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powerpc: Fix various issues with return to userspace

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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>
---
This commit is contained in:
Benjamin Herrenschmidt
2012-02-22 16:48:32 +11:00
parent aa491ad3d4
commit 18b246fa60
4 changed files with 15 additions and 7 deletions
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2
arch/powerpc/kernel/signal.h
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@@ -12,7 +12,7 @@
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
extern void do_signal(struct pt_regs *regs, unsigned long thread_info_flags);
extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags);
extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size, int is_32);