Re: physical memory for user space application

["Dave B. Sharp" <daveb_sharp@yahoo.ca>]

Hi Manohar,
  Thanx, much apreciated. Which driver do I send the
ioctl to? Is it possible to pin down the memory in
question or is that done implicitly? I know in Windoze
this can be done.
  Cheers
   Dave


--- "P.Manohar" <pmanohar@lantana.cs.iitm.ernet.in>
wrote:

> 
> you can use ioctls for tranfering data from user
> space to kernel space
> 
> regards
> Manohar.
> 
> On Tue, 15 Nov 2005, Dave B. Sharp wrote:
> 
> >
> > Hi There,
> >
> >   I want to access the physical memory associated
> > with a user space application.
> >   From my driver I would like to:
> >    - Lock down a range of memory (ensure that it
> is
> > not paged out)
> >    - Get a mapping of the corrosponding phyiscal
> > memory i.e. I would like to be able to read the
> > physical memory directly.
> >    - I don't want to use the proc file system.
> >   Can anyone tell me what the fucntions and / or
> > data structures are to acomplish this?
> >      Cheers
> >        Dave Sharp
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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