Re: Walking all the physical memory in an x86 system

[linux-os]

On Tue, 30 Nov 2004 P@xxxxxxxxxxxxxx wrote:

> Jan Engelhardt wrote:
> > > 	I've written a 2.4 kernel module where I'm trying to walk and
> > > record all of the physical memory contents in an x86 system. I have the
> > > following code fragment that does it but I suspect I'm missing a portion
> > > of the memory:
> > >
> > > Is there a better way to record all of the contents of physical memory
> > > since what I have above doesn't seem to get everything?
> >
> >
> > Maybe something userspace based?
> >
> > dd_rescue /dev/mem copyofmem
>
> Doesn't equate to a power of 2
> (nor does `grep MemTotal /proc/meminfo`)
>
> Pdraig.
> -


Kernel variable "num_physpages" tells how many pages the kernel
knows about.


Cheers,
Dick Johnson
Penguin : Linux version 2.6.9 on an i686 machine (5537.79 BogoMips).
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