https://bugzilla.kernel.org/show_bug.cgi?id=207173 zoran.davidovac@xxxxxxxxx changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|blocking |enhancement --- Comment #7 from zoran.davidovac@xxxxxxxxx --- Interesting, I did not know that -O3 is not supported on x86 or x86_64, in kernel Doc it does not say it is not supported and It worked very well until now :) So this happen also to size optimized kernel? But now I also know why O3 is disabled in menuconfig :) KBUILD_CFLAGS += -O2 else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 KBUILD_CFLAGS += -O3 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += -Os endif I've read somewhere that on arm -O3 is related to implicit parallelism Changed category to enhancement, let me know if I need to change anything else? thx. -- You are receiving this mail because: You are watching the assignee of the bug.