From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: kernel: ldt allocation failed
Date: 6 Feb 2002 12:19:37 -0800 [thread overview]
Message-ID: <a3s34p$51o$1@cesium.transmeta.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0112070057480.20196-100000@tombigbee.pixar.com.suse.lists.linux.kernel> <p73ofj2lpdg.fsf@oldwotan.suse.de> <200202061402.g16E2Nt32223@Port.imtp.ilyichevsk.odessa.ua> <20020206101231.X21624@devserv.devel.redhat.com>
Followup to: <20020206101231.X21624@devserv.devel.redhat.com>
By author: Jakub Jelinek <jakub@redhat.com>
In newsgroup: linux.dev.kernel
>
> Most sane architectures reserve a thread pointer register (%g6 resp. %g7 on
> sparc, tp on ia64, ppc will use %r2, alpha uses a fast pall call as thread
> "register", s390 uses user access register 0 (and s390x uar 0 and 1), etc.).
> On register starved ia32 there aren't too many spare registers, so %gs is
> used instead.
>
x86-64, interestingly, retains vestigial meaning of the %fs and %gs
registers (but no others) to use as a base pointer for this reason
alone.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com>
next prev parent reply other threads:[~2002-02-06 20:20 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.21.0112070057480.20196-100000@tombigbee.pixar.com.suse.lists.linux.kernel>
[not found] ` <5.1.0.14.2.20011207092244.049f6720@pop.cus.cam.ac.uk.suse.lists.linux.kernel>
[not found] ` <200202061258.g16CwGt31197@Port.imtp.ilyichevsk.odessa.ua.suse.lists.linux.kernel>
2002-02-06 13:19 ` kernel: ldt allocation failed Andi Kleen
2002-02-06 14:06 ` Dave Jones
2002-02-06 14:13 ` Alan Cox
2002-02-06 14:09 ` Andi Kleen
2002-02-06 14:39 ` Alan Cox
2002-02-06 16:37 ` bert hubert
2002-02-06 15:51 ` Bill Davidsen
2002-02-06 16:08 ` Alan Cox
2002-02-06 16:29 ` John Levon
2002-02-06 18:01 ` Alan Cox
2002-02-06 18:02 ` Denis Vlasenko
2002-02-06 15:12 ` Jakub Jelinek
2002-02-06 18:11 ` Maciej W. Rozycki
2002-02-06 20:19 ` H. Peter Anvin [this message]
2002-02-06 21:15 ` Jakub Jelinek
2002-02-06 21:17 ` H. Peter Anvin
2002-02-06 20:21 ` yodaiken
2002-02-06 21:00 ` H. Peter Anvin
2002-02-06 21:31 ` Jakub Jelinek
2002-02-06 22:05 ` H. Peter Anvin
2002-02-06 22:20 ` Jakub Jelinek
2002-02-06 23:35 ` H. Peter Anvin
2002-02-07 0:21 ` Alan Cox
2002-02-07 0:12 ` Jakub Jelinek
2002-02-07 0:15 ` H. Peter Anvin
2002-02-07 0:13 ` H. Peter Anvin
2002-02-06 15:37 ` Alan Cox
[not found] <fa.kit1f7v.j024op@ifi.uio.no>
2001-12-07 7:24 ` Dan Maas
2001-12-07 9:00 ` Kiril Vidimce
2001-12-07 9:15 ` Alan Cox
2001-12-07 9:13 ` Kiril Vidimce
2001-12-07 9:28 ` Alan Cox
2001-12-07 9:26 ` James Davies
2001-12-07 9:43 ` Alan Cox
2001-12-07 13:10 ` James Davies
2001-12-07 13:41 ` Dave Jones
2001-12-07 13:59 ` James Davies
2001-12-07 13:53 ` Alan Cox
2001-12-07 9:45 ` Anton Altaparmakov
2001-12-07 10:38 ` Alan Cox
2002-02-06 16:58 ` Denis Vlasenko
2002-02-06 13:42 ` Alan Cox
2002-02-06 17:20 ` Christoph Hellwig
2001-12-07 10:12 ` Anton Altaparmakov
2001-12-07 5:40 Kiril Vidimce
2001-12-07 5:58 ` Jeffrey H. Ingber
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