arch: Pass faults by const reference where possible

This patch changes how faults are passed between methods in an attempt
to copy as few reference-counting pointer instances as possible. This
should avoid unecessary copies being created, contributing to the
increment/decrement of the reference counters.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/arch/arm/stage2_mmu.cc b/src/arch/arm/stage2_mmu.cc
index 01451548c..98eeedb78 100755
--- a/src/arch/arm/stage2_mmu.cc
+++ b/src/arch/arm/stage2_mmu.cc
@@ -114,8 +114,8 @@ Stage2MMU::Stage2Translation::Stage2Translation(Stage2MMU &_parent,
 }
 
 void
-Stage2MMU::Stage2Translation::finish(Fault _fault, RequestPtr req, ThreadContext *tc,
-    BaseTLB::Mode mode)
+Stage2MMU::Stage2Translation::finish(const Fault &_fault, RequestPtr req,
+                                     ThreadContext *tc, BaseTLB::Mode mode)
 {
     fault = _fault;