Re: [PATCH v4 2/2] powerpc/mce: Remove per cpu variables from MCE handlers

Access to per-cpu variables requires translation to be enabled on
pseries machine running in hash mmu mode, Since part of MCE handler
runs in realmode and part of MCE handling code is shared between ppc
architectures pseries and powernv, it becomes difficult to manage
these variables differently on different architectures, So have
these variables in paca instead of having them as per-cpu variables
to avoid complications.

Signed-off-by: Ganesh Goudar <redacted>
---
v2: Dynamically allocate memory for machine check event info

v3: Remove check for hash mmu lpar, use memblock_alloc_try_nid
     to allocate memory.

v4: Spliting the patch into two.
---
  arch/powerpc/include/asm/mce.h     | 18 +++++++
  arch/powerpc/include/asm/paca.h    |  4 ++
  arch/powerpc/kernel/mce.c          | 79 ++++++++++++++++++------------
  arch/powerpc/kernel/setup-common.c |  2 +-
  4 files changed, 70 insertions(+), 33 deletions(-)

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 71f38e9248be..17dc451f0e45 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c

@@ -916,7 +916,6 @@ void __init setup_arch(char **cmdline_p)
  	/* On BookE, setup per-core TLB data structures. */
  	setup_tlb_core_data();
  #endif
-

  	/* Print various info about the machine that has been gathered so far. */
  	print_system_info();
  

@@ -938,6 +937,7 @@ void __init setup_arch(char **cmdline_p)
  	exc_lvl_early_init();
  	emergency_stack_init();
  
+	mce_init();