lkml.org 
[lkml]   [2001]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[OT] Wrapping memory.
Hi All,

I have a pseudo-on-topic question:

I would like to have a 64 KBarray (of char), that's trivial, however what
I would like is for the last 4 KB [yes thankfully this is exactly one
page... (assume i386)] to reference the same physical memory as the first
four.

I.e. 16 4KB pages referencing physical 4 KB pages number 0..14, 0.

Is this at all possible? If so, how would I do this in user space (and
could it be done without root priv?)?

Thanks a lot,

Maciej Zenczykowski.

P.S. Yes, this is necessary, otherwise I have to give up on 32-bit access
(switch to 8-bit) and include mod 60KB in every memory access (very random
and I don't think I could predict when no to do this...]

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:13    [W:0.089 / U:5.800 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site