arm64: mm: don't call page table ctors for init_mm

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init_mm doesn't require page table lock to be initialized at
any level. Add a separate page table allocator for it, and the
new one skips page table ctors.

The ctors allocate memory when ALLOC_SPLIT_PTLOCKS is set. Not
calling them avoids memory leak in case we call pte_free_kernel()
on init_mm.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Yu Zhao 2019-03-11 18:57:47 -06:00 • committed by Will Deacon

parent 90292aca98

commit 369aaab845

1 changed files with 13 additions and 2 deletions

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arch/arm64/mm/mmu.c

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