Re: [PATCH 1/2] powerpc/kvm: Convert openpic lock to raw_spinlock

2015-02-23 Thread Scott Wood
On Wed, 2015-02-18 at 09:32 +, Bogdan Purcareata wrote: > This patch enables running intensive I/O workloads, e.g. netperf, in a guest > deployed on a RT host. It also enable guests to be SMP. > > The openpic spinlock becomes a sleeping mutex on a RT system. This no longer > guarantees that EP

[PATCH 1/2] powerpc/kvm: Convert openpic lock to raw_spinlock

2015-02-18 Thread Bogdan Purcareata
This patch enables running intensive I/O workloads, e.g. netperf, in a guest deployed on a RT host. It also enable guests to be SMP. The openpic spinlock becomes a sleeping mutex on a RT system. This no longer guarantees that EPR is atomic with exception delivery. The guest VCPU thread fails due t