Re: [Xen-devel] HVMlite gains

2016-03-16 Thread Andrew Cooper
On 16/03/16 03:18, Andy Lutomirski wrote: > On Mar 15, 2016 3:05 PM, "Andrew Cooper" wrote: >> On 15/03/2016 21:52, Andy Lutomirski wrote: >>> On Tue, Mar 15, 2016 at 2:50 PM, Andrew Cooper >>> wrote: On 15/03/2016 21:36, Andy Lutomirski wrote: >>> e) Can timing use RDTSC? >> I don

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andy Lutomirski
On Mar 15, 2016 3:05 PM, "Andrew Cooper" wrote: > > On 15/03/2016 21:52, Andy Lutomirski wrote: > > On Tue, Mar 15, 2016 at 2:50 PM, Andrew Cooper > > wrote: > >> On 15/03/2016 21:36, Andy Lutomirski wrote: > > e) Can timing use RDTSC? > I don't understand this question in the context

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Konrad Rzeszutek Wilk
On Tue, Mar 15, 2016 at 02:14:15PM -0700, Luis R. Rodriguez wrote: > While discussing HVMLite with a few people a few questions have come > up. Since I only really understand a few possible gains with the > current design I wanted to get clarificaiton on a few which I simply Just think of baremeta

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andrew Cooper
On 15/03/2016 21:52, Andy Lutomirski wrote: > On Tue, Mar 15, 2016 at 2:50 PM, Andrew Cooper > wrote: >> On 15/03/2016 21:36, Andy Lutomirski wrote: > e) Can timing use RDTSC? I don't understand this question in the context of the others. RDTSC has (as far as I can tell) always be

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andy Lutomirski
On Tue, Mar 15, 2016 at 2:50 PM, Andrew Cooper wrote: > On 15/03/2016 21:36, Andy Lutomirski wrote: >> e) Can timing use RDTSC? >>> I don't understand this question in the context of the others. RDTSC >>> has (as far as I can tell) always been advertised and available for >>> guest use. R

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Boris Ostrovsky
On 03/15/2016 05:36 PM, Andy Lutomirski wrote: On Tue, Mar 15, 2016 at 2:29 PM, Andrew Cooper wrote: On 15/03/2016 21:14, Luis R. Rodriguez wrote: While discussing HVMLite with a few people a few questions have come up. Since I only really understand a few possible gains with the current desig

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andrew Cooper
On 15/03/2016 21:36, Andy Lutomirski wrote: > >>> e) Can timing use RDTSC? >> I don't understand this question in the context of the others. RDTSC >> has (as far as I can tell) always been advertised and available for >> guest use. RDTSCP is a different matter, and I have half-fixed that >> bro

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andy Lutomirski
On Tue, Mar 15, 2016 at 2:29 PM, Andrew Cooper wrote: > On 15/03/2016 21:14, Luis R. Rodriguez wrote: >> While discussing HVMLite with a few people a few questions have come >> up. Since I only really understand a few possible gains with the >> current design I wanted to get clarificaiton on a few

Re: [Xen-devel] HVMlite gains

2016-03-15 Thread Andrew Cooper
On 15/03/2016 21:14, Luis R. Rodriguez wrote: > While discussing HVMLite with a few people a few questions have come > up. Since I only really understand a few possible gains with the > current design I wanted to get clarificaiton on a few which I simply > have no clue if we stand to gain from them