Quoting Sebastian Capella (2014-03-05 02:50:04)
Use of tracers in local_irq_disable is causes recursive aborts when called with irqs disabled and using a temporary stack (hibernation). Replace local_irq_disable with raw_local_irq_disable instead to avoid tracers.
Signed-off-by: Sebastian Capella sebastian.capella@linaro.org Cc: Russell King linux@arm.linux.org.uk Cc: Andrew Morton akpm@linux-foundation.org Cc: Thomas Gleixner tglx@linutronix.de Cc: Will Deacon will.deacon@arm.com Cc: Robin Holt robin.m.holt@gmail.com Cc: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Cc: Konstantin Khlebnikov k.khlebnikov@samsung.com Cc: Steven Capper steve.capper@linaro.org Cc: Stephen Warren swarren@nvidia.com Cc: Tejun Heo tj@kernel.org
arch/arm/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 92f7b15..f58b723 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -100,7 +100,7 @@ void soft_restart(unsigned long addr) u64 *stack = soft_restart_stack + ARRAY_SIZE(soft_restart_stack); /* Disable interrupts first */
local_irq_disable();
raw_local_irq_disable(); local_fiq_disable();/* Disable the L2 if we're the last man standing. */ -- 1.7.9.5
Hi,
I have not heard any feedback on this change, since V3 of the patchset.
Is everyone ok with this as it is?
Thomas, thanks for proposing this, is this looking ok to you?
Thanks!
Sebastian