With commit af2cf278ef4f we no longer free pud so that we
do not have synchronize all pgd on hotremove/vfree. But the
new 5 level page table code re-added that code f2a6a705 and
thus we now trigger a BUG_ON() l128 in sync_global_pgds()
This patch remove free_pud() like in af2cf278ef4f
Signed-off-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Logan Gunthorpe <logang@xxxxxxxxxxxx>
---
arch/x86/mm/init_64.c | 19 -------------------
1 file changed, 19 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index a8a9972..8cf7e99 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -772,24 +772,6 @@ static void __meminit free_pmd_table(pmd_t *pmd_start, pud_t *pud)
spin_unlock(&init_mm.page_table_lock);
}
-static void __meminit free_pud_table(pud_t *pud_start, p4d_t *p4d)
-{
- pud_t *pud;
- int i;
-
- for (i = 0; i < PTRS_PER_PUD; i++) {
- pud = pud_start + i;
- if (!pud_none(*pud))
- return;
- }
-
- /* free a pud talbe */
- free_pagetable(p4d_page(*p4d), 0);
- spin_lock(&init_mm.page_table_lock);
- p4d_clear(p4d);
- spin_unlock(&init_mm.page_table_lock);
-}
-
static void __meminit
remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end,
bool direct)
@@ -991,7 +973,6 @@ remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
pud_base = pud_offset(p4d, 0);
remove_pud_table(pud_base, addr, next, direct);
- free_pud_table(pud_base, p4d);
}
if (direct)
--
2.9.3
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