Commit 0be28863 authored Mar 15, 2019 by Linus Torvalds

linux-arm

Pull ARM updates from Russell King:

 - An improvement from Ard Biesheuvel, who noted that the identity map
   setup was taking a long time due to flush_cache_louis().

 - Update a comment about dma_ops from Wolfram Sang.

 - Remove use of "-p" with ld, where this flag has been a no-op since
   2004.

 - Remove the printing of the virtual memory layout, which is no longer
   useful since we hide pointers.

 - Correct SCU help text.

 - Remove legacy TWD registration method.

 - Add pgprot_device() implementation for mapping PCI sysfs resource
   files.

 - Initialise PFN limits earlier for kmemleak.

 - Fix argument count to match macro definition (affects clang builds)

 - Use unified assembler language almost everywhere for clang, and other
   clang improvements (from Stefan Agner, Nathan Chancellor).

 - Support security extension for noMMU and other noMMU cleanups (from
   Vladimir Murzin).

 - Remove unnecessary SMP bringup code (which was incorrectly copy'n'
   pasted from the ARM platform implementations) and remove it from the
   arch code to discourge further copys of it appearing.

 - Add Cortex A9 erratum preventing kexec working on some SoCs.

 - AMBA bus identification updates from Mike Leach.

 - More use of raw spinlocks to avoid -RT kernel issues (from Yang Shi
   and Sebastian Andrzej Siewior).

 - MCPM hyp/svc mode mismatch fixes from Marek Szyprowski.

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits)
  ARM: 8849/1: NOMMU: Fix encodings for PMSAv8's PRBAR4/PRLAR4
  ARM: 8848/1: virt: Align GIC version check with arm64 counterpart
  ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used
  ARM: 8845/1: use unified assembler in c files
  ARM: 8844/1: use unified assembler in assembly files
  ARM: 8843/1: use unified assembler in headers
  ARM: 8841/1: use unified assembler in macros
  ARM: 8840/1: use a raw_spinlock_t in unwind
  ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
  ARM: 8837/1: coresight: etmv4: Update ID register table to add UCI support
  ARM: 8836/1: drivers: amba: Update component matching to use the CoreSight UCI values.
  ARM: 8838/1: drivers: amba: Updates to component identification for driver matching.
  ARM: 8833/1: Ensure that NEON code always compiles with Clang
  ARM: avoid Cortex-A9 livelock on tight dmb loops
  ARM: smp: remove arch-provided "pen_release"
  ARM: actions: remove boot_lock and pen_release
  ARM: oxnas: remove CPU hotplug implementation
  ARM: qcom: remove unnecessary boot_lock
  ARM: 8832/1: NOMMU: Limit visibility for CONFIG_FLASH_{MEM_BASE,SIZE}
  ARM: 8831/1: NOMMU: pmsa-v8: remove unneeded semicolon
  ...

parents e8a71a38 4c2741ac

Documentation/arm/kernel_mode_neon.txt

+2 −2

Original line number	Diff line number	Diff line
		@@ -6,7 +6,7 @@ TL;DR summary
		* Use only NEON instructions, or VFP instructions that don't rely on support
		code
		* Isolate your NEON code in a separate compilation unit, and compile it with
		'-mfpu=neon -mfloat-abi=softfp'
		'-march=armv7-a -mfpu=neon -mfloat-abi=softfp'
		* Put kernel_neon_begin() and kernel_neon_end() calls around the calls into your
		NEON code
		* Don't sleep in your NEON code, and be aware that it will be executed with
		@@ -87,7 +87,7 @@ instructions appearing in unexpected places if no special care is taken.
		Therefore, the recommended and only supported way of using NEON/VFP in the
		kernel is by adhering to the following rules:
		* isolate the NEON code in a separate compilation unit and compile it with
		'-mfpu=neon -mfloat-abi=softfp';
		'-march=armv7-a -mfpu=neon -mfloat-abi=softfp';
		* issue the calls to kernel_neon_begin(), kernel_neon_end() as well as the calls
		into the unit containing the NEON code from a compilation unit which is not
		built with the GCC flag '-mfpu=neon' set.

arch/arm/Kconfig

+1 −2

Original line number	Diff line number	Diff line
		@@ -1310,7 +1310,7 @@ config SCHED_SMT
		config HAVE_ARM_SCU
		bool
		help
		This option enables support for the ARM system coherency unit
		This option enables support for the ARM snoop control unit

		config HAVE_ARM_ARCH_TIMER
		bool "Architected timer support"
		@@ -1322,7 +1322,6 @@ config HAVE_ARM_ARCH_TIMER

		config HAVE_ARM_TWD
		bool
		select TIMER_OF if OF
		help
		This options enables support for the ARM timer and watchdog unit

arch/arm/Kconfig-nommu

+2 −0

Original line number	Diff line number	Diff line
		@@ -20,10 +20,12 @@ config DRAM_SIZE

		config FLASH_MEM_BASE
		hex 'FLASH Base Address' if SET_MEM_PARAM
		depends on CPU_ARM740T \|\| CPU_ARM946E \|\| CPU_ARM940T
		default 0x00400000

		config FLASH_SIZE
		hex 'FLASH Size' if SET_MEM_PARAM
		depends on CPU_ARM740T \|\| CPU_ARM946E \|\| CPU_ARM940T
		default 0x00400000

		config PROCESSOR_ID

arch/arm/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -10,7 +10,7 @@
		#
		# Copyright (C) 1995-2001 by Russell King

		LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer
		LDFLAGS_vmlinux := --no-undefined -X --pic-veneer
		ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
		LDFLAGS_vmlinux += --be8
		KBUILD_LDFLAGS_MODULE += --be8

arch/arm/boot/bootp/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -8,7 +8,7 @@

		GCOV_PROFILE := n

		LDFLAGS_bootp :=-p --no-undefined -X \
		LDFLAGS_bootp := --no-undefined -X \
		--defsym initrd_phys=$(INITRD_PHYS) \
		--defsym params_phys=$(PARAMS_PHYS) -T
		AFLAGS_initrd.o :=-DINITRD=\"$(INITRD)\"

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