lkml.org 
[lkml]   [2001]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [Q] was the SYSENTER/SYSCALL fast system calls completed or discared in the end??
From
Date
Cool, 

do you happen top know where the patch is? On e that I can apply to
stock 2.4.1x??

TJ

tor, 2001-11-22 kl. 16:26 skrev Andi Kleen:
> Terje Eggestad <terje.eggestad@scali.no> writes:
>
> > ons, 2001-11-21 kl. 22:54 skrev Pavel Machek:
> > >
> > > On Mon 19-11-01 16:38:45, Terje Eggestad wrote:
> > > > subject says it all....
> > > >
> > > > I remember there was a discussion and a patch floating around that
> > > > implemented SYSCALL/SYSRET, just want to know what happened to it....
> > >
> > > discarded
> >
> > Because there was no perf benefit or because the patch was in poor
> > quality?
>
> The x86-64 port uses SYSCALL/SYSRET as the native call method for 64bit
> programs.
>
> Before x86-64 it turned out that SYSCALL is not really usable because
> of some builtin limitations (which are fixed in x86-64). This is only
> a problem for the K6, K7 should have support for SYSENTER/SYSEXIT (the
> Intel equivalent), which seems to be better designed. There is a patch
> to use SYSENTER/SYSEXIT.
>
>
> -Andi
--
_________________________________________________________________________

Terje Eggestad terje.eggestad@scali.no
Scali Scalable Linux Systems http://www.scali.com

Olaf Helsets Vei 6 tel: +47 22 62 89 61 (OFFICE)
P.O.Box 70 Bogerud +47 975 31 574 (MOBILE)
N-0621 Oslo fax: +47 22 62 89 51
NORWAY
_________________________________________________________________________

-
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:0.050 / U:0.840 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site