[RFC PATCH v6 24/26] mm/mmap: Add Shadow stack pages to memory accounting
STALE2717d
From: Yu-cheng Yu <hidden>
Date: 2018-11-19 21:54:37
Also in:
linux-arch, linux-doc, linux-mm, lkml
Subsystem:
memory management, memory mapping, the rest · Maintainers:
Andrew Morton, Liam R. Howlett, Lorenzo Stoakes, Linus Torvalds
Revision v6 of 25 in this series.
Revisions (25)
- v6 current
- v7 [diff vs current]
- v8 [diff vs current]
- v9 [diff vs current]
- v10 [diff vs current]
- v11 [diff vs current]
- v12 [diff vs current]
- v13 [diff vs current]
- v14 [diff vs current]
- v15 [diff vs current]
- v16 [diff vs current]
- v17 [diff vs current]
- v18 [diff vs current]
- v19 [diff vs current]
- v20 [diff vs current]
- v21 [diff vs current]
- v22 [diff vs current]
- v23 [diff vs current]
- v24 [diff vs current]
- v25 [diff vs current]
- v26 [diff vs current]
- v27 [diff vs current]
- v28 [diff vs current]
- v29 [diff vs current]
- v30 [diff vs current]
Add shadow stack pages to memory accounting. Signed-off-by: Yu-cheng Yu <redacted> --- mm/mmap.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/mm/mmap.c b/mm/mmap.c
index 30836512ca79..9560d69fa08c 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c@@ -1701,6 +1701,9 @@ static inline int accountable_mapping(struct file *file, vm_flags_t vm_flags) if (file && is_file_hugepages(file)) return 0; + if (arch_copy_pte_mapping(vm_flags)) + return 1; + return (vm_flags & (VM_NORESERVE | VM_SHARED | VM_WRITE)) == VM_WRITE; }
@@ -3319,6 +3322,8 @@ void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages) mm->stack_vm += npages; else if (is_data_mapping(flags)) mm->data_vm += npages; + else if (arch_copy_pte_mapping(flags)) + mm->data_vm += npages; } static vm_fault_t special_mapping_fault(struct vm_fault *vmf);
--
2.17.1