lkml.org 
[lkml]   [2002]   [Dec]   [19]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateThu, 19 Dec 2002 14:16:02 -0800
From"H. Peter Anvin" <>
SubjectRe: Intel P6 vs P7 system call performance
Jamie Lokier wrote:
> 
> Dynamic binaries or libraries can use the indirect call or relocate
> the calls at load time, or if they _really_ want a magic page at a
> position relative to the library, they can just _copy_ the magic page
> from 0xfffe0000.  It is not all that magic.
> 

That would make it impossible for the kernel to have kernel-controlled
data on that page|other page though...
I personally would like to see some better interface than mmap()
/proc/self/mem in order to alias pages, anyway.  We could use a
MAP_ALIAS flag in mmap() for this (where the fd would be ignored, but
the offset would matter.)

	-hpa


-
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 12:31    [W:0.325 / U:0.030 seconds]
©2003-2008 Jasper Spaans