<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/arch/arm/lib, branch v5.3</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>ARM: 8897/1: check stmfd instruction using right shift</title>
<updated>2019-08-23T10:32:37+00:00</updated>
<author>
<name>Lvqiang Huang</name>
<email>lvqiang.huang@unisoc.com</email>
</author>
<published>2019-08-01T07:15:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=69389837171140e2a94c5b8683c08dceaa8c9c8c'/>
<id>69389837171140e2a94c5b8683c08dceaa8c9c8c</id>
<content type='text'>
In the commit ef41b5c92498 ("ARM: make kernel oops easier to read"),
-               .word   0xe92d0000 &gt;&gt; 10        @ stmfd sp!, {}
+               .word   0xe92d0000 &gt;&gt; 11        @ stmfd sp!, {}
then the shift need to change to 11.

Signed-off-by: Lvqiang Huang &lt;Lvqiang.Huang@unisoc.com&gt;
Signed-off-by: Chunyan Zhang &lt;zhang.lyra@gmail.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In the commit ef41b5c92498 ("ARM: make kernel oops easier to read"),
-               .word   0xe92d0000 &gt;&gt; 10        @ stmfd sp!, {}
+               .word   0xe92d0000 &gt;&gt; 11        @ stmfd sp!, {}
then the shift need to change to 11.

Signed-off-by: Lvqiang Huang &lt;Lvqiang.Huang@unisoc.com&gt;
Signed-off-by: Chunyan Zhang &lt;zhang.lyra@gmail.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc</title>
<updated>2019-07-20T00:05:08+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2019-07-20T00:05:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=24e44913aa746098349370a0f279733c0cadcba7'/>
<id>24e44913aa746098349370a0f279733c0cadcba7</id>
<content type='text'>
Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes. Main theme this merge window:

   - The Netx platform (Netx 100/500) platform is removed by Linus
     Walleij-- the SoC doesn't have active maintainers with hardware,
     and in discussions with the vendor the agreement was that it's OK
     to remove.

   - Russell King has a series of patches that cleans up and refactors
     SA1101 and RiscPC support"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: stm32: use "depends on" instead of "if" after prompt
  ARM: sa1100: convert to common clock framework
  ARM: exynos: Cleanup cppcheck shifting warning
  ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view
  ARM: exynos: Only build MCPM support if used
  arm: add missing include platform-data/atmel.h
  ARM: davinci: Use GPIO lookup table for DA850 LEDs
  ARM: OMAP2: drop explicit assembler architecture
  ARM: use arch_extension directive instead of arch argument
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB
  ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  MAINTAINERS: mvebu: Add git entry
  soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh
  ARM: OMAP2+: Make some variables static
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes. Main theme this merge window:

   - The Netx platform (Netx 100/500) platform is removed by Linus
     Walleij-- the SoC doesn't have active maintainers with hardware,
     and in discussions with the vendor the agreement was that it's OK
     to remove.

