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| author | Tong Tiangen <tongtiangen@huawei.com> | 2022-10-22 01:43:40 +0000 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2022-10-21 23:52:29 -0400 |
| commit | b203c67ebe752c8f2a2babf5e58d244c82680922 (patch) | |
| tree | ef2e931ce17801419dcef1d083779be3e23c4829 /arch/csky/include | |
| parent | 9abf2313adc1ca1b6180c508c25f22f9395cc780 (diff) | |
| download | linux-b203c67ebe752c8f2a2babf5e58d244c82680922.tar.gz linux-b203c67ebe752c8f2a2babf5e58d244c82680922.tar.bz2 linux-b203c67ebe752c8f2a2babf5e58d244c82680922.zip | |
csky: add arch support current_stack_pointer
To follow the existing per-arch conventions, using "current_stack_pointer"
to set sp.
This will let it be used in non-arch places(like HARDENED_USERCOPY).
Refer to the implementation of riscv commit fdecfea09328 ("riscv: Rename
"sp_in_global" to "current_stack_pointer"").
Link: https://lore.kernel.org/lkml/20220224060411.1855683-1-keescook@chromium.org/
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Diffstat (limited to 'arch/csky/include')
| -rw-r--r-- | arch/csky/include/asm/processor.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/csky/include/asm/processor.h b/arch/csky/include/asm/processor.h index 63ad71fab30d..ea75d72dea86 100644 --- a/arch/csky/include/asm/processor.h +++ b/arch/csky/include/asm/processor.h @@ -84,4 +84,6 @@ unsigned long __get_wchan(struct task_struct *p); #define cpu_relax() barrier() +register unsigned long current_stack_pointer __asm__("sp"); + #endif /* __ASM_CSKY_PROCESSOR_H */ |