Re: powerpc/watchdog: remove arch_trigger_cpumask_backtrace

2018-01-21 Thread Michael Ellerman
On Wed, 2018-01-17 at 12:47:22 UTC, Nicholas Piggin wrote: > The powerpc NMI IPIs may not be recoverable if they are taken in > some sections of code, and also there have been and still are issues > with taking NMIs (in KVM guest code, in firmware, etc) which makes them > a bit dangerous to use. >

[PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

2018-01-17 Thread Nicholas Piggin
The powerpc NMI IPIs may not be recoverable if they are taken in some sections of code, and also there have been and still are issues with taking NMIs (in KVM guest code, in firmware, etc) which makes them a bit dangerous to use. Generic code like softlockup detector and rcu stall detectors really