linux-kernel - linux-next: manual merge of the signal tree with the cortex tree

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Date:	Mon, 5 Nov 2012 15:03:07 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Uwe Kleine-König" 
	<u.kleine-koenig@...gutronix.de>,
	Catalin Marinas <catalin.marinas@....com>
Subject: linux-next: manual merge of the signal tree with the cortex tree

Hi Al,

Today's linux-next merge of the signal tree got a conflict in
arch/arm/kernel/process.c between commit 77a3018e38b9 ("Cortex-M3: Add
support for exception handling") from the cortex tree and commit
9e6479930021 ("arm: switch to generic fork/vfork/clone") from the signal
tree.

I fixed it up (I think - see below) and can carry the fix as necessary
(no action is required).

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

diff --cc arch/arm/kernel/process.c
index 585b9ab,4ab80bb..0000000
--- 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;

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