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Subject[PATCH] powerpc/mm/32s: only use MMU to mark initmem NX if STRICT_KERNEL_RWX
Date
If STRICT_KERNEL_RWX is disabled, never use the MMU to mark initmen
nonexecutable.

Also move a misplaced paren that makes the condition always true.

Fixes: 63b2bc619565 ("powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX")
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
---
arch/powerpc/mm/pgtable_32.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index d53188dee18f..3935dc263d65 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -360,9 +360,11 @@ void mark_initmem_nx(void)
unsigned long numpages = PFN_UP((unsigned long)_einittext) -
PFN_DOWN((unsigned long)_sinittext);

- if (v_block_mapped((unsigned long)_stext) + 1)
+#ifdef CONFIG_STRICT_KERNEL_RWX
+ if (v_block_mapped((unsigned long)_stext + 1))
mmu_mark_initmem_nx();
else
+#endif
change_page_attr(page, numpages, PAGE_KERNEL);
}

--
2.22.0
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."

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