tree 10b3e9ef283d0f507112ed6efb8dcac987f1beb4
parent 57d3ee522717d3402786043ba8f11851597ed0db
author Michael S. Tsirkin <mst@redhat.com> 1334144664 +0300
committer Michael S. Tsirkin <mst@redhat.com> 1335970306 +0300

kvm: remove an atomic on EOI

TMR is set with IRR but does not need to be
cleared on EOI. So we can save an atomic
operation on EOI by checking whether ioapic
needs a specific vector first.

For consistency, don't clear TMR for handled
vectors either: the spec doesn't say that
it needs to be cleared on EOI.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>