Re: Using >1GB RAM

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 15 Jan 1998 19:29:11 +0000 (GMT)

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> making up for a maximum of 0xfc (252) megabytes of kernel virtual address
> space. Access to physical memory (for /dev/mem or paging) is done
> using temporary mappings.

OpenBSD has this luxury however because it lacks a unified buffer cache. Linux
kernel side may need mappings to more than 252Mbytes of pages

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