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Re: [FuSa SIG] [RFC 7/7] arm/gic-v3: add GIC version suffix to iomem range variables


  • To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Andrii Anisov <andrii.anisov@xxxxxxxxx>
  • From: Andrii Anisov <Andrii_Anisov@xxxxxxxx>
  • Date: Thu, 21 Nov 2019 09:05:33 +0000
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  • Cc: "lars.kurth.xen@xxxxxxxxx" <lars.kurth.xen@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, "fusa-sig@xxxxxxxxxxxxxxxxxxxx" <fusa-sig@xxxxxxxxxxxxxxxxxxxx>
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  • Thread-topic: [RFC 7/7] arm/gic-v3: add GIC version suffix to iomem range variables

Hello Stefano,

I suppose, in the discussion with ARM, it might be useful to come with existing support case numbers.
Here they are:

Case ID. sort descending Status. sort descending Product. sort descending Summary. sort descending Created On. sort descending Updated on . sort descending Actions
CAS-138402-Y0Y9C3 Defect/Enhancement ARM COMPILER 6 C style shift operators are missed among supported scatter file expressions
CAS-137352-T7F4V1 More Information Needed DS-5 ARM COMPILER-6 ULTIMATE FL ARM Linker defined symbols are not counted as referred from a steering file.
CAS-138292-L5S0V0 More Information Needed ARM COMPILER 6 Static data symbols, moved to init section, becomes global.
CAS-137357-Z7W3B8 Defect/Enhancement DS-5 ARM COMPILER-6 ULTIMATE FL ARM Compiler 6 compiles data only C file with SoftVFP attribute.
CAS-137359-V7G6W6 Closed DS-5 ARM COMPILER-6 ULTIMATE FL How to rename sections using ARM Compiler 6 tools?


ANDRII ANISOV

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From: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Sent: Thursday, November 21, 2019 12:23 AM
To: Andrii Anisov <andrii.anisov@xxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx <xen-devel@xxxxxxxxxxxxxxxxxxxx>; Andrii Anisov <Andrii_Anisov@xxxxxxxx>; Julien Grall <julien@xxxxxxx>; Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>; fusa-sig@xxxxxxxxxxxxxxxxxxxx <fusa-sig@xxxxxxxxxxxxxxxxxxxx>; lars.kurth.xen@xxxxxxxxx <lars.kurth.xen@xxxxxxxxx>
Subject: Re: [RFC 7/7] arm/gic-v3: add GIC version suffix to iomem range variables
 
On Thu, 14 Nov 2019, Andrii Anisov wrote:
> Hello Stefano,
>
> On 11.11.19 22:59, Stefano Stabellini wrote:
> > this seems a very serious compiler bug.
>
> Yep.
>
> > This, together with the other bug described in the previous patch, makes
> > me think the ARMCC is not quite ready for showtime.
>
> Yet, this particular ARM Compiler version is safety certified and LTS.
>
> > Do you know if there
> > are any later version of the compiler that don't have these problems?
>
> I don't know, ARM did not say something special about it. As I know, the
> reason to take this compiler version was that it is the "latest and greatest"
> safety certified
>
> > I would hate to introduce these workarounds
>
> I hated finding and publishing these workarounds, but here we are.
>
> The main question here is if XEN needs a tag "Support safety certified
> compiler" by the cost of accepting such workarounds.
> Then discuss how to reduce their stench.

Before we get to that point, maybe we can raise the issue with Arm using
our combined channels. I'll raise it internally at Xilinx, and we could
also discuss it during one of the next FuSa calls (list in CC).
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