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powerpc/mce: Remove per cpu variables from MCE handlers

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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 <ganeshgr@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210128104143.70668-2-ganeshgr@linux.ibm.com
This commit is contained in:
Ganesh Goudar 2021-01-28 16:11:43 +05:30 • committed by Michael Ellerman
parent 17c5cf0fb9
commit 923b3cf00b
4 changed files with 71 additions and 32 deletions
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2
arch/powerpc/kernel/setup-common.c
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@ -64,6 +64,7 @@
#include <asm/mmu_context.h>
#include <asm/cpu_has_feature.h>
#include <asm/kasan.h>
#include <asm/mce.h>
#include "setup.h"
@ -938,6 +939,7 @@ void __init setup_arch(char **cmdline_p)
exc_lvl_early_init();
emergency_stack_init();
mce_init();
smp_release_cpus();
initmem_init();