Re: [Xen-devel] [PATCH 00/12] xen/arm: Add support to build with clang

[Artem Mygaiev <Artem_Mygaiev@xxxxxxxx>]

Hi Julien,

On Wed, 2019-03-27 at 18:45 +0000, Julien Grall wrote:
> Hi all,
> 
> This series adds support to build Xen Arm with clang. This series was tested
> with clang 8.0.
> 
> Note that I only did build for arm64. I still need to look at the arm32
> build.
> 

I wonder if you have time to try the series with Arm Compiler 6? I am
asking because AFAIK it is based on clang/llvm [1] and there's a
safety-compliant version of it certified by TUV [2]. I don't have a
license yet so cannot try it myself but maybe you have access.

> 
> Cheers,
> 
> Julien Grall (12):
>   xen: clang: Support correctly cross-compile
>   xen/arm: fix get_cpu_info() when built with clang
>   xen/arm: zynqmp: Fix header guard for xilinx-zynqmp-eemi.h
>   xen/arm: memaccess: Initialize correctly *access in
>     __p2m_get_mem_access
>   xen/arm64: bitops: Match the register size with the value size in flsl
>   xen/arm64: sysreg: Implement the 32-bit helpers using the 64-bit
>     helpers
>   xen/arm: cpuerrata: Match register size with value size in
>     check_workaround_*
>   xen/arm: cpufeature: Match register size with value size in
>     cpus_have_const_cap
>   xen/arm: guest_walk: Avoid theoritical unitialized value in
>     get_top_bit
>   xen/arm: mm: Mark check_memory_layout_alignment_constraints as unused
>   xen/arm: traps: Mark check_stack_alignment_constraints as unused
>   xen/arm64: __cmpxchg and __cmpxchg_mb should always be inline
> 
>  config/StdGNU.mk                                   |  9 +++++++--
>  xen/arch/arm/guest_walk.c                          |  2 +-
>  xen/arch/arm/mem_access.c                          |  2 +-
>  xen/arch/arm/mm.c                                  |  3 ++-
>  xen/arch/arm/traps.c                               |  3 ++-
>  xen/include/asm-arm/arm64/bitops.h                 |  3 ++-
>  xen/include/asm-arm/arm64/cmpxchg.h                | 10 ++++++----
>  xen/include/asm-arm/arm64/sysregs.h                | 11 +++--------
>  xen/include/asm-arm/cpuerrata.h                    |  2 +-
>  xen/include/asm-arm/cpufeature.h                   |  2 +-
>  xen/include/asm-arm/current.h                      | 10 +++++++++-
>  xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h |  2 +-
>  12 files changed, 36 insertions(+), 23 deletions(-)
> 

[1] 
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.swdev.comp6/index.html

[2] 
https://store.developer.arm.com/store/embedded-iot-software-tools/arm-compiler-6-functional-safety?_ga=2.198817711.1237223028.1553771353-424456504.1550666847

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