Re: loopback blockdev deadlocks -- explained?

From: Tigran Aivazian (tigran@veritas.com)
Date: Tue Apr 18 2000 - 02:57:21 EST


On Tue, 18 Apr 2000, Mike Galbraith wrote:

> On Mon, 17 Apr 2000, Tigran Aivazian wrote:
>
> > On Mon, 17 Apr 2000, Stephen C. Tweedie wrote:
> >
> > > No, the last version I tried went fine but I haven't used it on a
> > > particularly recent 2.3 kernel.
> >
> > just to let everyone know - I tried the kdb-v1.1-2.3.48 from
> > SGI www.oss.sgi.com against 2.3.99-pre6-3 on SMP and it works just fine
> > (the modifications I had to make were trivial).
>
> Can you show me what mods you had to make to get it to work SMP?
> I merged kdb-1.1 into IKD and submitted a 2.3.99-pre6-3 diff to
> Andrea for review.. but don't have an SMP box.
>
> -Mike

yes, sure:

--- linux/arch/i386/kernel/smp.c Tue Apr 18 08:56:43 2000
+++ work/arch/i386/kernel/smp.c Mon Apr 17 21:44:59 2000
@@ -146,7 +146,7 @@
                 /*
                  * Setup KDB IPI to be delivered as an NMI
                  */
- cfg = (cfg&~APIC_DEST_DM_MASK)|APIC_DEST_DM_NMI;
+ cfg = (cfg&~APIC_DM_EXTINT)|APIC_DM_NMI;
         }
 #endif /* CONFIG_KDB */
 

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