[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen: introduce HVM_PARAM_BUFIOREQ_EVTCHN
On Tue, 15 Nov 2011, Keir Fraser wrote: > On 15/11/2011 13:53, "Stefano Stabellini" <Stefano.Stabellini@xxxxxxxxxxxxx> > wrote: > > > From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> > > > > Introduce an event channel for buffered io event notifications, > > advertise the port number using an hvm param. > > This way the device model is not forced to check the buffered io page > > for data several times a second for the entire life of the VM (buffered > > io is mostly used for stdvga emulation in Xen that is switched off after > > the guest goes into graphical mode). > > It doesn't look like this evtchn can be allocated and specified from outside > the hypervisor. Hence HVMOP_set_param(BUFIOREQ_EVTCHN) should fail with > -EINVAL or similar. Yes, good idea. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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