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ARM fixes for 5.6:

Browse source 
- allow use of ARMv8 arch timer in 32-bit VDSO
 - rename missed .fixup section
 - fix kbuild issue with stack protector GCC plugin
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - allow use of ARMv8 arch timer in 32-bit VDSO

 - rename missed .fixup section

 - fix kbuild issue with stack protector GCC plugin

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8961/2: Fix Kbuild issue caused by per-task stack protector GCC plugin
  ARM: 8958/1: rename missed uaccess .fixup section
  ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()
This commit is contained in:
Linus Torvalds 2020-03-16 15:39:52 -07:00
commit 3d135f5224
4 changed files with 8 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/arm/Makefile
View file

@ -307,13 +307,15 @@ endif
ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
prepare: stack_protector_prepare
stack_protector_prepare: prepare0
$(eval KBUILD_CFLAGS += \
$(eval SSP_PLUGIN_CFLAGS := \
-fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \
awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
include/generated/asm-offsets.h) \
-fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
include/generated/asm-offsets.h))
$(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
$(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
endif
all: $(notdir $(KBUILD_IMAGE))

4
arch/arm/boot/compressed/Makefile
View file

@ -101,7 +101,6 @@ clean-files += piggy_data lib1funcs.S ashldi3.S bswapsdi2.S \
$(libfdt) $(libfdt_hdrs) hyp-stub.S
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
KBUILD_CFLAGS += $(DISABLE_ARM_SSP_PER_TASK_PLUGIN)
ifeq ($(CONFIG_FUNCTION_TRACER),y)
ORIG_CFLAGS := $(KBUILD_CFLAGS)
@ -117,7 +116,8 @@ CFLAGS_fdt_ro.o := $(nossp-flags-y)
CFLAGS_fdt_rw.o := $(nossp-flags-y)
CFLAGS_fdt_wip.o := $(nossp-flags-y)
ccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin -I$(obj)
ccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin \
-I$(obj) $(DISABLE_ARM_SSP_PER_TASK_PLUGIN)
asflags-y := -DZIMAGE
# Supply kernel BSS size to the decompressor via a linker symbol.

2
arch/arm/kernel/vdso.c
View file

@ -94,6 +94,8 @@ static bool __init cntvct_functional(void)
* this.
*/
np = of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
if (!np)
np = of_find_compatible_node(NULL, NULL, "arm,armv8-timer");
if (!np)
goto out_put;

2
arch/arm/lib/copy_from_user.S
View file

@ -118,7 +118,7 @@ ENTRY(arm_copy_from_user)
ENDPROC(arm_copy_from_user)
.pushsection .fixup,"ax"
.pushsection .text.fixup,"ax"
.align 0
copy_abort_preamble
ldmfd sp!, {r1, r2, r3}