[RFC PATCH 04/34] LoongArch: mm: define pud_leaf() only when PUD exists

Yeoreum Yun <[email protected]> Mon, 13 Jul 2026 14:55:43 +0100
Newsgroups org.kernel.vger.linux-csky,dev.linux.lists.loongarch,org.infradead.lists.kvm-riscv,org.infradead.lists.linux-riscv,org.kernel.vger.linux-arch,org.kernel.vger.linux-kernel,org.kernel.vger.linux-m68k,org.kernel.vger.linux-mips,org.kernel.vger.linux-openrisc,org.kvack.linux-mm
Message-ID <[email protected]>
From: "David Hildenbrand (Arm)" <[email protected]>

In include/asm-generic/pgtable-nopmd.h, we do have a hard-coded
pud_leaf()=false inline function, but we miss the "define pud_leaf
pud_leaf" part.

To prepare for fixing that, define pud_leaf() only if we don't have
__PAGETABLE_PMD_FOLDED.

Signed-off-by: David Hildenbrand (Arm) <[email protected]>
Signed-off-by: Yeoreum Yun <[email protected]>
---
 arch/loongarch/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h
index 1952e34bc8ee0..434e5b4834664 100644
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -636,7 +636,9 @@ static inline long pmd_protnone(pmd_t pmd)
 #endif /* CONFIG_ARCH_HAS_PTE_PROTNONE */
 
 #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
 
 /*
  * We provide our own get_unmapped area to cope with the virtual aliasing
-- 
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}