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powerpc/64s/radix: tlb do not flush on page size when fullmm

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When the mm is being torn down there will be a full PID flush so
there is no need to flush the TLB on page size changes.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2018-07-25 23:58:06 +10:00 committed by Michael Ellerman
parent d97e7f198b
commit 5a6099346c
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/include/asm/tlb.h
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@ -49,6 +49,9 @@ static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
unsigned int page_size)
{
if (tlb->fullmm)
return;
if (!tlb->page_size)
tlb->page_size = page_size;
else if (tlb->page_size != page_size) {