Re: Query on directly accessing physical memory from a kernel module

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Subject: Re: Query on directly accessing physical memory from a kernel module
From: Arjun <cse.syslab@xxxxxxxxx>
Date: Wed, 30 Apr 2008 04:08:23 -0400
In-reply-to: <C86899CCB10A6C4E93D5978DCB232D4B0840F053@xxxxxxxxxxxxxxxxxxxx>

On Wed, Apr 30, 2008 at 4:00 AM, Rajat Jain <Rajat.Jain@xxxxxxxxxxxx> wrote:

You can use ioremap() to build page tables for that physical address and
then use that virtual address using ioread / iowrite functions.

(thanks for the prompt response)

hmm, but shouldn't the kernel be able to access physical memory directly (up to a some range anyway) ?

References:
- Query on directly accessing physical memory from a kernel module
  - From: Arjun
- RE: Query on directly accessing physical memory from a kernel module
  - From: Rajat Jain

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