From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Wed, 7 Nov 2012 03:52:48 +0000 (+1100)
Subject: Merge remote-tracking branch 'signal/for-next'
X-Git-Tag: next-20121107~8
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0fe466f1d8dfb0d00e91ed7790b019b5023d1cb8;p=karo-tx-linux.git

Merge remote-tracking branch 'signal/for-next'

Conflicts:
	arch/arm/kernel/process.c
	arch/sparc/kernel/sys_sparc_64.c
---

0fe466f1d8dfb0d00e91ed7790b019b5023d1cb8
diff --cc arch/arm/kernel/process.c
index 585b9abae606,4ab80bbb6d95..3406b5bda3b2
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@@ -384,14 -383,11 +384,15 @@@ copy_thread(unsigned long clone_flags, 
  
  	memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save));
  
- 	if (likely(regs)) {
- 		*childregs = *regs;
+ 	if (likely(!(p->flags & PF_KTHREAD))) {
+ 		*childregs = *current_pt_regs();
  		childregs->ARM_r0 = 0;
- 		childregs->ARM_sp = stack_start;
+ 		if (stack_start)
+ 			childregs->ARM_sp = stack_start;
 +#if defined CONFIG_CPU_V7M
 +		/* Return to Thread mode with Process stack */
 +		childregs->ARM_EXC_RET = 0xfffffffdUL;
 +#endif
  	} else {
  		memset(childregs, 0, sizeof(struct pt_regs));
  		thread->cpu_context.r4 = stk_sz;
diff --cc arch/sparc/kernel/sys_sparc_64.c
index 878ef3d5fec5,adfe60ece05f..51b85feb8b97
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@@ -729,30 -729,3 +729,8 @@@ SYSCALL_DEFINE5(rt_sigaction, int, sig
  
  	return ret;
  }
 +
- /*
-  * Do a system call from kernel instead of calling sys_execve so we
-  * end up with proper pt_regs.
-  */
- int kernel_execve(const char *filename,
- 		  const char *const argv[],
- 		  const char *const envp[])
- {
- 	long __res;
- 	register long __g1 __asm__ ("g1") = __NR_execve;
- 	register long __o0 __asm__ ("o0") = (long)(filename);
- 	register long __o1 __asm__ ("o1") = (long)(argv);
- 	register long __o2 __asm__ ("o2") = (long)(envp);
- 	asm volatile ("t 0x6d\n\t"
- 		      "sub %%g0, %%o0, %0\n\t"
- 		      "movcc %%xcc, %%o0, %0\n\t"
- 		      : "=r" (__res), "=&r" (__o0)
- 		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
- 		      : "cc");
- 	return __res;
- }
- 
 +asmlinkage long sys_kern_features(void)
 +{
 +	return KERN_FEATURE_MIXED_MODE_STACK;
 +}