Re: [Qemu-devel] [PATCH v4 3/5] spapr: Implement H_CONFER

2019-07-16 Thread David Gibson
On Tue, Jul 16, 2019 at 08:25:28PM +1000, Nicholas Piggin wrote: > David Gibson's on July 16, 2019 6:25 pm: > > On Tue, Jul 16, 2019 at 12:47:24PM +1000, Nicholas Piggin wrote: > >> This does not do directed yielding and is not quite as strict as PAPR > >> specifies in terms of precise dispatch beh

Re: [Qemu-devel] [PATCH v4 3/5] spapr: Implement H_CONFER

2019-07-16 Thread Nicholas Piggin
David Gibson's on July 16, 2019 6:25 pm: > On Tue, Jul 16, 2019 at 12:47:24PM +1000, Nicholas Piggin wrote: >> This does not do directed yielding and is not quite as strict as PAPR >> specifies in terms of precise dispatch behaviour. This generally will >> mean suboptimal performance, rather than g

Re: [Qemu-devel] [PATCH v4 3/5] spapr: Implement H_CONFER

2019-07-16 Thread David Gibson
On Tue, Jul 16, 2019 at 12:47:24PM +1000, Nicholas Piggin wrote: > This does not do directed yielding and is not quite as strict as PAPR > specifies in terms of precise dispatch behaviour. This generally will > mean suboptimal performance, rather than guest misbehaviour. Linux > does not rely on ex

[Qemu-devel] [PATCH v4 3/5] spapr: Implement H_CONFER

2019-07-15 Thread Nicholas Piggin
This does not do directed yielding and is not quite as strict as PAPR specifies in terms of precise dispatch behaviour. This generally will mean suboptimal performance, rather than guest misbehaviour. Linux does not rely on exact dispatch behaviour. Signed-off-by: Nicholas Piggin --- hw/ppc/spap