Commit ff61d185f4e7 ("mm: convert p[te|md]_mknonnuma and remaining
page table manipulations") removed a check in
mm/pgtable-generic.c:pmdp_invalidate(), which leaves the
pmd_mknotpresent macro the only user of the entry variable.
For ARM/LPAE we use a constant 0 without referencing the argument to
mark this condition, so the entry variable is no longer used here:
mm/pgtable-generic.c: In function 'pmdp_invalidate':
mm/pgtable-generic.c:195:8: warning: unused variable 'entry' [-Wunused-variable]
pmd_t entry = *pmdp;
^
Replace the ARM macro implementation with a static inline function to
get rid of this warning.
Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
---
arch/arm/include/asm/pgtable-3level.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm/include/asm/pgtable-3level.h
b/arch/arm/include/asm/pgtable-3level.h
index 370684d..0e51fbe 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -259,7 +259,10 @@ PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
#define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
/* represent a notpresent pmd by zero, this is used by pmdp_invalidate */
-#define pmd_mknotpresent(pmd) (__pmd(0))
+static inline pmd_t pmd_mknotpresent(pmd_t pmd)
+{
+ return 0;
+}
static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
{
--
1.7.9.5
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