On Mon, 2007-10-15 at 18:47 +0200, Avi Kivity wrote: > Hollis Blanchard wrote: > >> > >> I'd think there is no reason for virtual timer to be PIT like, which > >> is mostly due to historic reason. > >> > >> If we need to make it close to native timer device, HPET is much > >> better than PIT for virtual time to look like. > >> > > > > Fine, so why do we need PV time when we can emulate the HPET? > > > > A pv timebase can require zero exits while any emulated timebase will > require at least one.
That's a good point, but does PIT/HPET emulation show up as a hot spot in any profiles? I think keeping the hypercall API as small as feasible is a desirable design goal. -- Hollis Blanchard IBM Linux Technology Center ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
