From e43eb7bab6e82e1aa93ce4d39546c54347a68077 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 14 Feb 2008 08:38:49 +0100 Subject: [PATCH] x86: exclude vsyscall files from stackprotect Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/kernel/Makefile | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 76ec0f8f138..4eb5ce84110 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -6,7 +6,15 @@ extra-y := head_$(BITS).o init_task.o vmlinux.lds extra-$(CONFIG_X86_64) += head64.o CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE) -CFLAGS_vsyscall_64.o := $(PROFILING) -g0 + +# +# vsyscalls (which work on the user stack) should have +# no stack-protector checks: +# +nostackp := $(call cc-option, -fno-stack-protector) +CFLAGS_vsyscall_64.o := $(PROFILING) -g0 $(nostackp) +CFLAGS_hpet.o := $(nostackp) +CFLAGS_tsc_64.o := $(nostackp) obj-y := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o obj-y += traps_$(BITS).o irq_$(BITS).o -- 2.20.1