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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-02-22 06:48:32 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-02-22 06:48:53 +0100 |
| commit | 18b246fa60dd4bfc71c78d669e2ffaa5df454d6a (patch) | |
| tree | ea9d8fecb9f83b4223032ffd9eb15a2d5bdbf335 /arch/powerpc/kernel/entry_64.S | |
| parent | cpuidle: Default y on powerpc pSeries (diff) | |
| download | linux-18b246fa60dd4bfc71c78d669e2ffaa5df454d6a.tar.xz linux-18b246fa60dd4bfc71c78d669e2ffaa5df454d6a.zip | |
powerpc: Fix various issues with return to userspace
We have a few problems when returning to userspace. This is a
quick set of fixes for 3.3, I'll look into a more comprehensive
rework for 3.4. This fixes:
- We kept interrupts soft-disabled when schedule'ing or calling
do_signal when returning to userspace as a result of a hardware
interrupt.
- Rename do_signal to do_notify_resume like all other archs (and
do_signal_pending back to do_signal, which it was before Roland
changed it).
- Add the missing call to key_replace_session_keyring() to
do_notify_resume().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index d834425186ae..866462cbe2d8 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -751,12 +751,16 @@ user_work: andi. r0,r4,_TIF_NEED_RESCHED beq 1f + li r5,1 + TRACE_AND_RESTORE_IRQ(r5); bl .schedule b .ret_from_except_lite 1: bl .save_nvgprs + li r5,1 + TRACE_AND_RESTORE_IRQ(r5); addi r3,r1,STACK_FRAME_OVERHEAD - bl .do_signal + bl .do_notify_resume b .ret_from_except unrecov_restore: |