* BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885
@ 2013-11-20 10:21 leroy christophe
0 siblings, 0 replies; 2+ messages in thread
From: leroy christophe @ 2013-11-20 10:21 UTC (permalink / raw)
To: Scott Wood; +Cc: LinuxPPC-dev, linux-kernel, Joakim Tjernlund
Scott,
The patch "Convert some mftb/mftbu into mfspr"
(beb2dc0a7a84be003ce54e98b95d65cc66e6e536) breaks startup on MPC885.
The CPU traps (SoftwareEmulation trap) at sched_clock() when trying to
read TBU with mfspr.
Reverting the patch solves the issue.
What's the prefered way to fix this ?
Christophe
^ permalink raw reply [flat|nested] 2+ messages in thread
[parent not found: <528C82D1.4090803@c-s.fr>]
* Re: BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885
[not found] <528C82D1.4090803@c-s.fr>
@ 2013-11-20 16:57 ` Scott Wood
0 siblings, 0 replies; 2+ messages in thread
From: Scott Wood @ 2013-11-20 16:57 UTC (permalink / raw)
To: leroy christophe; +Cc: LinuxPPC-dev, linux-kernel, Joakim Tjernlund
On Wed, 2013-11-20 at 10:37 +0100, leroy christophe wrote:
> Scott,
>
> The patch "Convert some mftb/mftbu into
> mfspr" (beb2dc0a7a84be003ce54e98b95d65cc66e6e536) breaks startup on
> MPC885.
>
> The CPU traps (SoftwareEmulation trap) at sched_clock() when trying to
> read TBU with mfspr.
>
> Reverting the patch solves the issue.
>
> What's the prefered way to fix this ?
I guess we need to add an ifdef.
-Scott
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-11-20 10:21 BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885 leroy christophe
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2013-11-20 16:57 ` Scott Wood
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