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Re: [PATCH 9/9] RISC-V: Build Infastructure

From Palmer Dabbelt <palmer@dabbelt.com>
Newsgroups linux.kernel
Subject Re: [PATCH 9/9] RISC-V: Build Infastructure
Date 2017-06-29 18:40 +0200
Message-ID <tXKE2-1tl-29@gated-at.bofh.it> (permalink)
References <tXsH8-rB-29@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 28 Jun 2017 14:25:00 PDT (-0700), james.hogan@imgtec.com wrote:
> Hi Palmer,
>
> On Wed, Jun 28, 2017 at 11:55:38AM -0700, Palmer Dabbelt wrote:
>> +	select SYSRISCV_ATOMIC if !ISA_A
> ...
>> +config SYSRISCV_ATOMIC
>> +	bool "Include support for atomic operation syscalls"
>> +	default !ISA_A
>> +	help
>> +	  If atomic memory instructions are present, i.e.,
>> +	  CONFIG_ISA_A, this includes support for the syscall that
>> +	  provides atomic accesses.  This is only useful to run
>> +	  binaries that require atomic access but were compiled with
>> +	  -mno-atomic.
>> +
>> +	  If CONFIG_ISA_A is unset, this option is mandatory.
>> +
>> +	  If you don't know what to do here, say N.
>
> Can this be removed now that you mentioned the atomics syscall being
> mandatory? I can't find any other references to it.

Oh, sorry, I must have just missed it when swizzling that around.  I'll remove
it as part of our v4.

  diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
  index 38c8112861fd..9f587af28910 100644
  --- a/arch/riscv/Kconfig
  +++ b/arch/riscv/Kconfig
  @@ -155,20 +155,6 @@ config ISA_A

             If you don't know what to do here, say Y.

  -config SYSRISCV_ATOMIC
  -       bool "Include support for atomic operation syscalls"
  -       default !ISA_A
  -       help
  -         If atomic memory instructions are present, i.e.,
  -         CONFIG_ISA_A, this includes support for the syscall that
  -         provides atomic accesses.  This is only useful to run
  -         binaries that require atomic access but were compiled with
  -         -mno-atomic.
  -
  -         If CONFIG_ISA_A is unset, this option is mandatory.
  -
  -         If you don't know what to do here, say N.
  -
   config RV_PUM
          def_bool y
          prompt "Protect User Memory" if EXPERT

Thanks for catching this!

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RISC-V Linux Port v3 Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 21:00 +0200
  [PATCH 6/9] RISC-V: Device, timer, IRQs, and the SBI Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 21:00 +0200
    Re: [PATCH 6/9] RISC-V: Device, timer, IRQs, and the SBI Tobias Klauser <tklauser@distanz.ch> - 2017-06-29 10:40 +0200
      Re: [PATCH 6/9] RISC-V: Device, timer, IRQs, and the SBI Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 01:00 +0200
        Re: [PATCH 6/9] RISC-V: Device, timer, IRQs, and the SBI Tobias Klauser <tklauser@distanz.ch> - 2017-06-30 10:00 +0200
  [PATCH 4/9] RISC-V: ELF and module implementation Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 21:00 +0200
  [PATCH 7/9] RISC-V: Paging and MMU Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 21:10 +0200
    Re: [PATCH 7/9] RISC-V: Paging and MMU James Hogan <james.hogan@imgtec.com> - 2017-06-29 01:20 +0200
      Re: [PATCH 7/9] RISC-V: Paging and MMU Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 00:20 +0200
  [PATCH 9/9] RISC-V: Build Infastructure Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 21:10 +0200
    Re: [PATCH 9/9] RISC-V: Build Infastructure Karsten Merker <merker@debian.org> - 2017-06-28 23:10 +0200
      Re: [PATCH 9/9] RISC-V: Build Infastructure Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 23:20 +0200
    Re: [PATCH 9/9] RISC-V: Build Infastructure James Hogan <james.hogan@imgtec.com> - 2017-06-28 23:30 +0200
      Re: [PATCH 9/9] RISC-V: Build Infastructure Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-29 18:40 +0200
    Re: [PATCH 9/9] RISC-V: Build Infastructure James Hogan <james.hogan@imgtec.com> - 2017-06-29 01:00 +0200
      Re: [PATCH 9/9] RISC-V: Build Infastructure Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 00:20 +0200
  Re: [PATCH 8/9] RISC-V: User-facing API Thomas Gleixner <tglx@linutronix.de> - 2017-06-29 00:00 +0200
  Re: [PATCH 8/9] RISC-V: User-facing API Thomas Gleixner <tglx@linutronix.de> - 2017-06-29 00:00 +0200
    Re: [PATCH 8/9] RISC-V: User-facing API Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-29 19:30 +0200
  Re: [PATCH 8/9] RISC-V: User-facing API James Hogan <james.hogan@imgtec.com> - 2017-06-29 00:50 +0200
    Re: [PATCH 8/9] RISC-V: User-facing API Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-29 23:50 +0200
  Re: [PATCH 5/9] RISC-V: Task implementation James Hogan <james.hogan@imgtec.com> - 2017-06-29 01:40 +0200
    Re: [PATCH 5/9] RISC-V: Task implementation Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 01:00 +0200
  Re: [PATCH 5/9] RISC-V: Task implementation Tobias Klauser <tklauser@distanz.ch> - 2017-06-29 10:30 +0200
    Re: [PATCH 5/9] RISC-V: Task implementation Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 01:00 +0200
  Re: [PATCH 1/9] RISC-V: Init and Halt Code Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-29 11:50 +0200
    Re: [PATCH 1/9] RISC-V: Init and Halt Code Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-30 01:00 +0200

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