Commit 367b0df1 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 

Pull ARM updates from Russell King:

 - StrongARM SA1111 updates to modernise and remove cruft

 - Add StrongARM gpio drivers for board GPIOs

 - Verify size of zImage is what we expect to avoid issues with
   appended DTB

 - nommu updates from Vladimir Murzin

 - page table read-write-execute checking from Jinbum Park

 - Broadcom Brahma-B15 cache updates from Florian Fainelli

 - Avoid failure with kprobes test caused by inappropriately
   placed kprobes

 - Remove __memzero optimisation (which was incorrectly being
   used directly by some drivers)

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits)
  ARM: 8745/1: get rid of __memzero()
  ARM: 8744/1: don't discard memblock for kexec
  ARM: 8743/1: bL_switcher: add MODULE_LICENSE tag
  ARM: 8742/1: Always use REFCOUNT_FULL
  ARM: 8741/1: B15: fix unused label warnings
  ARM: 8740/1: NOMMU: Make sure we do not hold stale data in mem[] array
  ARM: 8739/1: NOMMU: Setup VBAR/Hivecs for secondaries cores
  ARM: 8738/1: Disable CONFIG_DEBUG_VIRTUAL for NOMMU
  ARM: 8737/1: mm: dump: add checking for writable and executable
  ARM: 8736/1: mm: dump: make the page table dumping seq_file
  ARM: 8735/1: mm: dump: make page table dumping reusable
  ARM: sa1100/neponset: add GPIO drivers for control and modem registers
  ARM: sa1100/assabet: add BCR/BSR GPIO driver
  ARM: 8734/1: mm: idmap: Mark variables as ro_after_init
  ARM: 8733/1: hw_breakpoint: Mark variables as __ro_after_init
  ARM: 8732/1: NOMMU: Allow userspace to access background MPU region
  ARM: 8727/1: MAINTAINERS: Update brcmstb entries to cover B15 code
  ARM: 8728/1: B15: Register reboot notifier for KEXEC
  ARM: 8730/1: B15: Add suspend/resume hooks
  ARM: 8726/1: B15: Add CPU hotplug awareness
  ...
parents 44644391 3a175cdf

MAINTAINERS

+2 −0
Original line number Diff line number Diff line
@@ -2855,6 +2855,8 @@ S: Maintained 
F:	arch/arm/mach-bcm/*brcmstb*

F:	arch/arm/boot/dts/bcm7*.dts*

F:	drivers/bus/brcmstb_gisb.c

F:	arch/arm/mm/cache-b15-rac.c

F:	arch/arm/include/asm/hardware/cache-b15-rac.h

N:	brcmstb



BROADCOM BMIPS CPUFREQ DRIVER

arch/arm/Kconfig

+4 −8
Original line number Diff line number Diff line
@@ -3,8 +3,8 @@ config ARM 
	bool

	default y

	select ARCH_CLOCKSOURCE_DATA

	select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID

	select ARCH_HAS_DEBUG_VIRTUAL

	select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID && !KEXEC

	select ARCH_HAS_DEBUG_VIRTUAL if MMU

	select ARCH_HAS_DEVMEM_IS_ALLOWED

	select ARCH_HAS_ELF_RANDOMIZE

	select ARCH_HAS_SET_MEMORY
@@ -100,6 +100,7 @@ config ARM 
	select OLD_SIGACTION

	select OLD_SIGSUSPEND3

	select PERF_USE_VMALLOC

	select REFCOUNT_FULL

	select RTC_LIB

	select SYS_SUPPORTS_APM_EMULATION

	# Above selects are sorted alphabetically; please add new ones
@@ -1526,12 +1527,10 @@ config THUMB2_KERNEL 
	bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY

	depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K

	default y if CPU_THUMBONLY

	select ARM_ASM_UNIFIED

	select ARM_UNWIND

	help

	  By enabling this option, the kernel will be compiled in

	  Thumb-2 mode. A compiler/assembler that understand the unified

	  ARM-Thumb syntax is needed.

	  Thumb-2 mode.



	  If unsure, say N.
@@ -1566,9 +1565,6 @@ config THUMB2_AVOID_R_ARM_THM_JUMP11 


	  Unless you are sure your tools don't have this problem, say Y.



config ARM_ASM_UNIFIED

	bool



config ARM_PATCH_IDIV

	bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()"

	depends on CPU_32v7 && !XIP_KERNEL

arch/arm/Kconfig.debug

+32 −1
Original line number Diff line number Diff line
@@ -3,10 +3,14 @@ menu "Kernel hacking" 


source "lib/Kconfig.debug"



config ARM_PTDUMP

config ARM_PTDUMP_CORE

	def_bool n



config ARM_PTDUMP_DEBUGFS

	bool "Export kernel pagetable layout to userspace via debugfs"

	depends on DEBUG_KERNEL

	depends on MMU

	select ARM_PTDUMP_CORE

	select DEBUG_FS

	---help---

	  Say Y here if you want to show the kernel pagetable layout in a
@@ -16,6 +20,33 @@ config ARM_PTDUMP 
	  kernel.

	  If in doubt, say "N"



config DEBUG_WX

	bool "Warn on W+X mappings at boot"

	select ARM_PTDUMP_CORE

	---help---

		Generate a warning if any W+X mappings are found at boot.



		This is useful for discovering cases where the kernel is leaving

		W+X mappings after applying NX, as such mappings are a security risk.



		Look for a message in dmesg output like this:



			arm/mm: Checked W+X mappings: passed, no W+X pages found.



		or like this, if the check failed:



			arm/mm: Checked W+X mappings: FAILED, <N> W+X pages found.



		Note that even if the check fails, your kernel is possibly

		still fine, as W+X mappings are not a security hole in

		themselves, what they do is that they make the exploitation

		of other unfixed kernel bugs easier.



		There is no runtime or memory usage effect of this option

		once the kernel has booted up - it's a one time check.



		If in doubt, say "Y".



# RMK wants arm kernels compiled with frame pointers or stack unwinding.

# If you know what you are doing and are willing to live without stack

# traces, you can get a slightly smaller kernel by setting this option to

arch/arm/Makefile

+4 −2
Original line number Diff line number Diff line
@@ -115,9 +115,11 @@ ifeq ($(CONFIG_ARM_UNWIND),y) 
CFLAGS_ABI	+=-funwind-tables

endif



# Accept old syntax despite ".syntax unified"

AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)



ifeq ($(CONFIG_THUMB2_KERNEL),y)

AFLAGS_AUTOIT	:=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)

AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)

CFLAGS_ISA	:=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)

AFLAGS_ISA	:=$(CFLAGS_ISA) -Wa$(comma)-mthumb

# Work around buggy relocation from gas if requested:
@@ -125,7 +127,7 @@ ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) 
KBUILD_CFLAGS_MODULE	+=-fno-optimize-sibling-calls

endif

else

CFLAGS_ISA	:=$(call cc-option,-marm,)

CFLAGS_ISA	:=$(call cc-option,-marm,) $(AFLAGS_NOWARN)

AFLAGS_ISA	:=$(CFLAGS_ISA)

endif

arch/arm/boot/compressed/string.c

+0 −5
Original line number Diff line number Diff line
@@ -130,8 +130,3 @@ void *memset(void *s, int c, size_t count) 
		*xs++ = c;

	return s;

}
 


void __memzero(void *s, size_t count)

{

	memset(s, 0, count);

}

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