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| author |   Ingo Molnar <mingo@kernel.org> | 2015-03-17 14:42:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-17 16:01:41 +0100 |
| commit | ac9af4983e77765a642b5a21086bc1fdc55418c4 (patch) | |
| tree | edf060ff787d2351a20619d6a8b4239cf1b8cb23 /arch/x86/kernel/process_64.c | |
| parent | x86/asm/entry/64: Simplify 'old_rsp' usage (diff) | |
| download | linux-dev-ac9af4983e77765a642b5a21086bc1fdc55418c4.tar.xz linux-dev-ac9af4983e77765a642b5a21086bc1fdc55418c4.zip | |
x86/asm/entry/64: Remove thread_struct::usersp
Nothing uses thread_struct::usersp anymore, so remove it.
Originally-from: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Borislav Petkov <bp@alien8.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Drewry <wad@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/process_64.c')
| -rw-r--r-- | arch/x86/kernel/process_64.c | 3 |
1 files changed, 0 insertions, 3 deletions
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); /* |