotplugged) CPU has all the capabilities which the system
already has. If it doesn't, we could prevent it from turning online and
also modifying the system wide feature register status.

Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
---
 arch/arm64/kernel/smp.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index cb3e0d8..6987de4 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -163,14 +163,14 @@ asmlinkage void secondary_start_kernel(void)
 		cpu_ops[cpu]->cpu_postboot();
 
 	/*
-	 * Log the CPU info before it is marked online and might get read.
+	 * Enable GIC and timers.
 	 */
-	cpuinfo_store_cpu();
+	notify_cpu_starting(cpu);
 
 	/*
-	 * Enable GIC and timers.
+	 * Log the CPU info before it is marked online and might get read.
 	 */
-	notify_cpu_starting(cpu);
+	cpuinfo_store_cpu();
 
 	smp_store_cpu_info(cpu);
 
-- 
1.7.9.5

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[PATCH v2 00/22] arm64: Consolidate CPU feature handling "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
  [PATCH v2 15/22] arm64: Move FP/ASIMD hwcap handling to common code "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
  [PATCH v2 05/22] arm64: Move /proc/cpuinfo handling code "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
  [PATCH v2 16/22] arm64/debug: Make use of the system wide safe value "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
    Re: [PATCH v2 16/22] arm64/debug: Make use of the system wide safe  value Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 13:20 +0200
      Re: [PATCH v2 16/22] arm64/debug: Make use of the system wide safe  value "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-10-08 14:00 +0200
        Re: [PATCH v2 16/22] arm64/debug: Make use of the system wide safe  value Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 17:10 +0200
          Re: [PATCH v2 16/22] arm64/debug: Make use of the system wide safe  value "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-10-08 18:00 +0200
  [PATCH v2 14/22] arm64: Cleanup HWCAP handling "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
    Re: [PATCH v2 14/22] arm64: Cleanup HWCAP handling Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-10-08 13:20 +0200
      Re: [PATCH v2 14/22] arm64: Cleanup HWCAP handling Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 15:10 +0200
        Re: [PATCH v2 14/22] arm64: Cleanup HWCAP handling Edward Nevill <edward.nevill@linaro.org> - 2015-10-08 17:00 +0200
    Re: [PATCH v2 14/22] arm64: Cleanup HWCAP handling Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 13:20 +0200
  [PATCH v2 18/22] arm64: Add helper to decode register from instruction "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
  [PATCH v2 02/22] arm64: Delay ELF HWCAP initialisation until all CPUs are up "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
  [PATCH v2 17/22] arm64/kvm: Make use of the system wide safe values "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
    Re: [PATCH v2 17/22] arm64/kvm: Make use of the system wide safe  values Christoffer Dall <christoffer.dall@linaro.org> - 2015-10-10 17:20 +0200
  [PATCH v2 11/22] arm64: Populate cpuinfo after notify_cpu_starting "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:10 +0200
    Re: [PATCH v2 11/22] arm64: Populate cpuinfo after  notify_cpu_starting Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 12:20 +0200
      Re: [PATCH v2 11/22] arm64: Populate cpuinfo after  notify_cpu_starting "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-10-08 12:50 +0200
        Re: [PATCH v2 11/22] arm64: Populate cpuinfo after  notify_cpu_starting "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-10-09 17:10 +0200
  [PATCH v2 01/22] arm64: Make the CPU information more clear "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-10-05 19:20 +0200

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