kvm tools: enable LTO

Build with -flto set, which should enable link-time-optimizations.

I'm not sure if it provides a significant performance increase, but
it's probably just worth it for catching issues which it may cause.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/Makefile b/tools/kvm/Makefile
index 8aa012523d53e9d01fa8e0caa3960aceb21c113b..0e2fa6631db56177d346cf990e57311c0e2e6f75 100644 (file)
--- a/tools/kvm/Makefile
+++ b/tools/kvm/Makefile
@@ -243,7 +243,7 @@ DEFINES     += -DKVMTOOLS_VERSION='"$(KVMTOOLS_VERSION)"'
 DEFINES        += -DBUILD_ARCH='"$(ARCH)"'
 
 KVM_INCLUDE := include
-CFLAGS += $(CPPFLAGS) $(DEFINES) -I$(KVM_INCLUDE) -I$(ARCH_INCLUDE) -I$(KINCL_PATH)/include -I$(KINCL_PATH)/arch/$(ARCH)/include/ -O2 -fno-strict-aliasing -g
+CFLAGS += $(CPPFLAGS) $(DEFINES) -I$(KVM_INCLUDE) -I$(ARCH_INCLUDE) -I$(KINCL_PATH)/include -I$(KINCL_PATH)/arch/$(ARCH)/include/ -O2 -fno-strict-aliasing -g -flto
 
 WARNINGS += -Wall
 WARNINGS += -Wcast-align