lkml.org 
[lkml]   [2005]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Question regarding x86_64 __PHYSICAL_MASK_SHIFT
 Sorry, corrections.

On Tue, Oct 04, 2005 at 08:59:48PM +0900, Tejun Heo wrote:
>
> Hello, Andi.
>
> In include/asm-x86_64/page.h, __VIRTUAL_MASK_SHIFT is defined as 48
> bits which is the size of virtual address space on current x86_64
> machines as used as such. OTOH, __PHYSICAL_MASK_SHIFT is defined as 46
and used as such.
> and used as mask shift for physical page address (i.e. physaddr >> 12).
physical page number (i.e. physaddr >> 12).

Sorry about extra noise, I gotta eat something, feeling dizzy. :-)

--
tejun
-
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: 2005-10-04 14:04    [W:0.039 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site