From: Ralf Baechle <ralf@oss.sgi.com>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Cc: linux-mips@oss.sgi.com
Subject: Re: CVS Update@oss.sgi.com: linux
Date: Wed, 3 Oct 2001 19:50:59 +0200 [thread overview]
Message-ID: <20011003195059.A28205@dea.linux-mips.net> (raw)
In-Reply-To: <Pine.GSO.3.96.1011003125730.15867A-100000@delta.ds2.pg.gda.pl>; from macro@ds2.pg.gda.pl on Wed, Oct 03, 2001 at 01:02:56PM +0200
On Wed, Oct 03, 2001 at 01:02:56PM +0200, Maciej W. Rozycki wrote:
> > Modified files:
> > arch/mips/kernel: scall_o32.S sysmips.c
> >
> > Log message:
> > Barf.
>
> The new mips_atomic_set() doesn't mask interrupts in the non-ll/sc case.
> Thus it may fail to keep coherency. Is it intentional?
Yes. Assuming do_page_fault did it's job successfully the address which
has been passed as argument to sysmips() is now writable and thus we
won't take any pagefaults.
There are two remaining failure scenarios which probably are't very
interesting for practical usage. It's when an interrupt is accessing
the same address. This could be fixed by disabling interrupts.
The other case is missaligned words.
> Also the bad_stack exit point for the ll/sc case looks suspicient to me.
Indeed, the symbol deserves a better name. Cut'n'paste happens ;-)
Ralf
next parent reply other threads:[~2001-10-03 17:52 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200109300029.f8U0TZv12410@oss.sgi.com>
[not found] ` <Pine.GSO.3.96.1011003125730.15867A-100000@delta.ds2.pg.gda.pl>
2001-10-03 17:50 ` Ralf Baechle [this message]
2001-10-03 21:13 ` CVS Update@oss.sgi.com: linux Jun Sun
2001-10-03 21:27 ` Ralf Baechle
[not found] <200208230950.g7N9o0fq016617@oss.sgi.com>
2002-08-23 10:13 ` Jan-Benedict Glaw
2002-08-23 10:41 ` Maciej W. Rozycki
[not found] <200208130138.g7D1cYk3010974@oss.sgi.com>
2002-08-19 12:35 ` Maciej W. Rozycki
2002-08-19 12:57 ` Alan Cox
2002-08-19 13:22 ` Maciej W. Rozycki
2002-08-19 13:56 ` Alan Cox
2002-08-19 13:42 ` Ralf Baechle
2002-08-20 14:10 ` Maciej W. Rozycki
[not found] <200208151925.g7FJPbfD009802@oss.sgi.com>
[not found] ` <20020815193340.GB10730@lug-owl.de>
2002-08-15 19:46 ` Ralf Baechle
2002-08-19 12:32 ` Maciej W. Rozycki
[not found] <200206301157.g5UBvrwF019470@oss.sgi.com>
2002-07-01 19:15 ` Guido Guenther
[not found] <200202022138.g12LcZU24388@oss.sgi.com>
[not found] ` <Pine.GSO.3.96.1020203191613.20409B-100000@delta.ds2.pg.gda.pl>
2002-02-03 18:37 ` Ralf Baechle
2002-02-04 11:32 ` Maciej W. Rozycki
2002-02-04 19:03 ` Jun Sun
[not found] <200112171934.fBHJYx328839@oss.sgi.com>
[not found] ` <Pine.GSO.4.21.0112181044300.15364-100000@vervain.sonytel.be>
2001-12-19 2:30 ` Ralf Baechle
[not found] <200111180324.fAI3Ob928062@oss.sgi.com>
[not found] ` <20011118092625.B23198@lug-owl.de>
[not found] ` <001801c17019$56f562a0$0deca8c0@Ulysses>
2001-11-21 23:25 ` Ralf Baechle
2001-11-21 23:36 ` Matthew Dharm
2001-11-21 23:36 ` Matthew Dharm
2001-11-22 8:56 ` Jan-Benedict Glaw
2001-11-22 10:18 ` Geert Uytterhoeven
[not found] <200111060055.fA60tX331454@oss.sgi.com>
2001-11-06 1:46 ` Florian Lohoff
[not found] <200104102242.f3AMgmc19116@oss.sgi.com>
2001-04-11 7:35 ` Ralf Baechle
2001-04-11 18:00 ` Kanoj Sarcar
2001-04-11 18:00 ` Kanoj Sarcar
2001-04-16 17:43 ` Quinn Jensen
2001-04-16 17:43 ` Quinn Jensen
2001-04-17 17:12 ` Ralf Baechle
[not found] <20001118132233Z553804-494+838@oss.sgi.com>
[not found] ` <XFMail.001118180639.Harald.Koerfgen@home.ivm.de>
2000-11-18 17:21 ` Ralf Baechle
2000-11-18 18:13 ` Justin Carlson
2000-11-18 18:36 ` Kevin D. Kissell
2000-11-18 18:36 ` Kevin D. Kissell
2000-11-19 15:16 ` Dominic Sweetman
2000-11-21 3:39 ` Ralf Baechle
[not found] <20000906233636Z42230-31375+649@oss.sgi.com>
2000-09-06 23:45 ` Ralf Baechle
2000-09-06 23:51 ` Kanoj Sarcar
2000-09-06 23:51 ` Kanoj Sarcar
2000-09-07 0:02 ` Ralf Baechle
2000-09-07 0:05 ` Kanoj Sarcar
2000-09-07 0:05 ` Kanoj Sarcar
2000-09-07 0:26 ` Ralf Baechle
[not found] <20000823172400Z42326-31375+197@oss.sgi.com>
2000-08-23 19:56 ` Ralf Baechle
2000-08-23 23:12 ` Kanoj Sarcar
2000-08-23 23:12 ` Kanoj Sarcar
[not found] <20000702193011Z42202-29274+369@oss.sgi.com>
[not found] ` <XFMail.000704192753.Harald.Koerfgen@home.ivm.de>
2000-07-04 21:22 ` Ralf Baechle
2000-07-05 18:24 ` Harald Koerfgen
[not found] <20000524012413.A5507@spock>
2000-05-24 16:50 ` Harald Koerfgen
2000-05-24 23:58 ` Ralf Baechle
2000-05-25 17:14 ` Harald Koerfgen
2000-05-25 17:19 ` Ulf Carlsson
2000-05-25 18:00 ` Ralf Baechle
2000-05-25 18:02 ` Ulf Carlsson
2000-05-25 18:17 ` Ralf Baechle
[not found] <20000519083237Z305155-391+603@oss.sgi.com>
2000-05-19 11:18 ` Ralf Baechle
[not found] <20000327210518Z305163-3992+178@oss.sgi.com>
2000-03-28 0:29 ` Ralf Baechle
[not found] <20000219003324Z305163-11638+186@oss.sgi.com>
[not found] ` <Pine.GSO.4.10.10002211054270.29481-100000@dandelion.sonytel.be>
2000-02-21 11:58 ` Ralf Baechle
[not found] ` <Pine.GSO.4.10.10002211634260.4234-100000@dandelion.sonytel.be>
2000-02-21 18:03 ` Ralf Baechle
2000-02-22 2:45 ` Geert Uytterhoeven
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