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[RFC,v3,05/21] MIPS: mm: define pud_leaf() only when PUD exists

Message ID 20260902-dummy_ptxp3-v3-5-5d8f5b17c25c@arm.com
State New
Headers show
Series mm: change behavior of pXdp_get()/pXd_page() in compile-time folded pgtable | expand

Commit Message

Yeoreum Yun Sept. 2, 2026, 11:56 a.m. UTC 
From: "David Hildenbrand (Arm)" <david@kernel.org>

In include/asm-generic/pgtable-nopmd.h, pud_leaf() has hardcoded
to return false as inline function, but it misses the "define pud_leaf"
part.

To prepare for fixing that, define pud_leaf() only when
__PAGETABLE_PMD_FOLDED isn't defined.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
 arch/mips/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index fa7b935f947c..151f4d15bd12 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -745,8 +745,10 @@  static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 
 #ifdef _PAGE_HUGE
 #define pmd_leaf(pmd)	((pmd_val(pmd) & _PAGE_HUGE) != 0)
+#ifndef __PAGETABLE_PMD_FOLDED
 #define pud_leaf(pud)	((pud_val(pud) & _PAGE_HUGE) != 0)
 #endif
+#endif
 
 #define gup_fast_permitted(start, end)	(!cpu_has_dc_aliases)