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powerpc/mm/64s: Add _PAGE_KERNEL_ROX 

In the past we had a fallback definition for _PAGE_KERNEL_ROX, but we
removed that in commit d82fd29c5a ("powerpc/mm: Distribute platform
specific PAGE and PMD flags and definitions") and added definitions
for each MMU family.

However we missed adding a definition for 64s, which was not really a
bug because it's currently not used.

But we'd like to use PAGE_KERNEL_ROX in a future patch so add a
definition now.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210331003845.216246-1-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2021-03-31 11:38:40 +11:00
parent 29e3ea8cbd
commit 56bec2f9d4
1 changed files with 1 additions and 0 deletions
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1
arch/powerpc/include/asm/book3s/64/pgtable.h
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@ -116,6 +116,7 @@
*/
#define _PAGE_KERNEL_RW (_PAGE_PRIVILEGED | _PAGE_RW | _PAGE_DIRTY)
#define _PAGE_KERNEL_RO (_PAGE_PRIVILEGED | _PAGE_READ)
#define _PAGE_KERNEL_ROX (_PAGE_PRIVILEGED | _PAGE_READ | _PAGE_EXEC)
#define _PAGE_KERNEL_RWX (_PAGE_PRIVILEGED | _PAGE_DIRTY | \
_PAGE_RW | _PAGE_EXEC)
/*