On 03/11/2015 01:55 PM, Borislav Petkov wrote: > On Tue, Mar 10, 2015 at 11:45:07AM +0100, Denys Vlasenko wrote: >> @@ -894,11 +893,6 @@ extern unsigned long thread_saved_pc(struct task_struct >> *tsk); >> #define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1) >> extern unsigned long KSTK_ESP(struct task_struct *task); >> >> -/* >> - * User space RSP while inside the SYSCALL fast path >> - */ >> -DECLARE_PER_CPU(unsigned long, old_rsp); > > Please grep the whole arch/x86/ tree for old_rsp as there are more > leftovers.
I think I did: $ grep -r old_rsp arch/x86 arch/x86/xen/xen-asm_64.S: movq %rsp, PER_CPU_VAR(old_rsp) arch/x86/xen/xen-asm_64.S: pushq PER_CPU_VAR(old_rsp) arch/x86/xen/xen-asm_64.S: movq %rsp, PER_CPU_VAR(old_rsp) arch/x86/xen/xen-asm_64.S: pushq PER_CPU_VAR(old_rsp) arch/x86/kernel/process_64.c:__visible DEFINE_PER_CPU(unsigned long, old_rsp); arch/x86/kernel/entry_64.S: movq %rsp,PER_CPU_VAR(old_rsp) arch/x86/kernel/entry_64.S: movq PER_CPU_VAR(old_rsp),%rcx arch/x86/kernel/entry_64.S: /* 0(%rsp): old_rsp */ The only remaining use in C code is the definition in process_64.c It is necessary for assembly (.S) files. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
