Am 14.09.2015 um 11:38 schrieb Wanpeng Li: > If there is already some polling ongoing, it's impossible to disable the > polling, since as soon as somebody sets halt_poll_ns to 0, polling will > never stop, as grow and shrink are only handled if halt_poll_ns is != 0. > > This patch fix it by reset vcpu->halt_poll_ns in order to stop polling > when polling is disabled. > > Reported-by: Christian Borntraeger <[email protected]> > Signed-off-by: Wanpeng Li <[email protected]> > --- > virt/kvm/kvm_main.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c > index 4662a88..f756cac0 100644 > --- a/virt/kvm/kvm_main.c > +++ b/virt/kvm/kvm_main.c > @@ -2012,7 +2012,8 @@ out: > else if (vcpu->halt_poll_ns < halt_poll_ns && > block_ns < halt_poll_ns) > grow_halt_poll_ns(vcpu); > - } > + } else > + vcpu->halt_poll_ns = 0; > > trace_kvm_vcpu_wakeup(block_ns, waited); > } >
Tested-by: Christian Borntraeger <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
