Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and structures

From	Nicholas Piggin <npiggin@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and structures
Date	2017-08-14 08:10 +0200
Message-ID	<uegJC-w3-13@gated-at.bofh.it> (permalink)
References	<uclNn-6X2-5@gated-at.bofh.it> <uclNo-6X2-11@gated-at.bofh.it> <uegJC-w3-15@gated-at.bofh.it>
Organization	IBM

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On Mon, 14 Aug 2017 15:21:48 +1000
Michael Ellerman <mpe@ellerman.id.au> wrote:

> Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> writes:

> >  arch/powerpc/include/asm/vas.h       |  35 ++++
> >  arch/powerpc/include/uapi/asm/vas.h  |  25 +++  
> 
> I thought we weren't exposing VAS to userspace yet?
> 
> If we are then we need to get things straight WRT copy/paste abort.

No we should not be. This might be just a leftover hunk that should
be moved to a future series.

At the moment (as far as I understand) it should be limited to
preempt-disabled, process context, kernel users which avoids any
concern for switch_to.

Thanks,
Nick

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Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields  and structures Nicholas Piggin <npiggin@gmail.com> - 2017-08-14 08:10 +0200
  Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and structures Michael Ellerman <mpe@ellerman.id.au> - 2017-08-14 13:10 +0200
  Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and  structures Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2017-08-14 21:20 +0200
    Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and structures Michael Ellerman <mpe@ellerman.id.au> - 2017-08-16 14:10 +0200
      Re: [PATCH v6 01/17] powerpc/vas: Define macros, register fields and  structures Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2017-08-17 01:10 +0200

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