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Commit c207aee4 authored by Josh Poimboeuf's avatar Josh Poimboeuf Committed by Ingo Molnar
Browse files

objtool, x86: Add several functions and files to the objtool whitelist 



In preparation for an objtool rewrite which will have broader checks,
whitelist functions and files which cause problems because they do
unusual things with the stack.

These whitelists serve as a TODO list for which functions and files
don't yet have undwarf unwinder coverage.  Eventually most of the
whitelists can be removed in favor of manual CFI hint annotations or
objtool improvements.

Signed-off-by: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/7f934a5d707a574bda33ea282e9478e627fb1829.1498659915.git.jpoimboe@redhat.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent dcc914f4

arch/x86/crypto/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -2,6 +2,8 @@ 
# Arch-specific CryptoAPI modules.

#



OBJECT_FILES_NON_STANDARD := y



avx_supported := $(call as-instr,vpxor %xmm0$(comma)%xmm0$(comma)%xmm0,yes,no)

avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1\

				$(comma)4)$(comma)%ymm2,yes,no)

arch/x86/crypto/sha1-mb/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -2,6 +2,8 @@ 
# Arch-specific CryptoAPI modules.

#



OBJECT_FILES_NON_STANDARD := y



avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1\

                                $(comma)4)$(comma)%ymm2,yes,no)

ifeq ($(avx2_supported),yes)

arch/x86/crypto/sha256-mb/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -2,6 +2,8 @@ 
# Arch-specific CryptoAPI modules.

#



OBJECT_FILES_NON_STANDARD := y



avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1\

                                $(comma)4)$(comma)%ymm2,yes,no)

ifeq ($(avx2_supported),yes)

arch/x86/kernel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ OBJECT_FILES_NON_STANDARD_head_$(BITS).o := y 
OBJECT_FILES_NON_STANDARD_relocate_kernel_$(BITS).o	:= y

OBJECT_FILES_NON_STANDARD_ftrace_$(BITS).o		:= y

OBJECT_FILES_NON_STANDARD_test_nx.o			:= y

OBJECT_FILES_NON_STANDARD_paravirt_patch_$(BITS).o	:= y



# If instrumentation of this dir is enabled, boot hangs during first second.

# Probably could be more selective here, but note that files related to irqs,

arch/x86/kernel/acpi/Makefile

+2 −0
Original line number Diff line number Diff line 
OBJECT_FILES_NON_STANDARD_wakeup_$(BITS).o := y



obj-$(CONFIG_ACPI)		+= boot.o

obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup_$(BITS).o

obj-$(CONFIG_ACPI_APEI)		+= apei.o