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Commit f3fb5b7b authored by Andy Lutomirski's avatar Andy Lutomirski Committed by H. Peter Anvin
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x86: Remove unnecessary compile flag tweaks for vsyscall code 



As of commit 98d0ac38
Author: Andy Lutomirski <luto@mit.edu>
Date:   Thu Jul 14 06:47:22 2011 -0400

    x86-64: Move vread_tsc and vread_hpet into the vDSO

user code no longer directly calls into code in arch/x86/kernel/, so
we don't need compile flag hacks to make it safe.  All vdso code is
in the vdso directory now.

Signed-off-by: default avatarAndy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/835cd05a4c7740544d09723d6ba48f4406f9826c.1312988155.git.luto@mit.edu


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent c149a665

arch/x86/kernel/Makefile

+0 −13
Original line number Diff line number Diff line
@@ -17,19 +17,6 @@ CFLAGS_REMOVE_ftrace.o = -pg 
CFLAGS_REMOVE_early_printk.o = -pg

endif



#

# 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_paravirt.o	:= $(nostackp)

GCOV_PROFILE_vsyscall_64.o	:= n

GCOV_PROFILE_hpet.o		:= n

GCOV_PROFILE_tsc.o		:= n

GCOV_PROFILE_paravirt.o		:= n



obj-y			:= process_$(BITS).o signal.o entry_$(BITS).o

obj-y			+= traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o

obj-y			+= time.o ioport.o ldt.o dumpstack.o

arch/x86/kernel/vsyscall_64.c

+0 −3
Original line number Diff line number Diff line
@@ -18,9 +18,6 @@ 
 *  use the vDSO.

 */



/* Disable profiling for userspace code: */

#define DISABLE_BRANCH_PROFILING



#include <linux/time.h>

#include <linux/init.h>

#include <linux/kernel.h>