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Question concerning memory configuration variables

To: sgi-mips <>
Subject: Question concerning memory configuration variables
From: Jeff Harrell <>
Date: Tue, 01 Feb 2000 09:45:25 -0700
I have been looking at 2.2.23 and noticed that a few things concerning
paging has changed.  I wonder if anybody could give me a definition of a
of the variables that are defined.  The first is the max_low_pfn
variable.  It looks
like the first time that I see this called is during the paging_init()
function and
passed to free_area_init().   The memory map size is determined from
this variable.
It memory map will extend to the end of physical memory (what used to be
upper).  Do I determine the max_low_pfn by calculating the available
memory and subtract
the size of the kernel?  How does the variable "start" play into this
equation?  Are they
the same?  Any help would be greatly appreciated.


Jeff Harrell                    Work:  (801) 619-6104
Broadband Access group/TI

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