Hello Stephen,
On Mon, Nov 05, 2012 at 03:03:07PM +1100, Stephen Rothwell wrote:
> 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 s...@canb.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;
looks good and works for me
Thanks
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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