Re: [Qemu-devel] [PATCH v3 2/2] virtio: improve virtio devices initialization time

2018-02-08 Thread Michael S. Tsirkin
On Mon, Jan 29, 2018 at 04:20:57PM +0200, Gal Hammer wrote: > The loading time of a VM is quite significant when its virtio > devices use a large amount of virt-queues (e.g. a virtio-serial > device with max_ports=511). Most of the time is spend in the > creation of all the required event notifiers

[Qemu-devel] [PATCH v3 2/2] virtio: improve virtio devices initialization time

2018-01-29 Thread Gal Hammer
The loading time of a VM is quite significant when its virtio devices use a large amount of virt-queues (e.g. a virtio-serial device with max_ports=511). Most of the time is spend in the creation of all the required event notifiers (ioeventfd and memory regions). This patch pack all the changes to