How to examine physical address content in Linux

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* How to examine physical address content in Linux
@ 2005-01-22  9:30 Kai-Yuan Ho
  2005-01-22  9:53 ` Måns Rullgård
  0 siblings, 1 reply; 2+ messages in thread
From: Kai-Yuan Ho @ 2005-01-22  9:30 UTC (permalink / raw)
  To: linux-kernel

Dear all:
As I know , the address we can see are virtual address.
How can I examine physical address content in Linux?


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: How to examine physical address content in Linux
  2005-01-22  9:30 How to examine physical address content in Linux Kai-Yuan Ho
@ 2005-01-22  9:53 ` Måns Rullgård
  0 siblings, 0 replies; 2+ messages in thread
From: Måns Rullgård @ 2005-01-22  9:53 UTC (permalink / raw)
  To: linux-kernel

"Kai-Yuan Ho" <mr934318@cs.nthu.edu.tw> writes:

> Dear all:
> As I know , the address we can see are virtual address.
> How can I examine physical address content in Linux?

If you want to look at a specific physical address, you can read (or
mmap) /dev/mem, if you are root.  Be careful though, even reading
certain addresses will crash your computer.

If you want the virtual to physical mapping for your process, there is
no simple way.

-- 
Måns Rullgård
mru@inprovide.com

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