diff options
| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-12-02 19:07:07 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-01-13 14:15:05 +0100 |
| commit | b265854060525ca2cef74e40a49494bbb52700e6 (patch) | |
| tree | bf2903c532b760e1dabee6edbce0989faee47b23 /arch/s390/include/asm/pgtable.h | |
| parent | bf2b4af2ed23b9548ea7f24613fd905f56ec7910 (diff) | |
s390/pgtable: add REGION3_KERNEL_EXEC protection
Similar to existing PAGE_KERNEL_EXEC and SEGMENT_KERNEL_EXEC
memory protection add REGION3_KERNEL_EXEC attribute that
could be set on PUD pgtable entries.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index b26cbf1c533c..0170f95f3b91 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -477,6 +477,12 @@ static inline int is_module_addr(void *addr) _REGION3_ENTRY_YOUNG | \ _REGION_ENTRY_PROTECT | \ _REGION_ENTRY_NOEXEC) +#define REGION3_KERNEL_EXEC __pgprot(_REGION_ENTRY_TYPE_R3 | \ + _REGION3_ENTRY_LARGE | \ + _REGION3_ENTRY_READ | \ + _REGION3_ENTRY_WRITE | \ + _REGION3_ENTRY_YOUNG | \ + _REGION3_ENTRY_DIRTY) static inline bool mm_p4d_folded(struct mm_struct *mm) { |