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SubjectRe: Comments on UV tlb flushing
On Tue, Jul 29, 2008 at 07:43:39AM -0700, Jeremy Fitzhardinge 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.
>
> J

I don't know much about x86 configuration options. It looks like
CONFIG_X86_GENERICARCH is fairly new, so I don't know where to look
for samples of how it will be set by RH and SuSE.

But if the tlb_uv.o code should be present in "every" distro x86 kernel
I don't see the point of having to configure it in. Why not just
configure it out for small (embedded) kernels?

-Cliff
--
Cliff Wickman
Silicon Graphics, Inc.
cpw@sgi.com
(651) 683-3824


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