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SubjectRe: [Patch] IBM Real-Time "SMI Free" mode driver -v7
On 21-Oct-2010 03:25 PM, Matthew Garrett wrote:
>On Thu, Oct 21, 2010 at 07:23:19AM -0700, Vernon Mauery wrote:
>> On 21-Oct-2010 02:54 PM, Matthew Garrett wrote:
>>> Applied, thanks. It'd be nice if we didn't have to rely on DMI,
>>> especially since enterprise customers often end up running later kernels
>>
>> I am not sure what you mean here by problems with DMI running later
>> kernels.
>
>Oops, sorry! I mean running on older kernels.

Do older kernels not have DMI support? I would think that if an
enterprise distribution wanted this driver they would likely already
have DMI support backported as well.

Or they can work with me to find a way that works in that kernel. I was
thinking that in the current (and future) kernel, DMI was the best way
to go.

>>> - is there any other way to determine that this is safe to load? Could
>>
>> I can't think of anything off the top of my head that would allow us to
>> ensure that this is only loaded on IBM systems. DMI is pretty good
>> about that.
>
>I'd suggest using DMI to verify that it's an IBM, and perhaps also using
>DMI to check that it's a server or blade rather than a laptop or
>desktop. After that you could just check the ebda rather than having to
>have an entry for every specific machine.

I went for a better safe than sorry route. Before I added the DMI
checking I had some reports of this getting loaded on non-IBM hardware
and it came up with some nasty error messages. I figured since I knew
exactly which platforms have support, I could just limit the driver to
those. Then there is the force parameter that allows a user to ignore
the DMI data and try to load the driver anyway.

--Vernon


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