Hello Newbies, I usually compile my kernel with an unsupported O3 option(why not? :). Today after running the latest 4.1-rc1 kernel with O3, I got a boot failure. This is the first time this has happened for me. If someone is interested in debugging this, please read on. Can you try to reproduce this bug? If yes, can you also bisect this? I am a bit swamped right now and can try to reproduce this only on Wednesday. If you are interested, apply the following patch, compile and see if the kernel boots. Thanks! diff --git a/Makefile b/Makefile index 14c722f..05950ca 100644 --- a/Makefile +++ b/Makefile @@ -297,8 +297,8 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ HOSTCC = gcc HOSTCXX = g++ -HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 -HOSTCXXFLAGS = -O2 +HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O3 -fomit-frame-pointer -std=gnu89 +HOSTCXXFLAGS = -O3 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ @@ -616,7 +616,7 @@ KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) else -KBUILD_CFLAGS += -O2 +KBUILD_CFLAGS += -O3 endif -- Andev _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
