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powerpc/mm/radix: Use different pte update sequence for different POWER9 revs

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POWER9 DD1 requires pte to be marked invalid (V=0) before updating
it with the new value. This makes this distinction for the different
revisions.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-08-24 15:03:38 +05:30 • committed by Michael Ellerman
parent 694c495192
commit c6d1a767b9
7 changed files with 71 additions and 22 deletions
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2
arch/powerpc/mm/pgtable.c
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@ -224,7 +224,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
if (changed) {
if (!is_vm_hugetlb_page(vma))
assert_pte_locked(vma->vm_mm, address);
__ptep_set_access_flags(ptep, entry);
__ptep_set_access_flags(vma->vm_mm, ptep, entry);
flush_tlb_page(vma, address);
}
return changed;