Thomas,
Please consider this patchset for pulling from:
git://github.com/fweisbec/linux-dynticks.git
irq/core-v2
HEAD: 539b9cde35b473483c722de110133cd757015947
It fixes stacks overruns reported by Benjamin Herrenschmidt:
http://lkml.kernel.org/r/1378330796.4321.50.camel%40pasglop
And Paul Mackerras gave a feedback here:
http://lkml.kernel.org/r/20130918065101.GA22060@drongo
Of course the fix probably comes at the expense of a performance
hit due to cache switch, miss, etc... when softirq are processed
at the end of interrupts, although I haven't tried to measure that.
Thanks.
---
Frederic Weisbecker (3):
irq: Consolidate do_softirq() arch overriden implementations
irq: Execute softirq on its own stack on irq exit
irq: Comment on the use of inline stack for ksoftirqd
arch/metag/kernel/irq.c | 56 ++++++++++++++++++-------------------------
arch/parisc/kernel/irq.c | 17 ++-----------
arch/powerpc/kernel/irq.c | 17 +------------
arch/s390/kernel/irq.c | 52 ++++++++++++++++------------------------
arch/sh/kernel/irq.c | 60 +++++++++++++++++++---------------------------
arch/sparc/kernel/irq_64.c | 31 ++++++++----------------
arch/x86/kernel/irq_32.c | 34 ++++++++++----------------
arch/x86/kernel/irq_64.c | 18 +++-----------
include/linux/interrupt.h | 11 +++++++++
kernel/softirq.c | 13 +++++-----
10 files changed, 115 insertions(+), 194 deletions(-)
--
1.8.3.1
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