diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-11 23:03:16 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-16 11:23:59 +0100 |
| commit | 2fff071d28b54f050f62654dad4ec111b8416d8e (patch) | |
| tree | 03b6d5c3772dd8b9a9c445f03b58826d083720df /arch/x86/include/asm | |
| parent | 8c40397f22a4ff7996d3abdc2d9d1d90f9fc8054 (diff) | |
| download | linux-2fff071d28b54f050f62654dad4ec111b8416d8e.tar.bz2 | |
x86/process: Unify copy_thread_tls()
While looking at the TSS io bitmap it turned out that any change in that
area would require identical changes to copy_thread_tls(). The 32 and 64
bit variants share sufficient code to consolidate them into a common
function to avoid duplication of upcoming modifications.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/ptrace.h | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/switch_to.h | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h index 332eb3525867..5057a8ed100b 100644 --- a/arch/x86/include/asm/ptrace.h +++ b/arch/x86/include/asm/ptrace.h @@ -361,5 +361,11 @@ extern int do_get_thread_area(struct task_struct *p, int idx, extern int do_set_thread_area(struct task_struct *p, int idx, struct user_desc __user *info, int can_allocate); +#ifdef CONFIG_X86_64 +# define do_set_thread_area_64(p, s, t) do_arch_prctl_64(p, s, t) +#else +# define do_set_thread_area_64(p, s, t) (0) +#endif + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_X86_PTRACE_H */ diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h index 18a4b6890fa8..0e059b73437b 100644 --- a/arch/x86/include/asm/switch_to.h +++ b/arch/x86/include/asm/switch_to.h @@ -103,7 +103,17 @@ static inline void update_task_stack(struct task_struct *task) if (static_cpu_has(X86_FEATURE_XENPV)) load_sp0(task_top_of_stack(task)); #endif +} +static inline void kthread_frame_init(struct inactive_task_frame *frame, + unsigned long fun, unsigned long arg) +{ + frame->bx = fun; +#ifdef CONFIG_X86_32 + frame->di = arg; +#else + frame->r12 = arg; +#endif } #endif /* _ASM_X86_SWITCH_TO_H */ |