Priyanka Jain f7b3367774 powerpc/32bit:Store temporary result in r0 instead of r8 ... Commit a9c4e541ea "powerpc/kprobe: Complete kprobe and migrate exception frame" introduced a regression: While returning from exception handling in case of PREEMPT enabled, _TIF_NEED_RESCHED bit is checked in TI_FLAGS (thread_info flag) of current task. Only if this bit is set, it should continue with the process of calling preempt_schedule_irq() to schedule highest priority task if available. Current code assumes that r8 contains TI_FLAGS and check this for _TIF_NEED_RESCHED, but as r8 is modified in the code which executes before this check, r8 no longer contains the expected TI_FLAGS information. As a result check for comparison with _TIF_NEED_RESCHED was failing even if NEED_RESCHED bit is set in the current thread_info flag. Due to this, preempt_schedule_irq() and in turn scheduler was not getting called even if highest priority task is ready for execution. So, store temporary results in r0 instead of r8 to prevent r8 from getting modified as subsequent code is dependent on its value. Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> CC: <stable@vger.kernel.org> [v3.7+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2013-06-01 08:29:27 +10:00
..
boot	MMC highlights for 3.10:	2013-05-04 13:45:17 -07:00
configs	USB: remove remaining instances of USB_SUSPEND	2013-05-15 13:44:44 -04:00
crypto	powerpc: Fix compile of sha1-powerpc-asm.S on 32-bit	2013-03-05 16:56:26 +11:00
include	powerpc/pseries: Kill all prefetch streams on context switch	2013-06-01 08:29:25 +10:00
kernel	powerpc/32bit:Store temporary result in r0 instead of r8	2013-06-01 08:29:27 +10:00
kvm	Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2013-05-05 14:47:31 -07:00
lib	powerpc/pseries: Improve stream generation comments in copypage/user	2013-06-01 08:29:26 +10:00
math-emu
mm	powerpc/mm: Always invalidate tlb on hpte invalidate and update	2013-06-01 08:29:26 +10:00
net	filter: bpf_jit_comp: refactor and unify BPF JIT image dump output	2013-03-21 17:25:56 -04:00
oprofile	Merge branch 'merge' into next	2013-01-29 11:33:37 +11:00
perf	powerpc/perf: Fix setting of "to" addresses for BHRB	2013-05-14 16:00:22 +10:00
platforms	powerpc/pseries: Make 32-bit MSI quirk work on systems lacking firmware support	2013-05-24 18:16:54 +10:00
sysdev	powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPU	2013-06-01 08:29:24 +10:00
xmon	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
Kconfig	Removal of GENERIC_GPIO for v3.10	2013-05-09 09:59:16 -07:00
Kconfig.debug	powerpc: Add an in memory udbg console	2013-05-08 06:36:49 +10:00
Makefile	powerpc: Avoid load of static chain register when calling nested functions through a pointer on 64bit	2013-01-10 17:01:27 +11:00
relocs_check.pl