On Thu, Dec 20, 2018 at 01:40:35PM +0800, Peter Xu wrote: > Starting from QEMU 4.0, let's specify "split" as the default value for > kernel-irqchip. > > So for QEMU>=4.0 we'll have: allowed=Y,required=N,split=Y > for QEMU<=3.1 we'll have: allowed=Y,required=N,split=N > (omitting all the "kernel_irqchip_" prefix) > > Note that this will let the default q35 machine type to depend on > Linux version 4.4 or newer because that's where split irqchip is > introduced in kernel. But it's fine since we're boosting supported > Linux version for QEMU 4.0 to around Linux 4.5. For more information > please refer to the discussion on AMD's RDTSCP: > > https://lore.kernel.org/lkml/20181210181328.ga...@zn.tnic/ > > Signed-off-by: Peter Xu <pet...@redhat.com>
Reviewed-by: Eduardo Habkost <ehabk...@redhat.com> -- Eduardo
