linux-kernel - Re: Comments on UV tlb flushing

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Message-ID: <86802c440807291113u59ba996dg340c8feba1039f3a@mail.gmail.com>
Date:	Tue, 29 Jul 2008 11:13:16 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Jeremy Fitzhardinge" <jeremy@...p.org>
Cc:	"Cliff Wickman" <cpw@....com>,
	"Nick Piggin" <nickpiggin@...oo.com.au>, steiner@....com,
	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: Comments on UV tlb flushing

On Tue, Jul 29, 2008 at 7:43 AM, Jeremy Fitzhardinge <jeremy@...p.org> wrote:
> Cliff Wickman wrote:
>>
>> I think that the Linux distributions are not going to build a special
>> UV kernel, are they?  So every distro would have to be prompted to turn on
>> CONFIG_X86_UV, or else their kernel is not going to boot on UV.
>>
>
> Distros will generally turn on everything.  You could have it on by default
> if the kernel is built for CONFIG_X86_GENERICARCH which enables support for
> other big numa configurations.  I think distros generally build with that
> enabled anyway.

config X86_GENERICARCH
       bool "Generic architecture"
        depends on X86_32
       help
          This option compiles in the NUMAQ, Summit, bigsmp, ES7000, default
          subarchitectures.  It is intended for a generic binary kernel.
          if you select them all, kernel will probe it one by one. and will
          fallback to default.

YH
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