[POWERPC] Rework EXC_LEVEL_EXCEPTION_PROLOG code

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* Cleanup the code a bit my allocating an INT_FRAME on our exception
  stack there by make references go from GPR11-INT_FRAME_SIZE(r8) to
  just GPR11(r8)
* simplify {lvl}_transfer_to_handler code by moving the copying of the
  temp registers we use if we come from user space into the PROLOG
* If the exception came from kernel mode copy thread_info flags,
  preempt, and task pointer from the process thread_info.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>

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This commit is contained in:

Kumar Gala 2008-04-30 04:17:22 -05:00

parent bcf0b08807

commit 369e757b65

2 changed files with 35 additions and 32 deletions

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13

arch/powerpc/kernel/entry_32.S

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54

arch/powerpc/kernel/head_booke.h

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