"Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote: > With this flag, kvm allows guest to control host CPU power state. This > increases latency for other processes using same host CPU in an > unpredictable way, but if decreases idle entry/exit times for the > running VCPU, so to use it QEMU needs a hint about whether host CPU is > overcommitted, hence the flag name. > > Follow-up patches will expose this capability to guest > (using mwait leaf). > > Based on a patch by Wanpeng Li <kernellwp@xxxxxxxxx> . > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> [...] > diff --git a/migration/migration.c b/migration/migration.c > index 1e99ec9b7e..e468b50c4f 100644 > --- a/migration/migration.c > +++ b/migration/migration.c > @@ -45,6 +45,7 @@ > #include "migration/colo.h" > #include "hw/boards.h" > #include "monitor/monitor.h" > +#include "qemu/ptr_ring.h" > > #define MAX_THROTTLE (32 << 20) /* Migration transfer speed throttling */ > Why is this chuck needed? I can't see a reason. Thanks, Juan.
