From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 2 May 2017 03:48:33 +0000 (-0700)
Subject: Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git... 
X-Git-Tag: v4.13~866
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=3dee9fb2a4ced89a13a4d4b72b0b7360b701e566;p=mirror_ubuntu-bionic-kernel.git

Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull RAS updates from Ingo Molnar:
 "The main changes in this cycle were:

   - add the 'Corrected Errors Collector' kernel feature which collect
     and monitor correctable errors statistics and will preemptively
     (soft-)offline physical pages that have a suspiciously high error
     count.

   - handle MCE errors during kexec() more gracefully

   - factor out and deprecate the /dev/mcelog driver

   - ... plus misc fixes and cleanpus"

* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Check MCi_STATUS[MISCV] for usable addr on Intel only
  ACPI/APEI: Use setup_deferrable_timer()
  x86/mce: Update notifier priority check
  x86/mce: Enable PPIN for Knights Landing/Mill
  x86/mce: Do not register notifiers with invalid prio
  x86/mce: Factor out and deprecate the /dev/mcelog driver
  RAS: Add a Corrected Errors Collector
  x86/mce: Rename mce_log to mce_log_buffer
  x86/mce: Rename mce_log()'s argument
  x86/mce: Init some CPU features early
  x86/mce: Handle broadcasted MCE gracefully with kexec
---

3dee9fb2a4ced89a13a4d4b72b0b7360b701e566
diff --cc arch/x86/kernel/cpu/mcheck/mce.c
index af44ebeb593f,4a29f7481761..5abd4bf73d6e
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@@ -216,11 -157,12 +157,12 @@@ static atomic_t num_notifiers
  
  void mce_register_decode_chain(struct notifier_block *nb)
  {
- 	atomic_inc(&num_notifiers);
+ 	if (WARN_ON(nb->priority > MCE_PRIO_MCELOG && nb->priority < MCE_PRIO_EDAC))
+ 		return;
  
- 	WARN_ON(nb->priority > MCE_PRIO_LOWEST && nb->priority < MCE_PRIO_EDAC);
+ 	atomic_inc(&num_notifiers);
  
 -	atomic_notifier_chain_register(&x86_mce_decoder_chain, nb);
 +	blocking_notifier_chain_register(&x86_mce_decoder_chain, nb);
  }
  EXPORT_SYMBOL_GPL(mce_register_decode_chain);