   - Russell King has a series of patches that cleans up and refactors
     SA1101 and RiscPC support"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: stm32: use "depends on" instead of "if" after prompt
  ARM: sa1100: convert to common clock framework
  ARM: exynos: Cleanup cppcheck shifting warning
  ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view
  ARM: exynos: Only build MCPM support if used
  arm: add missing include platform-data/atmel.h
  ARM: davinci: Use GPIO lookup table for DA850 LEDs
  ARM: OMAP2: drop explicit assembler architecture
  ARM: use arch_extension directive instead of arch argument
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB
  ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  MAINTAINERS: mvebu: Add git entry
  soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh
  ARM: OMAP2+: Make some variables static
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge branch 'for-arm-soc' of git://git.armlinux.org.uk/~rmk/linux-arm into arm/soc</title>
<updated>2019-07-16T00:29:45+00:00</updated>
<author>
<name>Olof Johansson</name>
<email>olof@lixom.net</email>
</author>
<published>2019-07-16T00:29:45+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7cba7caceebc0c17acd4165db313575f8c0f5387'/>
<id>7cba7caceebc0c17acd4165db313575f8c0f5387</id>
<content type='text'>
* 'for-arm-soc' of git://git.armlinux.org.uk/~rmk/linux-arm: (21 commits)
  ARM: sa1100: convert to common clock framework
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  ARM: sa1100/neponset: convert serial to use gpiod APIs
  ARM: sa1100/hackkit: remove empty serial mctrl functions
  ARM: sa1100/badge4: remove commented out modem control initialisers
  ARM: sa1100/h3xxx: convert serial to gpiod APIs
  ARM: sa1100/assabet: convert serial to gpiod APIs
  serial: sa1100: add note about modem control signals
  serial: sa1100: add support for mctrl gpios
  ARM: riscpc: dma: use __iomem pointers for writing DMA
  ARM: riscpc: dma: improve address/length writing
  ARM: riscpc: dma: make state a local variable
  ARM: riscpc: dma: eliminate "cur_sg" scatterlist usage
  ARM: riscpc: fix DMA
  ARM: riscpc: fix ecard printing
  ARM: riscpc: fix lack of keyboard interrupts after irq conversion
  ...
Signed-off-by: Olof Johansson &lt;olof@lixom.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
* 'for-arm-soc' of git://git.armlinux.org.uk/~rmk/linux-arm: (21 commits)
  ARM: sa1100: convert to common clock framework
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  ARM: sa1100/neponset: convert serial to use gpiod APIs
  ARM: sa1100/hackkit: remove empty serial mctrl functions
  ARM: sa1100/badge4: remove commented out modem control initialisers
  ARM: sa1100/h3xxx: convert serial to gpiod APIs
  ARM: sa1100/assabet: convert serial to gpiod APIs
  serial: sa1100: add note about modem control signals
  serial: sa1100: add support for mctrl gpios
  ARM: riscpc: dma: use __iomem pointers for writing DMA
  ARM: riscpc: dma: improve address/length writing
  ARM: riscpc: dma: make state a local variable
  ARM: riscpc: dma: eliminate "cur_sg" scatterlist usage
  ARM: riscpc: fix DMA
  ARM: riscpc: fix ecard printing
  ARM: riscpc: fix lack of keyboard interrupts after irq conversion
  ...
Signed-off-by: Olof Johansson &lt;olof@lixom.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500</title>
<updated>2019-06-19T15:09:55+00:00</updated>
<author>
<name>Thomas Gleixner</name>
<email>tglx@linutronix.de</email>
</author>
<published>2019-06-04T08:11:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d2912cb15bdda8ba4a5dd73396ad62641af2f520'/>
<id>d2912cb15bdda8ba4a5dd73396ad62641af2f520</id>
<content type='text'>
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Enrico Weigelt &lt;info@metux.net&gt;
Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Enrico Weigelt &lt;info@metux.net&gt;
Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc</title>
<updated>2019-06-11T16:42:36+00:00</updated>
<author>
<name>Russell King</name>
<email>rmk+kernel@armlinux.org.uk</email>
</author>
<published>2019-05-21T14:31:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=12290cc462c24deee503e84e87dea622b40ea15d'/>
<id>12290cc462c24deee503e84e87dea622b40ea15d</id>
<content type='text'>
Move the assembly files for RiscPC from arch/arm/lib to mach-rpc so
that we contain RiscPC bits in one subdirectory.

Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Move the assembly files for RiscPC from arch/arm/lib to mach-rpc so
that we contain RiscPC bits in one subdirectory.

Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333</title>
<updated>2019-06-05T15:37:06+00:00</updated>
<author>
<name>Thomas Gleixner</name>
<email>tglx@linutronix.de</email>
</author>
<published>2019-05-29T23:57:47+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4505153954fdb1465d2b178288a9bf646f2a2166'/>
<id>4505153954fdb1465d2b178288a9bf646f2a2166</id>
<content type='text'>
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Alexios Zavras &lt;alexios.zavras@intel.com&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Alexios Zavras &lt;alexios.zavras@intel.com&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8844/1: use unified assembler in assembly files</title>
<updated>2019-02-26T11:26:07+00:00</updated>
<author>
<name>Stefan Agner</name>
<email>stefan@agner.ch</email>
</author>
<published>2019-02-17T23:57:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e44fc38818ed795f4c661d5414c6e0affae0fa63'/>
<id>e44fc38818ed795f4c661d5414c6e0affae0fa63</id>
<content type='text'>
Use unified assembler syntax (UAL) in assembly files. Divided
syntax is considered deprecated. This will also allow to build
the kernel using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Use unified assembler syntax (UAL) in assembly files. Divided
syntax is considered deprecated. This will also allow to build
the kernel using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8843/1: use unified assembler in headers</title>
<updated>2019-02-26T11:26:06+00:00</updated>
<author>
<name>Stefan Agner</name>
<email>stefan@agner.ch</email>
</author>
<published>2019-02-17T23:56:58+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c001899a5d6c2d7a0f3b75b2307ddef137fb46a6'/>
<id>c001899a5d6c2d7a0f3b75b2307ddef137fb46a6</id>
<content type='text'>
Use unified assembler syntax (UAL) in headers. Divided syntax is
considered deprecated. This will also allow to build the kernel
using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Use unified assembler syntax (UAL) in headers. Divided syntax is
considered deprecated. This will also allow to build the kernel
using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8841/1: use unified assembler in macros</title>
<updated>2019-02-26T11:25:43+00:00</updated>
<author>
<name>Stefan Agner</name>
<email>stefan@agner.ch</email>
</author>
<published>2019-02-17T23:54:36+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a216376add730ec86a8bcee5735f62fd890cb2d0'/>
<id>a216376add730ec86a8bcee5735f62fd890cb2d0</id>
<content type='text'>
Use unified assembler syntax (UAL) in macros. Divided syntax is
considered deprecated. This will also allow to build the kernel
using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Use unified assembler syntax (UAL) in macros. Divided syntax is
considered deprecated. This will also allow to build the kernel
using LLVM's integrated assembler.

