lkml.org 
[lkml]   [2000]   [Oct]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.2.18Pre Lan Performance Rocks!

On Mon, 30 Oct 2000, Jeff V. Merkey wrote:

> ds: and es: are both used in copy-to-user and copy-from-user and they
> get reloaded.

And they all share the same segment descriptor. Whats your point? ES is
the default target segment for string operations. DS is the default data
segment. Have you ever profiled how many cycles it takes to do a "mov
__KERNEL_DS, %es" in entry.S, before making your (ridiculous) claim? I
have.

Ingo

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

\
 
 \ /
  Last update: 2005-03-22 12:45    [W:0.255 / U:0.380 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site