Re: Virtual address space exhaustion (was Discontigmem virt_to_page() )

From: Richard B. Johnson (
Date: Fri May 03 2002 - 14:17:35 EST

On Fri, 3 May 2002, Christoph Hellwig wrote:

> On Fri, May 03, 2002 at 03:01:48PM -0400, Richard B. Johnson wrote:
> > The other Unix's I've become familiar are Sun-OS, the
> SunOS 5 uses separate address spaces on sparcv9 (32 and 64bit).
> The same is true for many Linux ports, e.g. sparc64 or s390.

No no! I'm not talking about the physical address spaces. Many
CPUs have separate address spaces for separate functions. I'm
taking about the virtual address space that the process sees.
There are no holes in this virtual address space of SunOS, and
no "separate stuff" (I/O space) seen by a user-mode task.

Dick Johnson

Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).

                 Windows-2000/Professional isn't.

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