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powerpc/mm: update radix__ptep_set_access_flag 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 the 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 11:47:02 +05:30
committed by Michael Ellerman
parent 6d3a0379eb
commit b3603e174f
7 changed files with 15 additions and 15 deletions
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3
arch/powerpc/include/asm/nohash/64/pgtable.h
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@@ -289,7 +289,8 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
* function doesn't need to flush the hash entry
*/
static inline void __ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
pte_t *ptep, pte_t entry,
unsigned long address)
{
unsigned long bits = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);