Just tried 4.20-rc5 on an old K6-2 PC with gcc 5.3.1, got an error about non-retpoline compiler, turned CONFIG_RETPOLINE off and retried.
To my surprise, compilation still breaks with arch/x86/Makefile:224: *** You are building kernel with non-retpoline compiler, please update your compiler.. Stop. As I read the Makefile, it should error only when CONFIG_RETPOLINE is enabled, but it still breaks. $ grep -r CONFIG_RETPOLINE .config # CONFIG_RETPOLINE is not set $ grep -r CONFIG_RETPOLINE include/ include/generated/autoconf.h:#define CONFIG_RETPOLINE 1 include/config/auto.conf:CONFIG_RETPOLINE=y So the headers have not been updated yet, maybe? -- Meelis Roos <mr...@linux.ee>