Re: [PATCH] ppc: fix idle with interrupts disabled

From: Brian Waite
Date: Thu Jan 13 2005 - 16:10:55 EST


On Wed, 12 Jan 2005 01:41:19 +0000, Linux Kernel Mailing List
<linux-kernel@xxxxxxxxxxxxxxx> wrote:
> ChangeSet 1.2369, 2005/01/11 17:41:19-08:00, tglx@xxxxxxxxxxxxx
>
> [PATCH] ppc: fix idle with interrupts disabled
>
> The idle-thread-preemption-fix.patch in mm1/2 leads to a stalled box on PPC
> machines which do not provide a powersave function and therefor poll the
> idle loop with interrupts disabled. The patch reenables interrupts.
There is still a stall with PPC boxes that have powersave enabled. I
use a 74xx based board and unless I disable powersave
(ppc_md.power_save=NULL), I get a stall at:
NET: Registered protocol family 2

Reverting default_idle to prepatch form I still see the hang. I think
it is somewhere else in the patchset. Still looking....

Thanks
Brian
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