Re: RISC-V Linux Port v6

From	Arnd Bergmann <arnd@arndb.de>
Newsgroups	linux.kernel
Subject	Re: RISC-V Linux Port v6
Date	2017-07-12 21:40 +0200
Message-ID	<u2vEl-3VV-3@gated-at.bofh.it> (permalink)
References	<u2eNc-1ui-3@gated-at.bofh.it> <u2kIV-5nd-3@gated-at.bofh.it> <u2u5A-2Sc-9@gated-at.bofh.it>
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On Wed, Jul 12, 2017 at 7:55 PM, Will Deacon <will.deacon@arm.com> wrote:
> On Wed, Jul 12, 2017 at 09:58:01AM +0200, Arnd Bergmann wrote:
>> On Wed, Jul 12, 2017 at 3:31 AM, Palmer Dabbelt <palmer@dabbelt.com> wrote:
>> Without having looked at the current state of the patch series, I would
>> guess that next week is a good time to ask for inclusion *in* linux-next,
>> while continuing the review.
>
> My only concern about getting this into -next is that is sets expectations
> that this is going to land in the next merge window, but we're unable to
> review much of the atomics, barriers and locking code because the
> architecture document is being rewritten and is not yet available:
>
> https://marc.info/?i=8709419e3d964b86b025bb35a6b55440%40HQMAIL105.nvidia.com

I don't see that as a show-stopper for the merge: yes, the kernel port
will need to conform to the architecture once we know what it is, but
overall, this seems like a detail that can easily be fixed after the merge
as no ABI is involved.

The worst case here is that the initial release is a bit unstable, slow
or both and this will get fixed later. I would expect this to be the
case even if the atomics are all correct ;-)

       Arnd

Thread

RISC-V Linux Port v6 Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 03:40 +0200
  [PATCH 17/17] RISC-V: Build Infastructure Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 03:40 +0200
  [PATCH 07/17] irqchip: New RISC-V PLIC Driver Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 03:40 +0200
  [PATCH 08/17] tty: New RISC-V SBI console driver Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 03:40 +0200
  [PATCH 15/17] RISC-V: Paging and MMU Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 03:40 +0200
  Re: RISC-V Linux Port v6 Arnd Bergmann <arnd@arndb.de> - 2017-07-12 10:00 +0200
    Re: RISC-V Linux Port v6 "Luis R. Rodriguez" <mcgrof@kernel.org> - 2017-07-12 16:00 +0200
    Re: RISC-V Linux Port v6 Will Deacon <will.deacon@arm.com> - 2017-07-12 20:00 +0200
      Re: RISC-V Linux Port v6 Arnd Bergmann <arnd@arndb.de> - 2017-07-12 21:40 +0200
  Re: [PATCH 16/17] RISC-V: User-facing API James Hogan <james.hogan@imgtec.com> - 2017-07-12 13:10 +0200
    Re: [PATCH 16/17] RISC-V: User-facing API Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 18:30 +0200
      Re: [PATCH 16/17] RISC-V: User-facing API James Hogan <james.hogan@imgtec.com> - 2017-07-12 19:20 +0200
        Re: [PATCH 16/17] RISC-V: User-facing API Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-14 00:00 +0200
  Re: [PATCH 10/17] RISC-V: Atomic and Locking Code Boqun Feng <boqun.feng@gmail.com> - 2017-07-12 14:50 +0200
  Re: [PATCH 10/17] RISC-V: Atomic and Locking Code Boqun Feng <boqun.feng@gmail.com> - 2017-07-12 14:50 +0200
    Re: [PATCH 10/17] RISC-V: Atomic and Locking Code Peter Zijlstra <peterz@infradead.org> - 2017-07-12 15:00 +0200
    Re: [PATCH 10/17] RISC-V: Atomic and Locking Code Palmer Dabbelt <palmer@dabbelt.com> - 2017-07-12 19:20 +0200
  Re: [PATCH 10/17] RISC-V: Atomic and Locking Code Arnd Bergmann <arnd@arndb.de> - 2017-07-12 15:20 +0200

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