powerpc: Unconditionally enabled irq stacks

Irq stacks provide an essential protection from stack overflows through
external interrupts, at the cost of two additionals stacks per CPU.

Enable them unconditionally to simplify the kernel build and prevent
people from accidentally disabling them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index a2b18dffa03e..e5144906a56d 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -28,7 +28,6 @@
 
         .text
 
-#ifdef CONFIG_IRQSTACKS
 _GLOBAL(call_do_softirq)
         mflr    r0
         std     r0,16(r1)
@@ -52,7 +51,6 @@ _GLOBAL(call_handle_irq)
         ld      r0,16(r1)
         mtlr    r0
         blr
-#endif /* CONFIG_IRQSTACKS */
 
         .section        ".toc","aw"
 PPC64_CACHES: