diff options
| author | Tong Tiangen <tongtiangen@huawei.com> | 2022-10-22 03:43:40 +0200 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2022-10-22 05:52:29 +0200 |
| commit | b203c67ebe752c8f2a2babf5e58d244c82680922 (patch) | |
| tree | ef2e931ce17801419dcef1d083779be3e23c4829 /arch/csky/kernel | |
| parent | Linux 6.1-rc1 (diff) | |
| download | linux-b203c67ebe752c8f2a2babf5e58d244c82680922.tar.xz 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/kernel')
| -rw-r--r-- | arch/csky/kernel/stacktrace.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/csky/kernel/stacktrace.c b/arch/csky/kernel/stacktrace.c index 9f78f5d21511..27ecd63e321b 100644 --- a/arch/csky/kernel/stacktrace.c +++ b/arch/csky/kernel/stacktrace.c @@ -23,10 +23,9 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, sp = user_stack_pointer(regs); pc = instruction_pointer(regs); } else if (task == NULL || task == current) { - const register unsigned long current_sp __asm__ ("sp"); const register unsigned long current_fp __asm__ ("r8"); fp = current_fp; - sp = current_sp; + sp = current_stack_pointer; pc = (unsigned long)walk_stackframe; } else { /* task blocked in __switch_to */ @@ -68,8 +67,7 @@ static void notrace walk_stackframe(struct task_struct *task, sp = user_stack_pointer(regs); pc = instruction_pointer(regs); } else if (task == NULL || task == current) { - const register unsigned long current_sp __asm__ ("sp"); - sp = current_sp; + sp = current_stack_pointer; pc = (unsigned long)walk_stackframe; } else { /* task blocked in __switch_to */ |