tree 07640ab193a4a0cd3750f04db03e04ad6ffe66c9
parent 489153c746746fc44b1e2fd184248dee8aebbaff
author Rik van Riel <riel@redhat.com> 1458569607 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1458661118 +0100

kvm, rt: change async pagefault code locking for PREEMPT_RT

The async pagefault wake code can run from the idle task in exception
context, so everything here needs to be made non-preemptible.

Conversion to a simple wait queue and raw spinlock does the trick.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>