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powerpc/mm: update radix__pte_update to not do full mm tlb flush

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When we are updating a pte, we just need to flush the tlb mapping
that pte. Right now we do a full mm flush because we don't track page
size. Now that we have page size details in pte use that to do the
optimized flush

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-11-28 11:47:03 +05:30 committed by Michael Ellerman
parent b3603e174f
commit e58d1cf243
1 changed files with 1 additions and 7 deletions
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8
arch/powerpc/include/asm/book3s/64/radix.h
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@ -145,13 +145,7 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm,
* new value of pte
*/
new_pte = (old_pte | set) & ~clr;
/*
* For now let's do heavy pid flush
* radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize);
*/
radix__flush_tlb_mm(mm);
radix__flush_tlb_pte_p9_dd1(old_pte, mm, addr);
__radix_pte_update(ptep, 0, new_pte);
} else
old_pte = __radix_pte_update(ptep, clr, set);