diff options
| author | Ingo Molnar <[email protected]> | 2015-03-17 14:42:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2015-03-17 16:01:41 +0100 |
| commit | ac9af4983e77765a642b5a21086bc1fdc55418c4 (patch) | |
| tree | edf060ff787d2351a20619d6a8b4239cf1b8cb23 | |
| parent | 9854dd74c3f6af8d9d527de86c6074b7ed0495f1 (diff) | |
x86/asm/entry/64: Remove thread_struct::usersp
Nothing uses thread_struct::usersp anymore, so remove it.
Originally-from: Denys Vlasenko <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Will Drewry <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/process_64.c | 3 |
2 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 3ac5092ec113..572099710ba2 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -493,7 +493,6 @@ struct thread_struct { #ifdef CONFIG_X86_32 unsigned long sysenter_cs; #else - unsigned long usersp; /* Copy from PDA */ unsigned short es; unsigned short ds; unsigned short fsindex; diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 59696d76a4e3..14df2be4711f 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -161,7 +161,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, p->thread.sp0 = (unsigned long)task_stack_page(p) + THREAD_SIZE; childregs = task_pt_regs(p); p->thread.sp = (unsigned long) childregs; - p->thread.usersp = me->thread.usersp; set_tsk_thread_flag(p, TIF_FORK); p->thread.io_bitmap_ptr = NULL; @@ -235,7 +234,6 @@ start_thread_common(struct pt_regs *regs, unsigned long new_ip, loadsegment(es, _ds); loadsegment(ds, _ds); load_gs_index(0); - current->thread.usersp = new_sp; regs->ip = new_ip; regs->sp = new_sp; regs->cs = _cs; @@ -397,7 +395,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) /* * Switch the PDA and FPU contexts. */ - prev->usersp = this_cpu_read(old_rsp); this_cpu_write(current_task, next_p); /* |