Messages in this thread |  | | Subject | Re: [Q] was the SYSENTER/SYSCALL fast system calls completed or discared in the end?? | From | Terje Eggestad <> | Date | 23 Nov 2001 14:54:02 +0100 |
| |
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/
|  |