[RFC PATCH 13/34] arm64: mm: define pud_set_huge() when __PGTABLE_PMD_FOLDED not defined

[Yeoreum Yun]

We want to rework how set_pXd() behaves for generic compile-time folded
page tables by disallowing its use and triggering a compile-time error
when it is used improperly, ensuring that the actual first-level set_pXd()
function is used instead.

As using set_pud() is invalid when __PGTABLE_PMD_FOLDED,
pud_set_huge() is also invalid. Therefore, define it when
__PGTABLE_PMD_FOLDED is not defined.

There should be no functional change.

Signed-off-by: Yeoreum Yun <yeoreum.yun at arm.com>
---
 arch/arm64/mm/mmu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index f2be501468ce5..194b62c528de9 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1807,6 +1807,7 @@ void vmemmap_free(unsigned long start, unsigned long end,
 }
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
+#ifndef __PAGETABLE_PMD_FOLDED
 int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot)
 {
 	pud_t new_pud = pfn_pud(__phys_to_pfn(phys), mk_pud_sect_prot(prot));
@@ -1820,6 +1821,7 @@ int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot)
 	set_pud(pudp, new_pud);
 	return 1;
 }
+#endif
 
 int pmd_set_huge(pmd_t *pmdp, phys_addr_t phys, pgprot_t prot)
 {
-- 
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}