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Subject[PATCH v6 04/11] powerpc/mce_power: Use functions to track lockless pgtbl walks
Date
Applies the new functions used for tracking lockless pgtable walks on
addr_to_pfn().

local_irq_{save,restore} is already inside {begin,end}_lockless_pgtbl_walk,
so there is no need to repeat it here.

Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
---
arch/powerpc/kernel/mce_power.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 1cbf7f1a4e3d..a9e38ef4e437 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -29,7 +29,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
{
pte_t *ptep;
unsigned int shift;
- unsigned long pfn, flags;
+ unsigned long pfn, irq_mask;
struct mm_struct *mm;

if (user_mode(regs))
@@ -37,7 +37,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
else
mm = &init_mm;

- local_irq_save(flags);
+ irq_mask = begin_lockless_pgtbl_walk();
ptep = __find_linux_pte(mm->pgd, addr, NULL, &shift);

if (!ptep || pte_special(*ptep)) {
@@ -53,7 +53,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
}

out:
- local_irq_restore(flags);
+ end_lockless_pgtbl_walk(irq_mask);
return pfn;
}

--
2.24.1
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