[POWERPC] Initialize paca->current earlier
Currently, we initialize the "current" pointer in the PACA (which
is used by the "current" macro in the kernel) before calling
setup_system(). That means that early_setup() is called with
current still "NULL" which is -not- a good idea. It happens to
work so far but breaks with lockdep when early code calls printk.
This changes it so that all PACAs are statically initialized with
__current pointing to the init task. For non-0 CPUs, this is fixed
up before use.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 867b22d..ac163bd 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -73,6 +73,7 @@
.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \
.hw_cpu_id = 0xffff, \
.slb_shadow_ptr = &slb_shadow[number], \
+ .__current = &init_task, \
}
struct paca_struct paca[] = {