diff options
| author | Sumanth Korikkar <sumanthk@linux.ibm.com> | 2025-08-04 11:57:03 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2025-08-05 14:23:20 +0200 |
| commit | daa8af80d283ee9a7d42dd6f164a65036665b9d4 (patch) | |
| tree | 965eb84d623fb4e9266cded984b41192e4bc7d35 | |
| parent | 10dd5a0009898ba35eafeb6087e5c83b84742ff1 (diff) | |
s390/mm: Allocate page table with PAGE_SIZE granularity
Make vmem_pte_alloc() consistent by always allocating page table of
PAGE_SIZE granularity, regardless of whether page_table_alloc() (with
slab) or memblock_alloc() is used. This ensures page table can be fully
freed when the corresponding page table entries are removed.
Fixes: d08d4e7cd6bf ("s390/mm: use full 4KB page for 2KB PTE")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
| -rw-r--r-- | arch/s390/mm/vmem.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 448dd6ed1069..f48ef361bc83 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -64,13 +64,12 @@ void *vmem_crst_alloc(unsigned long val) pte_t __ref *vmem_pte_alloc(void) { - unsigned long size = PTRS_PER_PTE * sizeof(pte_t); pte_t *pte; if (slab_is_available()) - pte = (pte_t *) page_table_alloc(&init_mm); + pte = (pte_t *)page_table_alloc(&init_mm); else - pte = (pte_t *) memblock_alloc(size, size); + pte = (pte_t *)memblock_alloc(PAGE_SIZE, PAGE_SIZE); if (!pte) return NULL; memset64((u64 *)pte, _PAGE_INVALID, PTRS_PER_PTE); |