[PATCH] x86/asm/entry/64: Remove pointless jump to irq_return

From: Andy Lutomirski
Date: Thu Jun 04 2015 - 16:24:38 EST


INTERRUPT_RETURN turns into a jmp instruction. There's no need for
extra indirection.

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
arch/x86/entry/entry_64.S | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index f7380ea75777..31770662b940 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -663,8 +663,6 @@ retint_kernel:
restore_c_regs_and_iret:
RESTORE_C_REGS
REMOVE_PT_GPREGS_FROM_STACK 8
-
-irq_return:
INTERRUPT_RETURN

ENTRY(native_iret)
@@ -1432,7 +1430,7 @@ nmi_restore:

/* Clear the NMI executing stack variable */
movq $0, 5*8(%rsp)
- jmp irq_return
+ INTERRUPT_RETURN
END(nmi)

ENTRY(ignore_sysret)
--
2.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/