* BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885
@ 2013-11-20 9:37 leroy christophe
2013-11-20 16:57 ` Scott Wood
0 siblings, 1 reply; 3+ messages in thread
From: leroy christophe @ 2013-11-20 9:37 UTC (permalink / raw)
To: Scott Wood; +Cc: LinuxPPC-dev, linux-kernel
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Scott,
The patch "Convert some mftb/mftbu into mfspr"
(beb2dc0a7a84be003ce54e98b95d65cc66e6e536
<https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/arch/powerpc/include/asm/reg.h?id=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
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^ permalink raw reply [flat|nested] 3+ messages in thread
* BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885
@ 2013-11-20 10:21 leroy christophe
0 siblings, 0 replies; 3+ messages in thread
From: leroy christophe @ 2013-11-20 10:21 UTC (permalink / raw)
To: Scott Wood; +Cc: LinuxPPC-dev, linux-kernel
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] 3+ messages in thread
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2013-11-20 9:37 BUG: Patch "Convert some mftb/mftbu into mfspr" breaks MPC885 leroy christophe
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2013-11-20 10:21 leroy christophe
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