[PATCH] arm64: mm: remove the redundant code

Huang Shijie shijie.huang at arm.com
Sun Apr 17 18:49:56 PDT 2016


We already re-enable interrupts where necessary in the entry code, so
there is no need to do it again in do_page fault. This patch removes
the redundant code.

Signed-off-by: Huang Shijie <shijie.huang at arm.com>
---
 arch/arm64/mm/fault.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 95df28b..bdc193c 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -212,10 +212,6 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr,
 	tsk = current;
 	mm  = tsk->mm;
 
-	/* Enable interrupts if they were enabled in the parent context. */
-	if (interrupts_enabled(regs))
-		local_irq_enable();
-
 	/*
 	 * If we're in an interrupt or have no user context, we must not take
 	 * the fault.
-- 
2.5.5




More information about the linux-arm-kernel mailing list