diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2024-09-24 15:32:20 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-09-24 15:32:20 +0800 |
| commit | e86935f705fa732d8c7c3ecf0c50ea461ffab76f (patch) | |
| tree | 1d8cb6c192f3f525e1236aeda0e993f44020948e /arch/loongarch/include | |
| parent | 34e3c4500cdc06094b37a41b622598098308ba8f (diff) | |
LoongArch: Add ARCH_HAS_SET_MEMORY support
Add set_memory_ro/rw/x/nx architecture hooks to change the page
attribution.
Use own set_memory.h rather than generic set_memory.h (i.e.
include/asm-generic/set_memory.h), because we want to add other function
prototypes here.
Note: We can only set attributes for KVRANGE/XKVRANGE kernel addresses.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include')
| -rw-r--r-- | arch/loongarch/include/asm/set_memory.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/set_memory.h b/arch/loongarch/include/asm/set_memory.h new file mode 100644 index 000000000000..64c7f942e8ec --- /dev/null +++ b/arch/loongarch/include/asm/set_memory.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2024 Loongson Technology Corporation Limited + */ + +#ifndef _ASM_LOONGARCH_SET_MEMORY_H +#define _ASM_LOONGARCH_SET_MEMORY_H + +/* + * Functions to change memory attributes. + */ +int set_memory_x(unsigned long addr, int numpages); +int set_memory_nx(unsigned long addr, int numpages); +int set_memory_ro(unsigned long addr, int numpages); +int set_memory_rw(unsigned long addr, int numpages); + +#endif /* _ASM_LOONGARCH_SET_MEMORY_H */ |