on 01/04/2013 17:52 John Baldwin said the following:
Hmm, I think intr_table_lock used to be a spin lock at some point. I don't
remember
why we changed it to a regular mutex. It may be that there was a lock order
reason
for that. :(
I came up with the following patch:
On Saturday, March 23, 2013 5:48:50 am Andriy Gapon wrote:
Looks like this issue needs more thinking and discussing.
The basic idea is that suspend_cpus() must be called with smp_ipi_mtx held (on
SMP systems).
This is for exactly the same reasons as to why we first take smp_ipi_mtx
Looks like this issue needs more thinking and discussing.
The basic idea is that suspend_cpus() must be called with smp_ipi_mtx held (on
SMP systems).
This is for exactly the same reasons as to why we first take smp_ipi_mtx before
calling stop_cpus() in the shutdown path. Essentially one CPU
