RE: Issues regarding memory hole.

From: Luck, Tony <>
Date: 2004-03-02 06:29:30
>I am booting with the 2.6.1 kernel on Itanium2 machine.
>The page granularity is set to 16MB for the kernel. 
>After normal boot of the kernel, I observe a memory hole 
>from 1-16MB. Why is this usable memory region discarded 
>as a memory hole? 

1-16MB is discarded on many machines because of the PC
compatible VGA memory mapped in the bottom 1MB.  The Linux
ia64 kernel requires that *all* of a granule be real memory,
all of the granule must be cacheable too.

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Received on Mon Mar 1 14:35:59 2004

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