Re: [patch] Ignore MCFG if the mmconfig area isn't reserved in thee820 table

From: Andi Kleen
Date: Fri Mar 24 2006 - 10:37:23 EST


On Friday 24 March 2006 16:24, Arjan van de Ven wrote:
> Ashok Raj wrote:
> > On Thu, Mar 23, 2006 at 11:15:19AM -0800, Arjan van de Ven wrote:
> >> >
> >> > I'll do a new patch using this for x86_64 though, no need to make a
> >> > second function like this.
> >>
> >> int __init e820_mapped(unsigned long start, unsigned long end,
> >> unsigned type)
> >
> >
> > Why not use the same type of function like x86_64 as well instead of the newly
> > added is_820_mapped()? If the purpose of both functions is the same, i386 could benefit
> > with same style code instead of a slight variant.
>
> the purpose is not the same. the e820_mapped function is far less strict in its check
> (I'm still afraid it is too weak for this purpose actually)

In theory they should be the same. What do you think is different?

>
> and it's not is_e820_mapped but is_e820_reserved()

That's just a special case.

-Andi

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