Signed-off-by: Stefan Agner &lt;stefan@agner.ch&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: 8833/1: Ensure that NEON code always compiles with Clang</title>
<updated>2019-02-12T15:20:09+00:00</updated>
<author>
<name>Nathan Chancellor</name>
<email>natechancellor@gmail.com</email>
</author>
<published>2019-02-02T02:34:36+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=de9c0d49d85dc563549972edc5589d195cd5e859'/>
<id>de9c0d49d85dc563549972edc5589d195cd5e859</id>
<content type='text'>
While building arm32 allyesconfig, I ran into the following errors:

  arch/arm/lib/xor-neon.c:17:2: error: You should compile this file with
  '-mfloat-abi=softfp -mfpu=neon'

  In file included from lib/raid6/neon1.c:27:
  /home/nathan/cbl/prebuilt/lib/clang/8.0.0/include/arm_neon.h:28:2:
  error: "NEON support not enabled"

Building V=1 showed NEON_FLAGS getting passed along to Clang but
__ARM_NEON__ was not getting defined. Ultimately, it boils down to Clang
only defining __ARM_NEON__ when targeting armv7, rather than armv6k,
which is the '-march' value for allyesconfig.

&gt;From lib/Basic/Targets/ARM.cpp in the Clang source:

  // This only gets set when Neon instructions are actually available, unlike
  // the VFP define, hence the soft float and arch check. This is subtly
  // different from gcc, we follow the intent which was that it should be set
  // when Neon instructions are actually available.
  if ((FPU &amp; NeonFPU) &amp;&amp; !SoftFloat &amp;&amp; ArchVersion &gt;= 7) {
    Builder.defineMacro("__ARM_NEON", "1");
    Builder.defineMacro("__ARM_NEON__");
    // current AArch32 NEON implementations do not support double-precision
    // floating-point even when it is present in VFP.
    Builder.defineMacro("__ARM_NEON_FP",
                        "0x" + Twine::utohexstr(HW_FP &amp; ~HW_FP_DP));
  }

Ard Biesheuvel recommended explicitly adding '-march=armv7-a' at the
beginning of the NEON_FLAGS definitions so that __ARM_NEON__ always gets
definined by Clang. This doesn't functionally change anything because
that code will only run where NEON is supported, which is implicitly
armv7.

Link: https://github.com/ClangBuiltLinux/linux/issues/287

Suggested-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Signed-off-by: Nathan Chancellor &lt;natechancellor@gmail.com&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Reviewed-by: Nick Desaulniers &lt;ndesaulniers@google.com&gt;
Reviewed-by: Stefan Agner &lt;stefan@agner.ch&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
While building arm32 allyesconfig, I ran into the following errors:

  arch/arm/lib/xor-neon.c:17:2: error: You should compile this file with
  '-mfloat-abi=softfp -mfpu=neon'

  In file included from lib/raid6/neon1.c:27:
  /home/nathan/cbl/prebuilt/lib/clang/8.0.0/include/arm_neon.h:28:2:
  error: "NEON support not enabled"

Building V=1 showed NEON_FLAGS getting passed along to Clang but
__ARM_NEON__ was not getting defined. Ultimately, it boils down to Clang
only defining __ARM_NEON__ when targeting armv7, rather than armv6k,
which is the '-march' value for allyesconfig.

&gt;From lib/Basic/Targets/ARM.cpp in the Clang source:

  // This only gets set when Neon instructions are actually available, unlike
  // the VFP define, hence the soft float and arch check. This is subtly
  // different from gcc, we follow the intent which was that it should be set
  // when Neon instructions are actually available.
  if ((FPU &amp; NeonFPU) &amp;&amp; !SoftFloat &amp;&amp; ArchVersion &gt;= 7) {
    Builder.defineMacro("__ARM_NEON", "1");
    Builder.defineMacro("__ARM_NEON__");
    // current AArch32 NEON implementations do not support double-precision
    // floating-point even when it is present in VFP.
    Builder.defineMacro("__ARM_NEON_FP",
                        "0x" + Twine::utohexstr(HW_FP &amp; ~HW_FP_DP));
  }

Ard Biesheuvel recommended explicitly adding '-march=armv7-a' at the
beginning of the NEON_FLAGS definitions so that __ARM_NEON__ always gets
definined by Clang. This doesn't functionally change anything because
that code will only run where NEON is supported, which is implicitly
armv7.

Link: https://github.com/ClangBuiltLinux/linux/issues/287

Suggested-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Signed-off-by: Nathan Chancellor &lt;natechancellor@gmail.com&gt;
Acked-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Reviewed-by: Nick Desaulniers &lt;ndesaulniers@google.com&gt;
Reviewed-by: Stefan Agner &lt;stefan@agner.ch&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
</pre>
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