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Commit e4c031b4 authored by Jan Glauber's avatar Jan Glauber Committed by Martin Schwidefsky
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[S390] fix page table walk for changing page attributes 



The page table walk for changing page attributes used the wrong
address for pgd/pud/pmd lookups if the range was bigger than
a pmd entry. Fix the lookup by using the correct address.

Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent c708c57e

arch/s390/mm/pageattr.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -24,12 +24,13 @@ static void change_page_attr(unsigned long addr, int numpages, 
			WARN_ON_ONCE(1);

			WARN_ON_ONCE(1);

			continue;

			continue;

		}

		}

		ptep = pte_offset_kernel(pmdp, addr + i * PAGE_SIZE);

		ptep = pte_offset_kernel(pmdp, addr);





		pte = *ptep;

		pte = *ptep;

		pte = set(pte);

		pte = set(pte);

		ptep_invalidate(&init_mm, addr + i * PAGE_SIZE, ptep);

		ptep_invalidate(&init_mm, addr, ptep);

		*ptep = pte;

		*ptep = pte;

		addr += PAGE_SIZE;

	}

	}

}

}