diff options
| author | Yury Norov <ynorov@caviumnetworks.com> | 2017-08-20 13:20:47 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-08-22 18:13:04 +0100 |
| commit | 5ce93ab624cee4ed68086c946bd6d18b9b3f64aa (patch) | |
| tree | 189c30a3a1e8ea8483aa8cc22a478ad0a6093e05 /arch/arm64/include/asm/elf.h | |
| parent | 828f193dd62a40ade5ea8b24cb8b0a22c30df673 (diff) | |
arm64: introduce separated bits for mm_context_t flags
Currently mm->context.flags field uses thread_info flags which is not
the best idea for many reasons. For example, mm_context_t doesn't need
most of thread_info flags. And it would be difficult to add new mm-related
flag if needed because it may easily interfere with TIF ones.
To deal with it, the new MMCF_AARCH32 flag is introduced for
mm_context_t->flags, where MMCF prefix stands for mm_context_t flags.
Also, mm_context_t flag doesn't require atomicity and ordering of the
access, so using set/clear_bit() is replaced with simple masks.
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/elf.h')
| -rw-r--r-- | arch/arm64/include/asm/elf.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index acae781f7359..f4e33f8356ca 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -139,7 +139,7 @@ typedef struct user_fpsimd_state elf_fpregset_t; #define SET_PERSONALITY(ex) \ ({ \ - clear_bit(TIF_32BIT, ¤t->mm->context.flags); \ + current->mm->context.flags = 0; \ clear_thread_flag(TIF_32BIT); \ current->personality &= ~READ_IMPLIES_EXEC; \ }) @@ -195,7 +195,7 @@ typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; */ #define COMPAT_SET_PERSONALITY(ex) \ ({ \ - set_bit(TIF_32BIT, ¤t->mm->context.flags); \ + current->mm->context.flags = MMCF_AARCH32; \ set_thread_flag(TIF_32BIT); \ }) #define COMPAT_ARCH_DLINFO |