Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3e76ee99 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

s390/mm: always use PAGE_KERNEL when mapping pages 



Always use PAGE_KERNEL when re-enabling pages within the kernel
mapping due to debug pagealloc. Without using this pgprot value
pte_mkwrite() and pte_wrprotect() won't work on such mappings after an
unmap -> map cycle anymore.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5aa29975

arch/s390/mm/pageattr.c

+1 −1
Original line number Diff line number Diff line
@@ -138,7 +138,7 @@ void __kernel_map_pages(struct page *page, int numpages, int enable) 
		nr = min(numpages - i, nr);

		if (enable) {

			for (j = 0; j < nr; j++) {

				pte_val(*pte) = __pa(address);

				pte_val(*pte) = address | pgprot_val(PAGE_KERNEL);

				address += PAGE_SIZE;

				pte++;

			}