* announce: kgdb 1.5 with reworked buggy smp handling
@ 2002-03-29 10:31 Amit S. Kale
2002-03-29 10:59 ` Keith Owens
0 siblings, 1 reply; 4+ messages in thread
From: Amit S. Kale @ 2002-03-29 10:31 UTC (permalink / raw)
To: linux-kernel
Hi,
kgdb 1.5 at http://kgdb.sourceforge.net/
smp handling is completely reworked. Previous kgdb had a bug
which caused it to hang when a processor spun with
interrupts disabled and another processor enters kgdb. kgdb
now uses nmi watchdog for holding other processors while
a machine is in kgdb.
--
Amit S. Kale
Linux kernel source level debugger http://kgdb.sourceforge.net/
[29th March - kgdb-1.5 with reworked smp handling.]
Translation filesystem http://trfs.sourceforge.net/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: announce: kgdb 1.5 with reworked buggy smp handling
2002-03-29 10:31 announce: kgdb 1.5 with reworked buggy smp handling Amit S. Kale
@ 2002-03-29 10:59 ` Keith Owens
2002-03-29 15:03 ` Amit S. Kale
0 siblings, 1 reply; 4+ messages in thread
From: Keith Owens @ 2002-03-29 10:59 UTC (permalink / raw)
To: Amit S. Kale; +Cc: linux-kernel
On Fri, 29 Mar 2002 16:01:36 +0530,
"Amit S. Kale" <kgdb@vsnl.net> wrote:
>kgdb 1.5 at http://kgdb.sourceforge.net/
>
>smp handling is completely reworked. Previous kgdb had a bug
>which caused it to hang when a processor spun with
>interrupts disabled and another processor enters kgdb. kgdb
>now uses nmi watchdog for holding other processors while
>a machine is in kgdb.
IA64 disabled spin loops ignore NMI :(.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: announce: kgdb 1.5 with reworked buggy smp handling
2002-03-29 10:59 ` Keith Owens
@ 2002-03-29 15:03 ` Amit S. Kale
2002-03-30 0:17 ` Keith Owens
0 siblings, 1 reply; 4+ messages in thread
From: Amit S. Kale @ 2002-03-29 15:03 UTC (permalink / raw)
To: Keith Owens; +Cc: linux-kernel
Keith Owens wrote:
>
> On Fri, 29 Mar 2002 16:01:36 +0530,
> "Amit S. Kale" <kgdb@vsnl.net> wrote:
> >kgdb 1.5 at http://kgdb.sourceforge.net/
> >
> >smp handling is completely reworked. Previous kgdb had a bug
> >which caused it to hang when a processor spun with
> >interrupts disabled and another processor enters kgdb. kgdb
> >now uses nmi watchdog for holding other processors while
> >a machine is in kgdb.
>
> IA64 disabled spin loops ignore NMI :(.
Thanks for the info.
Isn't there any way get into an interrupt disabled spinning
processor on an ia64 smp machine?
--
Amit S. Kale
Linux kernel source level debugger http://kgdb.sourceforge.net/
[29th March - kgdb-1.5 with reworked smp handling.]
Translation filesystem http://trfs.sourceforge.net/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: announce: kgdb 1.5 with reworked buggy smp handling
2002-03-29 15:03 ` Amit S. Kale
@ 2002-03-30 0:17 ` Keith Owens
0 siblings, 0 replies; 4+ messages in thread
From: Keith Owens @ 2002-03-30 0:17 UTC (permalink / raw)
To: Amit S. Kale; +Cc: linux-kernel
On Fri, 29 Mar 2002 20:33:19 +0530,
"Amit S. Kale" <kgdb@vsnl.net> wrote:
>Keith Owens wrote:
>>
>> On Fri, 29 Mar 2002 16:01:36 +0530,
>> "Amit S. Kale" <kgdb@vsnl.net> wrote:
>> >kgdb 1.5 at http://kgdb.sourceforge.net/
>> >
>> >smp handling is completely reworked. Previous kgdb had a bug
>> >which caused it to hang when a processor spun with
>> >interrupts disabled and another processor enters kgdb. kgdb
>> >now uses nmi watchdog for holding other processors while
>> >a machine is in kgdb.
>>
>> IA64 disabled spin loops ignore NMI :(.
>
>Thanks for the info.
>
>Isn't there any way get into an interrupt disabled spinning
>processor on an ia64 smp machine?
Only via an INIT interrupt. But that is also used to initialise a cpu
at startup, INIT interrupts go through PAL and SAL and have side
effects. I don't use them for kdb, they are too heavy.
For more background, see the thread "Replacements for local_irq_xxx()"
https://external-lists.vasoftware.com/archives//linux-ia64/2001-May/thread.html
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2002-03-30 0:17 UTC | newest]
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2002-03-29 10:31 announce: kgdb 1.5 with reworked buggy smp handling Amit S. Kale
2002-03-29 10:59 ` Keith Owens
2002-03-29 15:03 ` Amit S. Kale
2002-03-30 0:17 ` Keith Owens
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